forked from AuroraMiddleware/gtk
3557 lines
87 KiB
C
3557 lines
87 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <ctype.h>
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#include <string.h>
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#include "gdk/gdkkeysyms.h"
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#include "gtkmain.h"
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#include "gtksignal.h"
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#include "gtktext.h"
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#include "line-wrap.xbm"
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#include "line-arrow.xbm"
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#define INITIAL_BUFFER_SIZE 1024
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#define INITIAL_LINE_CACHE_SIZE 256
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#define MIN_GAP_SIZE 256
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#define LINE_DELIM '\n'
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#define MIN_TEXT_WIDTH_LINES 20
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#define MIN_TEXT_HEIGHT_LINES 10
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#define TEXT_BORDER_ROOM 3
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#define LINE_WRAP_ROOM 8 /* The bitmaps are 6 wide. */
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#define DEFAULT_TAB_STOP_WIDTH 4
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#define SCROLL_PIXELS 5
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#define KEY_SCROLL_PIXELS 10
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#define SET_PROPERTY_MARK(m, p, o) do { \
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(m)->property = (p); \
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(m)->offset = (o); \
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} while (0)
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#define MARK_CURRENT_PROPERTY(mark) ((TextProperty*)(mark)->property->data)
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#define MARK_NEXT_PROPERTY(mark) ((TextProperty*)(mark)->property->next->data)
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#define MARK_PREV_PROPERTY(mark) ((TextProperty*)((mark)->property->prev ? \
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(mark)->property->prev->data \
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: NULL))
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#define MARK_PREV_LIST_PTR(mark) ((mark)->property->prev)
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#define MARK_LIST_PTR(mark) ((mark)->property)
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#define MARK_NEXT_LIST_PTR(mark) ((mark)->property->next)
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#define MARK_OFFSET(mark) ((mark)->offset)
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#define MARK_PROPERTY_LENGTH(mark) (MARK_CURRENT_PROPERTY(mark)->length)
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#define MARK_CURRENT_FONT(mark) (((TextProperty*)(mark)->property->data)->font->gdk_font)
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#define MARK_CURRENT_FORE(mark) (((TextProperty*)(mark)->property->data)->fore_color)
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#define MARK_CURRENT_BACK(mark) (((TextProperty*)(mark)->property->data)->back_color)
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#define MARK_CURRENT_TEXT_FONT(m) (((TextProperty*)(m)->property->data)->font)
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#define TEXT_INDEX(t, index) ((index) < (t)->gap_position ? (t)->text[index] : \
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(t)->text[(index) + (t)->gap_size])
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#define TEXT_LENGTH(t) ((t)->text_end - (t)->gap_size)
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#define FONT_HEIGHT(f) ((f)->ascent + (f)->descent)
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#define LINE_HEIGHT(l) ((l).font_ascent + (l).font_descent)
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#define LINE_CONTAINS(l, i) ((l).start.index <= (i) && (l).end.index >= (i))
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#define LINE_STARTS_AT(l, i) ((l).start.index == (i))
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#define LINE_START_PIXEL(l) ((l).tab_cont.pixel_offset)
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#define LAST_INDEX(t, m) ((m).index == TEXT_LENGTH(t))
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#define CACHE_DATA(c) (*(LineParams*)(c)->data)
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typedef struct _TextFont TextFont;
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typedef struct _TextProperty TextProperty;
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typedef struct _TabStopMark TabStopMark;
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typedef struct _PrevTabCont PrevTabCont;
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typedef struct _FetchLinesData FetchLinesData;
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typedef struct _LineParams LineParams;
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typedef struct _SetVerticalScrollData SetVerticalScrollData;
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typedef gint (*LineIteratorFunction) (GtkText* text, LineParams* lp, void* data);
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typedef enum
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{
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FetchLinesPixels,
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FetchLinesCount
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} FLType;
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struct _SetVerticalScrollData {
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gint pixel_height;
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gint last_didnt_wrap;
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gint last_line_start;
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GtkPropertyMark mark;
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};
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struct _TextFont
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{
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/* The actual font. */
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GdkFont *gdk_font;
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gint16 char_widths[256];
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};
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struct _TextProperty
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{
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/* Font. */
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TextFont* font;
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/* Background Color. */
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GdkColor* back_color;
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/* Foreground Color. */
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GdkColor* fore_color;
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/* Length of this property. */
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guint length;
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};
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struct _TabStopMark
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{
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GList* tab_stops; /* Index into list containing the next tab position. If
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* NULL, using default widths. */
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gint to_next_tab;
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};
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struct _PrevTabCont
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{
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guint pixel_offset;
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TabStopMark tab_start;
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};
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struct _FetchLinesData
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{
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GList* new_lines;
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FLType fl_type;
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gint data;
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gint data_max;
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};
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struct _LineParams
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{
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guint font_ascent;
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guint font_descent;
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guint pixel_width;
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guint displayable_chars;
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guint wraps : 1;
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PrevTabCont tab_cont;
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PrevTabCont tab_cont_next;
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GtkPropertyMark start;
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GtkPropertyMark end;
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};
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static void gtk_text_class_init (GtkTextClass *klass);
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static void gtk_text_init (GtkText *text);
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static void gtk_text_destroy (GtkObject *object);
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static void gtk_text_realize (GtkWidget *widget);
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static void gtk_text_unrealize (GtkWidget *widget);
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static void gtk_text_draw_focus (GtkWidget *widget);
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static void gtk_text_size_request (GtkWidget *widget,
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GtkRequisition *requisition);
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static void gtk_text_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation);
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static void gtk_text_adjustment (GtkAdjustment *adjustment,
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GtkText *text);
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static void gtk_text_disconnect (GtkAdjustment *adjustment,
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GtkText *text);
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/* Event handlers */
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static void gtk_text_draw (GtkWidget *widget,
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GdkRectangle *area);
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static gint gtk_text_expose (GtkWidget *widget,
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GdkEventExpose *event);
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static gint gtk_text_button_press (GtkWidget *widget,
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GdkEventButton *event);
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static gint gtk_text_button_release (GtkWidget *widget,
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GdkEventButton *event);
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static gint gtk_text_motion_notify (GtkWidget *widget,
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GdkEventMotion *event);
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static gint gtk_text_key_press (GtkWidget *widget,
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GdkEventKey *event);
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static gint gtk_text_focus_in (GtkWidget *widget,
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GdkEventFocus *event);
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static gint gtk_text_focus_out (GtkWidget *widget,
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GdkEventFocus *event);
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static gint gtk_text_selection_clear (GtkWidget *widget,
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GdkEventSelection *event);
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static gint gtk_text_selection_request (GtkWidget *widget,
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GdkEventSelection *event);
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static gint gtk_text_selection_notify (GtkWidget *widget,
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GdkEventSelection *event);
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static void move_gap_to_point (GtkText* text);
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static void make_forward_space (GtkText* text, guint len);
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static void insert_text_property (GtkText* text, GdkFont* font,
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GdkColor *fore, GdkColor* back, guint len);
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static void delete_text_property (GtkText* text, guint len);
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static void init_properties (GtkText *text);
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static guint pixel_height_of (GtkText* text, GList* cache_line);
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/* Property Movement and Size Computations */
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static void advance_mark (GtkPropertyMark* mark);
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static void decrement_mark (GtkPropertyMark* mark);
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static void advance_mark_n (GtkPropertyMark* mark, gint n);
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static void decrement_mark_n (GtkPropertyMark* mark, gint n);
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static void move_mark_n (GtkPropertyMark* mark, gint n);
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static GtkPropertyMark find_mark (GtkText* text, guint mark_position);
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static GtkPropertyMark find_mark_near (GtkText* text, guint mark_position, const GtkPropertyMark* near);
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static void find_line_containing_point (GtkText* text, guint point);
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static TextProperty* new_text_property (GdkFont* font, GdkColor* fore, GdkColor* back, guint length);
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/* Display */
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static gint total_line_height (GtkText* text,
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GList* line,
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gint line_count);
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static LineParams find_line_params (GtkText* text,
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const GtkPropertyMark *mark,
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const PrevTabCont *tab_cont,
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PrevTabCont *next_cont);
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static void recompute_geometry (GtkText* text);
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static void insert_char_line_expose (GtkText* text, gchar key, guint old_pixels);
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static void delete_char_line_expose (GtkText* text, gchar key, guint old_pixels);
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static void clear_area (GtkText *text, GdkRectangle *area);
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static void draw_line (GtkText* text,
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gint pixel_height,
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LineParams* lp);
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static void draw_line_wrap (GtkText* text,
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guint height);
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static void draw_cursor (GtkText* text, gint absolute);
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static void undraw_cursor (GtkText* text, gint absolute);
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static gint drawn_cursor_min (GtkText* text);
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static gint drawn_cursor_max (GtkText* text);
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static void expose_text (GtkText* text, GdkRectangle *area, gboolean cursor);
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/* Search and Placement. */
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static void find_cursor (GtkText* text);
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static void find_cursor_at_line (GtkText* text,
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const LineParams* start_line,
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gint pixel_height);
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static void mouse_click_1 (GtkText* text, GdkEventButton *event);
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/* Scrolling. */
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static void adjust_adj (GtkText* text, GtkAdjustment* adj);
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static void scroll_up (GtkText* text, gint diff);
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static void scroll_down (GtkText* text, gint diff);
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static void scroll_int (GtkText* text, gint diff);
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static void process_exposes (GtkText *text);
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/* Cache Management. */
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static GList* remove_cache_line (GtkText* text, GList* list);
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/* Key Motion. */
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static void move_cursor_buffer_ver (GtkText *text, int dir);
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static void move_cursor_page_ver (GtkText *text, int dir);
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static void move_cursor_ver (GtkText *text, int count);
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static void move_cursor_hor (GtkText *text, int count);
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/*#define DEBUG_GTK_TEXT*/
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#if defined(DEBUG_GTK_TEXT) && defined(__GNUC__)
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/* Debugging utilities. */
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static void gtk_text_assert_mark (GtkText *text,
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GtkPropertyMark *mark,
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GtkPropertyMark *before,
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GtkPropertyMark *after,
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const gchar *msg,
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const gchar *where,
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gint line);
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static void gtk_text_assert (GtkText *text,
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const gchar *msg,
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gint line);
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static void gtk_text_show_cache_line (GtkText *text, GList *cache,
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const char* what, const char* func, gint line);
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static void gtk_text_show_cache (GtkText *text, const char* func, gint line);
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static void gtk_text_show_adj (GtkText *text,
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GtkAdjustment *adj,
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const char* what,
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const char* func,
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gint line);
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static void gtk_text_show_props (GtkText* test,
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const char* func,
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int line);
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#define TDEBUG(args) g_print args
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#define TEXT_ASSERT(text) gtk_text_assert (text,__PRETTY_FUNCTION__,__LINE__)
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#define TEXT_ASSERT_MARK(text,mark,msg) gtk_text_assert_mark (text,mark, \
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__PRETTY_FUNCTION__,msg,__LINE__)
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#define TEXT_SHOW(text) gtk_text_show_cache (text, __PRETTY_FUNCTION__,__LINE__)
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#define TEXT_SHOW_LINE(text,line,msg) gtk_text_show_cache_line (text,line,msg,\
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__PRETTY_FUNCTION__,__LINE__)
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#define TEXT_SHOW_ADJ(text,adj,msg) gtk_text_show_adj (text,adj,msg, \
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__PRETTY_FUNCTION__,__LINE__)
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#else
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#define TDEBUG(args)
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#define TEXT_ASSERT(text)
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#define TEXT_ASSERT_MARK(text,mark,msg)
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#define TEXT_SHOW(text)
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#define TEXT_SHOW_LINE(text,line,msg)
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#define TEXT_SHOW_ADJ(text,adj,msg)
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#endif
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/* Memory Management. */
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static GMemChunk *params_mem_chunk = NULL;
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static GMemChunk *text_property_chunk = NULL;
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static GtkWidgetClass *parent_class = NULL;
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/**********************************************************************/
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/* Widget Crap */
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/**********************************************************************/
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guint
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gtk_text_get_type ()
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{
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static guint text_type = 0;
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if (!text_type)
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{
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GtkTypeInfo text_info =
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{
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"GtkText",
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sizeof (GtkText),
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sizeof (GtkTextClass),
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(GtkClassInitFunc) gtk_text_class_init,
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(GtkObjectInitFunc) gtk_text_init,
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(GtkArgFunc) NULL,
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};
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text_type = gtk_type_unique (gtk_widget_get_type (), &text_info);
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}
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return text_type;
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}
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static void
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gtk_text_class_init (GtkTextClass *class)
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{
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GtkObjectClass *object_class;
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GtkWidgetClass *widget_class;
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object_class = (GtkObjectClass*) class;
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widget_class = (GtkWidgetClass*) class;
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parent_class = gtk_type_class (gtk_widget_get_type ());
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object_class->destroy = gtk_text_destroy;
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widget_class->realize = gtk_text_realize;
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widget_class->unrealize = gtk_text_unrealize;
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widget_class->draw_focus = gtk_text_draw_focus;
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widget_class->size_request = gtk_text_size_request;
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widget_class->size_allocate = gtk_text_size_allocate;
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widget_class->draw = gtk_text_draw;
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widget_class->expose_event = gtk_text_expose;
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widget_class->button_press_event = gtk_text_button_press;
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widget_class->button_release_event = gtk_text_button_release;
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widget_class->motion_notify_event = gtk_text_motion_notify;
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widget_class->key_press_event = gtk_text_key_press;
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widget_class->focus_in_event = gtk_text_focus_in;
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widget_class->focus_out_event = gtk_text_focus_out;
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widget_class->selection_clear_event = gtk_text_selection_clear;
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widget_class->selection_request_event = gtk_text_selection_request;
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widget_class->selection_notify_event = gtk_text_selection_notify;
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}
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static void
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gtk_text_init (GtkText *text)
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{
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GTK_WIDGET_SET_FLAGS (text, GTK_CAN_FOCUS);
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text->text = g_new (guchar, INITIAL_BUFFER_SIZE);
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text->text_len = INITIAL_BUFFER_SIZE;
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if (!params_mem_chunk)
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params_mem_chunk = g_mem_chunk_new ("LineParams",
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sizeof (LineParams),
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256 * sizeof (LineParams),
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G_ALLOC_AND_FREE);
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text->default_tab_width = 4;
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text->tab_stops = NULL;
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text->tab_stops = g_list_prepend (text->tab_stops, (void*)8);
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text->tab_stops = g_list_prepend (text->tab_stops, (void*)8);
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text->line_wrap = TRUE;
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text->is_editable = TRUE;
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}
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GtkWidget*
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gtk_text_new (GtkAdjustment *hadj,
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GtkAdjustment *vadj)
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{
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GtkText *text;
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text = gtk_type_new (gtk_text_get_type ());
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gtk_text_set_adjustments (text, hadj, vadj);
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return GTK_WIDGET (text);
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}
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void
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gtk_text_set_editable (GtkText *text,
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gint editable)
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{
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g_return_if_fail (text != NULL);
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g_return_if_fail (GTK_IS_TEXT (text));
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text->is_editable = (editable != FALSE);
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text->is_editable = FALSE; /* UNTIL JOSH FIXES IT */
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}
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void
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gtk_text_set_adjustments (GtkText *text,
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GtkAdjustment *hadj,
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GtkAdjustment *vadj)
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{
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g_return_if_fail (text != NULL);
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g_return_if_fail (GTK_IS_TEXT (text));
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if (text->hadj && (text->hadj != hadj))
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{
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gtk_signal_disconnect_by_data (GTK_OBJECT (text->hadj), text);
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gtk_object_unref (GTK_OBJECT (text->hadj));
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}
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if (text->vadj && (text->vadj != vadj))
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{
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gtk_signal_disconnect_by_data (GTK_OBJECT (text->vadj), text);
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gtk_object_unref (GTK_OBJECT (text->vadj));
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}
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if (!hadj)
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hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
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if (!vadj)
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vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
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if (text->hadj != hadj)
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{
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text->hadj = hadj;
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gtk_object_ref (GTK_OBJECT (text->hadj));
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gtk_signal_connect (GTK_OBJECT (text->hadj), "changed",
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(GtkSignalFunc) gtk_text_adjustment,
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text);
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gtk_signal_connect (GTK_OBJECT (text->hadj), "value_changed",
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(GtkSignalFunc) gtk_text_adjustment,
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text);
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gtk_signal_connect (GTK_OBJECT (text->hadj), "disconnect",
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(GtkSignalFunc) gtk_text_disconnect,
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text);
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}
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if (text->vadj != vadj)
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{
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text->vadj = vadj;
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gtk_object_ref (GTK_OBJECT (text->vadj));
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gtk_signal_connect (GTK_OBJECT (text->vadj), "changed",
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(GtkSignalFunc) gtk_text_adjustment,
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text);
|
|
gtk_signal_connect (GTK_OBJECT (text->vadj), "value_changed",
|
|
(GtkSignalFunc) gtk_text_adjustment,
|
|
text);
|
|
gtk_signal_connect (GTK_OBJECT (text->vadj), "disconnect",
|
|
(GtkSignalFunc) gtk_text_disconnect,
|
|
text);
|
|
}
|
|
}
|
|
|
|
void
|
|
gtk_text_set_point (GtkText *text,
|
|
guint index)
|
|
{
|
|
g_return_if_fail (text != NULL);
|
|
g_return_if_fail (GTK_IS_TEXT (text));
|
|
g_return_if_fail (index >= 0 && index <= TEXT_LENGTH (text));
|
|
|
|
text->point = find_mark (text, index);
|
|
}
|
|
|
|
guint
|
|
gtk_text_get_point (GtkText *text)
|
|
{
|
|
g_return_val_if_fail (text != NULL, 0);
|
|
g_return_val_if_fail (GTK_IS_TEXT (text), 0);
|
|
|
|
return text->point.index;
|
|
}
|
|
|
|
guint
|
|
gtk_text_get_length (GtkText *text)
|
|
{
|
|
g_return_val_if_fail (text != NULL, 0);
|
|
g_return_val_if_fail (GTK_IS_TEXT (text), 0);
|
|
|
|
return TEXT_LENGTH (text);
|
|
}
|
|
|
|
void
|
|
gtk_text_freeze (GtkText *text)
|
|
{
|
|
g_return_if_fail (text != NULL);
|
|
g_return_if_fail (GTK_IS_TEXT (text));
|
|
|
|
text->freeze = TRUE;
|
|
}
|
|
|
|
void
|
|
gtk_text_thaw (GtkText *text)
|
|
{
|
|
g_return_if_fail (text != NULL);
|
|
g_return_if_fail (GTK_IS_TEXT (text));
|
|
|
|
text->freeze = FALSE;
|
|
|
|
if (GTK_WIDGET_DRAWABLE (text))
|
|
{
|
|
recompute_geometry (text);
|
|
gtk_widget_queue_draw (GTK_WIDGET (text));
|
|
}
|
|
}
|
|
|
|
void
|
|
gtk_text_insert (GtkText *text,
|
|
GdkFont *font,
|
|
GdkColor *fore,
|
|
GdkColor *back,
|
|
const char *chars,
|
|
gint length)
|
|
{
|
|
g_return_if_fail (text != NULL);
|
|
g_return_if_fail (GTK_IS_TEXT (text));
|
|
|
|
g_assert (GTK_WIDGET_REALIZED (text));
|
|
|
|
/* back may be NULL, fore may not. */
|
|
if (fore == NULL)
|
|
fore = &text->widget.style->fg[GTK_STATE_NORMAL];
|
|
|
|
/* This must be because we need to have the style set up. */
|
|
g_assert (GTK_WIDGET_REALIZED(text));
|
|
|
|
if (length < 0)
|
|
length = strlen (chars);
|
|
|
|
if (length == 0)
|
|
return;
|
|
|
|
move_gap_to_point (text);
|
|
|
|
if (font == NULL)
|
|
font = GTK_WIDGET (text)->style->font;
|
|
|
|
make_forward_space (text, length);
|
|
|
|
memcpy (text->text + text->gap_position, chars, length);
|
|
|
|
insert_text_property (text, font, fore, back, length);
|
|
|
|
text->gap_size -= length;
|
|
text->gap_position += length;
|
|
|
|
advance_mark_n (&text->point, length);
|
|
}
|
|
|
|
gint
|
|
gtk_text_backward_delete (GtkText *text,
|
|
guint nchars)
|
|
{
|
|
g_return_val_if_fail (text != NULL, 0);
|
|
g_return_val_if_fail (GTK_IS_TEXT (text), 0);
|
|
|
|
if (nchars > text->point.index || nchars <= 0)
|
|
return FALSE;
|
|
|
|
gtk_text_set_point (text, text->point.index - nchars);
|
|
|
|
return gtk_text_forward_delete (text, nchars);
|
|
}
|
|
|
|
gint
|
|
gtk_text_forward_delete (GtkText *text,
|
|
guint nchars)
|
|
{
|
|
g_return_val_if_fail (text != NULL, 0);
|
|
g_return_val_if_fail (GTK_IS_TEXT (text), 0);
|
|
|
|
if (text->point.index + nchars > TEXT_LENGTH (text) || nchars <= 0)
|
|
return FALSE;
|
|
|
|
move_gap_to_point (text);
|
|
|
|
text->gap_size += nchars;
|
|
|
|
delete_text_property (text, nchars);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gtk_text_destroy (GtkObject *object)
|
|
{
|
|
g_return_if_fail (object != NULL);
|
|
g_return_if_fail (GTK_IS_TEXT (object));
|
|
|
|
if (GTK_OBJECT_CLASS (parent_class)->destroy)
|
|
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
|
|
}
|
|
|
|
static void
|
|
gtk_text_realize (GtkWidget *widget)
|
|
{
|
|
GtkText *text;
|
|
GdkWindowAttr attributes;
|
|
gint attributes_mask;
|
|
|
|
g_return_if_fail (widget != NULL);
|
|
g_return_if_fail (GTK_IS_TEXT (widget));
|
|
|
|
text = (GtkText*) widget;
|
|
GTK_WIDGET_SET_FLAGS (text, GTK_REALIZED);
|
|
|
|
attributes.window_type = GDK_WINDOW_CHILD;
|
|
attributes.x = widget->allocation.x;
|
|
attributes.y = widget->allocation.y;
|
|
attributes.width = widget->allocation.width;
|
|
attributes.height = widget->allocation.height;
|
|
attributes.wclass = GDK_INPUT_OUTPUT;
|
|
attributes.visual = gtk_widget_get_visual (widget);
|
|
attributes.colormap = gtk_widget_get_colormap (widget);
|
|
attributes.event_mask = gtk_widget_get_events (widget);
|
|
attributes.event_mask |= (GDK_EXPOSURE_MASK |
|
|
GDK_BUTTON_PRESS_MASK |
|
|
GDK_BUTTON_RELEASE_MASK |
|
|
GDK_BUTTON_MOTION_MASK |
|
|
GDK_ENTER_NOTIFY_MASK |
|
|
GDK_LEAVE_NOTIFY_MASK |
|
|
GDK_KEY_PRESS_MASK);
|
|
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
|
|
|
|
widget->window = gdk_window_new (widget->parent->window, &attributes, attributes_mask);
|
|
gdk_window_set_user_data (widget->window, text);
|
|
|
|
attributes.x = (widget->style->klass->xthickness + TEXT_BORDER_ROOM);
|
|
attributes.y = (widget->style->klass->ythickness + TEXT_BORDER_ROOM);
|
|
attributes.width = widget->allocation.width - attributes.x * 2;
|
|
attributes.height = widget->allocation.height - attributes.y * 2;
|
|
|
|
text->text_area = gdk_window_new (widget->window, &attributes, attributes_mask);
|
|
gdk_window_set_user_data (text->text_area, text);
|
|
|
|
widget->style = gtk_style_attach (widget->style, widget->window);
|
|
|
|
/* Can't call gtk_style_set_background here because its handled specially */
|
|
if (!text->widget.style->bg_pixmap[GTK_STATE_NORMAL])
|
|
gdk_window_set_background (text->widget.window, &text->widget.style->bg[GTK_STATE_NORMAL]);
|
|
|
|
if (!text->widget.style->bg_pixmap[GTK_STATE_NORMAL])
|
|
gdk_window_set_background (text->text_area, &text->widget.style->bg[GTK_STATE_NORMAL]);
|
|
|
|
text->line_wrap_bitmap = gdk_bitmap_create_from_data (text->text_area,
|
|
(gchar*) line_wrap_bits,
|
|
line_wrap_width,
|
|
line_wrap_height);
|
|
|
|
text->line_arrow_bitmap = gdk_bitmap_create_from_data (text->text_area,
|
|
(gchar*) line_arrow_bits,
|
|
line_arrow_width,
|
|
line_arrow_height);
|
|
|
|
text->gc = gdk_gc_new (text->text_area);
|
|
gdk_gc_set_exposures (text->gc, TRUE);
|
|
gdk_gc_set_foreground (text->gc, &widget->style->fg[GTK_STATE_NORMAL]);
|
|
|
|
init_properties (text);
|
|
|
|
gdk_window_show (text->text_area);
|
|
}
|
|
|
|
static void
|
|
gtk_text_unrealize (GtkWidget *widget)
|
|
{
|
|
GtkText *text;
|
|
|
|
g_return_if_fail (widget != NULL);
|
|
g_return_if_fail (GTK_IS_TEXT (widget));
|
|
|
|
text = GTK_TEXT (widget);
|
|
GTK_WIDGET_UNSET_FLAGS (widget, GTK_REALIZED | GTK_MAPPED);
|
|
|
|
gtk_style_detach (widget->style);
|
|
gdk_window_destroy (widget->window);
|
|
gdk_window_destroy (text->text_area);
|
|
gdk_gc_destroy (text->gc);
|
|
|
|
widget->window = NULL;
|
|
text->text_area = NULL;
|
|
text->gc = NULL;
|
|
}
|
|
|
|
static void
|
|
clear_focus_area (GtkText *text, gint area_x, gint area_y, gint area_width, gint area_height)
|
|
{
|
|
gint ythick = TEXT_BORDER_ROOM + text->widget.style->klass->ythickness;
|
|
gint xthick = TEXT_BORDER_ROOM + text->widget.style->klass->xthickness;
|
|
|
|
gint width, height;
|
|
gint xorig, yorig;
|
|
gint x, y;
|
|
|
|
gdk_window_get_size (text->widget.style->bg_pixmap[GTK_STATE_NORMAL], &width, &height);
|
|
|
|
yorig = - text->first_onscreen_ver_pixel + ythick;
|
|
xorig = - text->first_onscreen_hor_pixel + xthick;
|
|
|
|
while (yorig > 0)
|
|
yorig -= height;
|
|
|
|
while (xorig > 0)
|
|
xorig -= width;
|
|
|
|
for (y = area_y; y < area_y + area_height; )
|
|
{
|
|
gint yoff = (y - yorig) % height;
|
|
gint yw = MIN(height - yoff, (area_y + area_height) - y);
|
|
|
|
for (x = area_x; x < area_x + area_width; )
|
|
{
|
|
gint xoff = (x - xorig) % width;
|
|
gint xw = MIN(width - xoff, (area_x + area_width) - x);
|
|
|
|
gdk_draw_pixmap (text->widget.window,
|
|
text->gc,
|
|
text->widget.style->bg_pixmap[GTK_STATE_NORMAL],
|
|
xoff,
|
|
yoff,
|
|
x,
|
|
y,
|
|
xw,
|
|
yw);
|
|
|
|
x += width - xoff;
|
|
}
|
|
y += height - yoff;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_text_draw_focus (GtkWidget *widget)
|
|
{
|
|
GtkText *text;
|
|
gint width, height;
|
|
gint x, y;
|
|
|
|
g_return_if_fail (widget != NULL);
|
|
g_return_if_fail (GTK_IS_TEXT (widget));
|
|
|
|
text = GTK_TEXT (widget);
|
|
|
|
if (GTK_WIDGET_DRAWABLE (widget))
|
|
{
|
|
TDEBUG (("in gtk_text_draw_focus\n"));
|
|
|
|
x = 0;
|
|
y = 0;
|
|
width = widget->allocation.width;
|
|
height = widget->allocation.height;
|
|
|
|
if (widget->style->bg_pixmap[GTK_STATE_NORMAL])
|
|
{
|
|
gint ythick = TEXT_BORDER_ROOM + widget->style->klass->ythickness;
|
|
gint xthick = TEXT_BORDER_ROOM + widget->style->klass->xthickness;
|
|
|
|
/* top rect */
|
|
clear_focus_area (text, 0, 0, width, ythick);
|
|
/* right rect */
|
|
clear_focus_area (text, 0, ythick, xthick, height - 2 * ythick);
|
|
/* left rect */
|
|
clear_focus_area (text, width - xthick, ythick, xthick, height - 2 * ythick);
|
|
/* bottom rect */
|
|
clear_focus_area (text, 0, height - ythick, width, ythick);
|
|
}
|
|
|
|
if (GTK_WIDGET_HAS_FOCUS (widget))
|
|
{
|
|
x += 1;
|
|
y += 1;
|
|
width -= 2;
|
|
height -= 2;
|
|
|
|
gdk_draw_rectangle (widget->window,
|
|
widget->style->fg_gc[GTK_STATE_NORMAL],
|
|
FALSE, 0, 0,
|
|
widget->allocation.width - 1,
|
|
widget->allocation.height - 1);
|
|
}
|
|
else
|
|
{
|
|
gdk_draw_rectangle (widget->window,
|
|
widget->style->white_gc, FALSE,
|
|
x + 2,
|
|
y + 2,
|
|
width - 1 - 2,
|
|
height - 1 - 2);
|
|
}
|
|
|
|
gtk_draw_shadow (widget->style, widget->window,
|
|
GTK_STATE_NORMAL, GTK_SHADOW_IN,
|
|
x, y, width, height);
|
|
}
|
|
else
|
|
{
|
|
TDEBUG (("in gtk_text_draw_focus (undrawable !!!)\n"));
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_text_size_request (GtkWidget *widget,
|
|
GtkRequisition *requisition)
|
|
{
|
|
gint xthickness;
|
|
gint ythickness;
|
|
gint char_height;
|
|
gint char_width;
|
|
|
|
g_return_if_fail (widget != NULL);
|
|
g_return_if_fail (GTK_IS_TEXT (widget));
|
|
g_return_if_fail (requisition != NULL);
|
|
|
|
xthickness = widget->style->klass->xthickness + TEXT_BORDER_ROOM;
|
|
ythickness = widget->style->klass->ythickness + TEXT_BORDER_ROOM;
|
|
|
|
char_height = MIN_TEXT_HEIGHT_LINES * (widget->style->font->ascent +
|
|
widget->style->font->descent);
|
|
|
|
char_width = MIN_TEXT_WIDTH_LINES * (gdk_text_width (widget->style->font,
|
|
"ABCDEFGHIJKLMNOPQRSTUVWXYZ",
|
|
26)
|
|
/ 26);
|
|
|
|
requisition->width = char_width + xthickness * 2;
|
|
requisition->height = char_height + ythickness * 2;
|
|
}
|
|
|
|
static void
|
|
gtk_text_size_allocate (GtkWidget *widget,
|
|
GtkAllocation *allocation)
|
|
{
|
|
GtkText *text;
|
|
|
|
g_return_if_fail (widget != NULL);
|
|
g_return_if_fail (GTK_IS_TEXT (widget));
|
|
g_return_if_fail (allocation != NULL);
|
|
|
|
text = GTK_TEXT (widget);
|
|
|
|
widget->allocation = *allocation;
|
|
if (GTK_WIDGET_REALIZED (widget))
|
|
{
|
|
gdk_window_move_resize (widget->window,
|
|
allocation->x, allocation->y,
|
|
allocation->width, allocation->height);
|
|
|
|
gdk_window_move_resize (text->text_area,
|
|
widget->style->klass->xthickness + TEXT_BORDER_ROOM,
|
|
widget->style->klass->ythickness + TEXT_BORDER_ROOM,
|
|
widget->allocation.width - (widget->style->klass->xthickness +
|
|
TEXT_BORDER_ROOM) * 2,
|
|
widget->allocation.height - (widget->style->klass->ythickness +
|
|
TEXT_BORDER_ROOM) * 2);
|
|
|
|
recompute_geometry (text);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_text_draw (GtkWidget *widget,
|
|
GdkRectangle *area)
|
|
{
|
|
g_return_if_fail (widget != NULL);
|
|
g_return_if_fail (GTK_IS_TEXT (widget));
|
|
g_return_if_fail (area != NULL);
|
|
|
|
if (GTK_WIDGET_DRAWABLE (widget))
|
|
{
|
|
expose_text (GTK_TEXT (widget), area, TRUE);
|
|
gtk_widget_draw_focus (widget);
|
|
}
|
|
}
|
|
|
|
static gint
|
|
gtk_text_expose (GtkWidget *widget,
|
|
GdkEventExpose *event)
|
|
{
|
|
g_return_val_if_fail (widget != NULL, FALSE);
|
|
g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
|
|
g_return_val_if_fail (event != NULL, FALSE);
|
|
|
|
if (event->window == GTK_TEXT (widget)->text_area)
|
|
{
|
|
TDEBUG (("in gtk_text_expose (expose)\n"));
|
|
expose_text (GTK_TEXT (widget), &event->area, TRUE);
|
|
}
|
|
else if (event->count == 0)
|
|
{
|
|
TDEBUG (("in gtk_text_expose (focus)\n"));
|
|
gtk_widget_draw_focus (widget);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gint
|
|
gtk_text_button_press (GtkWidget *widget,
|
|
GdkEventButton *event)
|
|
{
|
|
GtkText *text;
|
|
|
|
g_return_val_if_fail (widget != NULL, FALSE);
|
|
g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
|
|
g_return_val_if_fail (event != NULL, FALSE);
|
|
|
|
text = GTK_TEXT(widget);
|
|
if (!GTK_WIDGET_HAS_FOCUS (widget))
|
|
gtk_widget_grab_focus (widget);
|
|
|
|
if (event->type == GDK_BUTTON_PRESS && event->button != 2)
|
|
gtk_grab_add (widget);
|
|
|
|
if (event->button == 1)
|
|
{
|
|
switch (event->type)
|
|
{
|
|
case GDK_BUTTON_PRESS:
|
|
undraw_cursor (GTK_TEXT (widget), FALSE);
|
|
mouse_click_1 (GTK_TEXT (widget), event);
|
|
draw_cursor (GTK_TEXT (widget), FALSE);
|
|
/* start selection */
|
|
break;
|
|
|
|
case GDK_2BUTTON_PRESS:
|
|
/* select word */
|
|
break;
|
|
|
|
case GDK_3BUTTON_PRESS:
|
|
/* select line */
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
else if (event->type == GDK_BUTTON_PRESS)
|
|
{
|
|
if (event->button == 2)
|
|
{
|
|
/* insert selection. */
|
|
}
|
|
else
|
|
{
|
|
/* start selection */
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gint
|
|
gtk_text_button_release (GtkWidget *widget,
|
|
GdkEventButton *event)
|
|
{
|
|
GtkText *text;
|
|
g_return_val_if_fail (widget != NULL, FALSE);
|
|
g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
|
|
g_return_val_if_fail (event != NULL, FALSE);
|
|
|
|
if (event->button != 2)
|
|
{
|
|
gtk_grab_remove (widget);
|
|
|
|
text = GTK_TEXT (widget);
|
|
|
|
/* stop selecting. */
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gint
|
|
gtk_text_motion_notify (GtkWidget *widget,
|
|
GdkEventMotion *event)
|
|
{
|
|
GtkText *text;
|
|
gint x;
|
|
|
|
g_return_val_if_fail (widget != NULL, FALSE);
|
|
g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
|
|
g_return_val_if_fail (event != NULL, FALSE);
|
|
|
|
text = GTK_TEXT (widget);
|
|
|
|
x = event->x;
|
|
if (event->is_hint || (text->text_area != event->window))
|
|
gdk_window_get_pointer (text->text_area, &x, NULL, NULL);
|
|
|
|
/* update selection */
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gtk_text_insert_1_at_point (GtkText* text, char key)
|
|
{
|
|
gtk_text_insert (text,
|
|
MARK_CURRENT_FONT (&text->point),
|
|
MARK_CURRENT_FORE (&text->point),
|
|
MARK_CURRENT_BACK (&text->point),
|
|
&key, 1);
|
|
}
|
|
|
|
static gint
|
|
gtk_text_key_press (GtkWidget *widget,
|
|
GdkEventKey *event)
|
|
{
|
|
GtkText *text;
|
|
gchar key;
|
|
gint return_val;
|
|
|
|
g_return_val_if_fail (widget != NULL, FALSE);
|
|
g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
|
|
g_return_val_if_fail (event != NULL, FALSE);
|
|
|
|
return_val = FALSE;
|
|
|
|
text = GTK_TEXT (widget);
|
|
|
|
if (!return_val)
|
|
{
|
|
key = event->keyval;
|
|
return_val = TRUE;
|
|
|
|
if (text->is_editable == FALSE)
|
|
{
|
|
switch (event->keyval)
|
|
{
|
|
case GDK_Home: scroll_int (text, -text->vadj->value); break;
|
|
case GDK_End: scroll_int (text, +text->vadj->upper); break;
|
|
case GDK_Page_Up: scroll_int (text, -text->vadj->page_increment); break;
|
|
case GDK_Page_Down: scroll_int (text, +text->vadj->page_increment); break;
|
|
case GDK_Up: scroll_int (text, -KEY_SCROLL_PIXELS); break;
|
|
case GDK_Down: scroll_int (text, +KEY_SCROLL_PIXELS); break;
|
|
default: break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
text->point = find_mark (text, text->cursor_mark.index);
|
|
|
|
switch (event->keyval)
|
|
{
|
|
case GDK_Home: move_cursor_buffer_ver (text, -1); break;
|
|
case GDK_End: move_cursor_buffer_ver (text, +1); break;
|
|
case GDK_Page_Up: move_cursor_page_ver (text, -1); break;
|
|
case GDK_Page_Down: move_cursor_page_ver (text, +1); break;
|
|
case GDK_Up: move_cursor_ver (text, -1); break;
|
|
case GDK_Down: move_cursor_ver (text, +1); break;
|
|
case GDK_Left: move_cursor_hor (text, -1); break;
|
|
case GDK_Right: move_cursor_hor (text, +1); break;
|
|
|
|
case GDK_BackSpace:
|
|
if (!text->has_cursor || text->cursor_mark.index == 0)
|
|
break;
|
|
|
|
gtk_text_backward_delete (text, 1);
|
|
break;
|
|
case GDK_Delete:
|
|
if (!text->has_cursor || LAST_INDEX (text, text->cursor_mark))
|
|
break;
|
|
|
|
gtk_text_forward_delete (text, 1);
|
|
break;
|
|
case GDK_Tab:
|
|
if (!text->has_cursor)
|
|
break;
|
|
|
|
gtk_text_insert_1_at_point (text, '\t');
|
|
break;
|
|
case GDK_Return:
|
|
if (!text->has_cursor)
|
|
break;
|
|
|
|
gtk_text_insert_1_at_point (text, '\n');
|
|
break;
|
|
default:
|
|
if (!text->has_cursor)
|
|
break;
|
|
|
|
if ((event->keyval >= 0x20) && (event->keyval <= 0x7e))
|
|
{
|
|
return_val = TRUE;
|
|
|
|
if (event->state & GDK_CONTROL_MASK)
|
|
{
|
|
if ((key >= 'A') && (key <= 'Z'))
|
|
key -= 'A' - 'a';
|
|
|
|
if ((key >= 'a') && (key <= 'z') && text->control_keys[(int) (key - 'a')])
|
|
(* text->control_keys[(int) (key - 'a')]) (text);
|
|
}
|
|
else if (event->state & GDK_MOD1_MASK)
|
|
{
|
|
g_message ("alt key");
|
|
|
|
if ((key >= 'A') && (key <= 'Z'))
|
|
key -= 'A' - 'a';
|
|
|
|
if ((key >= 'a') && (key <= 'z') && text->alt_keys[(int) (key - 'a')])
|
|
(* text->alt_keys[(int) (key - 'a')]) (text);
|
|
}
|
|
else
|
|
{
|
|
gtk_text_insert_1_at_point (text, key);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
return_val = FALSE;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return return_val;
|
|
}
|
|
|
|
static gint
|
|
gtk_text_focus_in (GtkWidget *widget,
|
|
GdkEventFocus *event)
|
|
{
|
|
g_return_val_if_fail (widget != NULL, FALSE);
|
|
g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
|
|
g_return_val_if_fail (event != NULL, FALSE);
|
|
|
|
TDEBUG (("in gtk_text_focus_in\n"));
|
|
|
|
GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
|
|
gtk_widget_draw_focus (widget);
|
|
|
|
draw_cursor (GTK_TEXT(widget), TRUE);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gint
|
|
gtk_text_focus_out (GtkWidget *widget,
|
|
GdkEventFocus *event)
|
|
{
|
|
g_return_val_if_fail (widget != NULL, FALSE);
|
|
g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
|
|
g_return_val_if_fail (event != NULL, FALSE);
|
|
|
|
TDEBUG (("in gtk_text_focus_out\n"));
|
|
|
|
GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
|
|
gtk_widget_draw_focus (widget);
|
|
|
|
undraw_cursor (GTK_TEXT(widget), TRUE);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gtk_text_adjustment (GtkAdjustment *adjustment,
|
|
GtkText *text)
|
|
{
|
|
g_return_if_fail (adjustment != NULL);
|
|
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
|
|
g_return_if_fail (text != NULL);
|
|
g_return_if_fail (GTK_IS_TEXT (text));
|
|
|
|
if (adjustment == text->hadj)
|
|
{
|
|
g_warning ("horizontal scrolling not implemented");
|
|
}
|
|
else
|
|
{
|
|
gint diff = ((gint)adjustment->value) - text->last_ver_value;
|
|
|
|
if (diff != 0)
|
|
{
|
|
undraw_cursor (text, FALSE);
|
|
|
|
if (diff > 0)
|
|
scroll_down (text, diff);
|
|
else /* if (diff < 0) */
|
|
scroll_up (text, diff);
|
|
|
|
draw_cursor (text, FALSE);
|
|
|
|
text->last_ver_value = adjustment->value;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_text_disconnect (GtkAdjustment *adjustment,
|
|
GtkText *text)
|
|
{
|
|
g_return_if_fail (adjustment != NULL);
|
|
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
|
|
g_return_if_fail (text != NULL);
|
|
g_return_if_fail (GTK_IS_TEXT (text));
|
|
|
|
if (adjustment == text->hadj)
|
|
text->hadj = NULL;
|
|
if (adjustment == text->vadj)
|
|
text->vadj = NULL;
|
|
}
|
|
|
|
|
|
static GtkPropertyMark
|
|
find_this_line_start_mark (GtkText* text, guint point_position, const GtkPropertyMark* near)
|
|
{
|
|
GtkPropertyMark mark;
|
|
|
|
mark = find_mark_near (text, point_position, near);
|
|
|
|
while (mark.index > 0 &&
|
|
TEXT_INDEX (text, mark.index - 1) != LINE_DELIM)
|
|
decrement_mark (&mark);
|
|
|
|
return mark;
|
|
}
|
|
|
|
static void
|
|
init_tab_cont (GtkText* text, PrevTabCont* tab_cont)
|
|
{
|
|
tab_cont->pixel_offset = 0;
|
|
tab_cont->tab_start.tab_stops = text->tab_stops;
|
|
tab_cont->tab_start.to_next_tab = (gulong) text->tab_stops->data;
|
|
|
|
if (!tab_cont->tab_start.to_next_tab)
|
|
tab_cont->tab_start.to_next_tab = text->default_tab_width;
|
|
}
|
|
|
|
static void
|
|
line_params_iterate (GtkText* text,
|
|
const GtkPropertyMark* mark0,
|
|
const PrevTabCont* tab_mark0,
|
|
gint8 alloc,
|
|
void* data,
|
|
LineIteratorFunction iter)
|
|
/* mark0 MUST be a real line start. if ALLOC, allocate line params
|
|
* from a mem chunk. DATA is passed to ITER_CALL, which is called
|
|
* for each line following MARK, iteration continues unless ITER_CALL
|
|
* returns TRUE. */
|
|
{
|
|
GtkPropertyMark mark = *mark0;
|
|
PrevTabCont tab_conts[2];
|
|
LineParams *lp, lpbuf;
|
|
gint tab_cont_index = 0;
|
|
|
|
if (tab_mark0)
|
|
tab_conts[0] = *tab_mark0;
|
|
else
|
|
init_tab_cont (text, tab_conts);
|
|
|
|
for (;;)
|
|
{
|
|
if (alloc)
|
|
lp = g_chunk_new (LineParams, params_mem_chunk);
|
|
else
|
|
lp = &lpbuf;
|
|
|
|
*lp = find_line_params (text, &mark, tab_conts + tab_cont_index,
|
|
tab_conts + (tab_cont_index + 1) % 2);
|
|
|
|
if ((*iter) (text, lp, data))
|
|
return;
|
|
|
|
if (LAST_INDEX (text, lp->end))
|
|
break;
|
|
|
|
mark = lp->end;
|
|
advance_mark (&mark);
|
|
tab_cont_index = (tab_cont_index + 1) % 2;
|
|
}
|
|
}
|
|
|
|
static gint
|
|
fetch_lines_iterator (GtkText* text, LineParams* lp, void* data)
|
|
{
|
|
FetchLinesData *fldata = (FetchLinesData*) data;
|
|
|
|
fldata->new_lines = g_list_prepend (fldata->new_lines, lp);
|
|
|
|
switch (fldata->fl_type)
|
|
{
|
|
case FetchLinesCount:
|
|
if (!text->line_wrap || !lp->wraps)
|
|
fldata->data += 1;
|
|
|
|
if (fldata->data >= fldata->data_max)
|
|
return TRUE;
|
|
|
|
break;
|
|
case FetchLinesPixels:
|
|
|
|
fldata->data += LINE_HEIGHT(*lp);
|
|
|
|
if (fldata->data >= fldata->data_max)
|
|
return TRUE;
|
|
|
|
break;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static GList*
|
|
fetch_lines (GtkText* text,
|
|
const GtkPropertyMark* mark0,
|
|
const PrevTabCont* tab_cont0,
|
|
FLType fl_type,
|
|
gint data)
|
|
{
|
|
FetchLinesData fl_data;
|
|
|
|
fl_data.new_lines = NULL;
|
|
fl_data.data = 0;
|
|
fl_data.data_max = data;
|
|
fl_data.fl_type = fl_type;
|
|
|
|
line_params_iterate (text, mark0, tab_cont0, TRUE, &fl_data, fetch_lines_iterator);
|
|
|
|
return g_list_reverse (fl_data.new_lines);
|
|
}
|
|
|
|
static void
|
|
fetch_lines_backward (GtkText* text)
|
|
{
|
|
GList* new_lines = NULL, *new_line_start;
|
|
|
|
GtkPropertyMark mark = find_this_line_start_mark (text,
|
|
CACHE_DATA(text->line_start_cache).start.index - 1,
|
|
&CACHE_DATA(text->line_start_cache).start);
|
|
|
|
new_line_start = new_lines = fetch_lines (text, &mark, NULL, FetchLinesCount, 1);
|
|
|
|
while (new_line_start->next)
|
|
new_line_start = new_line_start->next;
|
|
|
|
new_line_start->next = text->line_start_cache;
|
|
text->line_start_cache->prev = new_line_start;
|
|
}
|
|
|
|
static void
|
|
fetch_lines_forward (GtkText* text, gint line_count)
|
|
{
|
|
GtkPropertyMark mark;
|
|
GList* line = text->line_start_cache;
|
|
|
|
while(line->next)
|
|
line = line->next;
|
|
|
|
mark = CACHE_DATA(line).end;
|
|
|
|
if (LAST_INDEX (text, mark))
|
|
return;
|
|
|
|
advance_mark(&mark);
|
|
|
|
line->next = fetch_lines (text, &mark, &CACHE_DATA(line).tab_cont_next, FetchLinesCount, line_count);
|
|
|
|
if (line->next)
|
|
line->next->prev = line;
|
|
}
|
|
|
|
static gint
|
|
total_line_height (GtkText* text, GList* line, gint line_count)
|
|
{
|
|
gint height = 0;
|
|
|
|
for (; line && line_count > 0; line = line->next)
|
|
{
|
|
height += LINE_HEIGHT(CACHE_DATA(line));
|
|
|
|
if (!text->line_wrap || !CACHE_DATA(line).wraps)
|
|
line_count -= 1;
|
|
|
|
if (!line->next)
|
|
fetch_lines_forward (text, line_count);
|
|
}
|
|
|
|
return height;
|
|
}
|
|
|
|
static void
|
|
swap_lines (GtkText* text, GList* old, GList* new, gint old_line_count)
|
|
{
|
|
if (old == text->line_start_cache)
|
|
{
|
|
GList* last;
|
|
|
|
for (; old_line_count > 0; old_line_count -= 1)
|
|
{
|
|
while (text->line_start_cache &&
|
|
text->line_wrap &&
|
|
CACHE_DATA(text->line_start_cache).wraps)
|
|
remove_cache_line(text, text->line_start_cache);
|
|
|
|
remove_cache_line(text, text->line_start_cache);
|
|
}
|
|
|
|
last = g_list_last (new);
|
|
|
|
last->next = text->line_start_cache;
|
|
|
|
if (text->line_start_cache)
|
|
text->line_start_cache->prev = last;
|
|
|
|
text->line_start_cache = new;
|
|
}
|
|
else
|
|
{
|
|
GList *last;
|
|
|
|
g_assert (old->prev);
|
|
|
|
last = old->prev;
|
|
|
|
for (; old_line_count > 0; old_line_count -= 1)
|
|
{
|
|
while (old && text->line_wrap && CACHE_DATA(old).wraps)
|
|
old = remove_cache_line (text, old);
|
|
|
|
old = remove_cache_line (text, old);
|
|
}
|
|
|
|
last->next = new;
|
|
new->prev = last;
|
|
|
|
last = g_list_last (new);
|
|
|
|
last->next = old;
|
|
|
|
if (old)
|
|
old->prev = last;
|
|
}
|
|
}
|
|
|
|
static void
|
|
correct_cache_delete (GtkText* text, gint lines)
|
|
{
|
|
GList* cache = text->current_line;
|
|
gint i;
|
|
|
|
for (i = 0; cache && i < lines; i += 1, cache = cache->next)
|
|
/* nothing */;
|
|
|
|
for (; cache; cache = cache->next)
|
|
{
|
|
GtkPropertyMark *start = &CACHE_DATA(cache).start;
|
|
GtkPropertyMark *end = &CACHE_DATA(cache).end;
|
|
|
|
start->index -= 1;
|
|
end->index -= 1;
|
|
|
|
if (start->property == text->point.property)
|
|
start->offset = start->index - (text->point.index - text->point.offset);
|
|
|
|
if (end->property == text->point.property)
|
|
end->offset = end->index - (text->point.index - text->point.offset);
|
|
|
|
/*TEXT_ASSERT_MARK(text, start, "start");*/
|
|
/*TEXT_ASSERT_MARK(text, end, "end");*/
|
|
}
|
|
}
|
|
|
|
static void
|
|
delete_char_line_expose (GtkText* text, gchar key, guint old_pixels)
|
|
{
|
|
gint pixel_height;
|
|
guint new_pixels = 0;
|
|
gint old_line_count = 1 + (key == LINE_DELIM);
|
|
GdkRectangle rect;
|
|
GList* new_line = NULL;
|
|
gint width, height;
|
|
|
|
text->cursor_virtual_x = 0;
|
|
|
|
undraw_cursor (text, FALSE);
|
|
|
|
correct_cache_delete (text, old_line_count);
|
|
|
|
pixel_height = pixel_height_of(text, text->current_line) -
|
|
LINE_HEIGHT(CACHE_DATA(text->current_line));
|
|
|
|
if (CACHE_DATA(text->current_line).start.index == text->point.index)
|
|
CACHE_DATA(text->current_line).start = text->point;
|
|
|
|
new_line = fetch_lines (text,
|
|
&CACHE_DATA(text->current_line).start,
|
|
&CACHE_DATA(text->current_line).tab_cont,
|
|
FetchLinesCount,
|
|
1);
|
|
|
|
swap_lines (text, text->current_line, new_line, old_line_count);
|
|
|
|
text->current_line = new_line;
|
|
|
|
new_pixels = total_line_height (text, new_line, 1);
|
|
|
|
gdk_window_get_size (text->text_area, &width, &height);
|
|
|
|
if (old_pixels != new_pixels)
|
|
{
|
|
gdk_draw_pixmap (text->text_area,
|
|
text->gc,
|
|
text->text_area,
|
|
0,
|
|
pixel_height + old_pixels,
|
|
0,
|
|
pixel_height + new_pixels,
|
|
width,
|
|
height);
|
|
|
|
text->vadj->upper += new_pixels;
|
|
text->vadj->upper -= old_pixels;
|
|
adjust_adj (text, text->vadj);
|
|
}
|
|
|
|
rect.x = 0;
|
|
rect.y = pixel_height;
|
|
rect.width = width;
|
|
rect.height = new_pixels;
|
|
|
|
expose_text (text, &rect, FALSE);
|
|
gtk_text_draw_focus ( (GtkWidget *) text);
|
|
|
|
text->cursor_mark = text->point;
|
|
|
|
find_cursor (text);
|
|
|
|
draw_cursor (text, FALSE);
|
|
|
|
if (old_pixels != new_pixels)
|
|
process_exposes (text);
|
|
|
|
TEXT_ASSERT (text);
|
|
TEXT_SHOW(text);
|
|
}
|
|
|
|
static void
|
|
correct_cache_insert (GtkText* text)
|
|
{
|
|
GList* cache = text->current_line;
|
|
|
|
for (; cache; cache = cache->next)
|
|
{
|
|
GtkPropertyMark *start = &CACHE_DATA(cache).start;
|
|
GtkPropertyMark *end = &CACHE_DATA(cache).end;
|
|
|
|
if (start->index >= text->point.index)
|
|
{
|
|
if (start->property == text->point.property)
|
|
move_mark_n(start, 1);
|
|
else
|
|
start->index += 1;
|
|
}
|
|
|
|
if (end->index >= text->point.index)
|
|
{
|
|
if (end->property == text->point.property)
|
|
move_mark_n(end, 1);
|
|
else
|
|
end->index += 1;
|
|
}
|
|
|
|
/*TEXT_ASSERT_MARK(text, start, "start");*/
|
|
/*TEXT_ASSERT_MARK(text, end, "end");*/
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
insert_char_line_expose (GtkText* text, gchar key, guint old_pixels)
|
|
{
|
|
gint pixel_height;
|
|
guint new_pixels = 0;
|
|
guint new_line_count = 1 + (key == LINE_DELIM);
|
|
GdkRectangle rect;
|
|
GList* new_line = NULL;
|
|
gint width, height;
|
|
|
|
text->cursor_virtual_x = 0;
|
|
|
|
undraw_cursor (text, FALSE);
|
|
|
|
correct_cache_insert (text);
|
|
|
|
TEXT_SHOW_ADJ (text, text->vadj, "vadj");
|
|
|
|
pixel_height = pixel_height_of(text, text->current_line) -
|
|
LINE_HEIGHT(CACHE_DATA(text->current_line));
|
|
|
|
new_line = fetch_lines (text,
|
|
&CACHE_DATA(text->current_line).start,
|
|
&CACHE_DATA(text->current_line).tab_cont,
|
|
FetchLinesCount,
|
|
new_line_count);
|
|
|
|
swap_lines (text, text->current_line, new_line, 1);
|
|
|
|
text->current_line = new_line;
|
|
|
|
new_pixels = total_line_height (text, new_line, new_line_count);
|
|
|
|
gdk_window_get_size (text->text_area, &width, &height);
|
|
|
|
if (old_pixels != new_pixels)
|
|
{
|
|
gdk_draw_pixmap (text->text_area,
|
|
text->gc,
|
|
text->text_area,
|
|
0,
|
|
pixel_height + old_pixels,
|
|
0,
|
|
pixel_height + new_pixels,
|
|
width,
|
|
height + (old_pixels - new_pixels) - pixel_height);
|
|
|
|
text->vadj->upper += new_pixels;
|
|
text->vadj->upper -= old_pixels;
|
|
adjust_adj (text, text->vadj);
|
|
}
|
|
|
|
rect.x = 0;
|
|
rect.y = pixel_height;
|
|
rect.width = width;
|
|
rect.height = new_pixels;
|
|
|
|
expose_text (text, &rect, FALSE);
|
|
gtk_text_draw_focus ( (GtkWidget *) text);
|
|
|
|
text->cursor_mark = text->point;
|
|
|
|
find_cursor (text);
|
|
|
|
draw_cursor (text, FALSE);
|
|
|
|
if (old_pixels != new_pixels)
|
|
process_exposes (text);
|
|
|
|
TEXT_SHOW_ADJ (text, text->vadj, "vadj");
|
|
TEXT_ASSERT (text);
|
|
TEXT_SHOW(text);
|
|
}
|
|
|
|
static guint
|
|
font_hash (gpointer font)
|
|
{
|
|
return gdk_font_id ((GdkFont*) font);
|
|
}
|
|
|
|
static TextFont*
|
|
get_text_font (GdkFont* gfont)
|
|
{
|
|
static GHashTable *font_cache_table = NULL;
|
|
TextFont* tf;
|
|
gpointer lu;
|
|
gint i;
|
|
|
|
if (!font_cache_table)
|
|
font_cache_table = g_hash_table_new (font_hash, (GCompareFunc) gdk_font_equal);
|
|
|
|
lu = g_hash_table_lookup (font_cache_table, gfont);
|
|
|
|
if (lu)
|
|
return (TextFont*)lu;
|
|
|
|
tf = g_new (TextFont, 1);
|
|
|
|
tf->gdk_font = gfont;
|
|
|
|
for(i = 0; i < 256; i += 1)
|
|
tf->char_widths[i] = gdk_char_width (gfont, (char)i);
|
|
|
|
g_hash_table_insert (font_cache_table, gfont, tf);
|
|
|
|
return tf;
|
|
}
|
|
|
|
static gint
|
|
text_properties_equal (TextProperty* prop, GdkFont* font, GdkColor *fore, GdkColor *back)
|
|
{
|
|
return prop->font == get_text_font(font) &&
|
|
(fore == prop->fore_color || gdk_color_equal(prop->fore_color, fore)) &&
|
|
(back == prop->back_color || (back && prop->back_color && gdk_color_equal(prop->back_color, back)));
|
|
}
|
|
|
|
static TextProperty*
|
|
new_text_property (GdkFont* font, GdkColor* fore, GdkColor* back, guint length)
|
|
{
|
|
TextProperty *prop;
|
|
|
|
if (text_property_chunk == NULL)
|
|
{
|
|
text_property_chunk = g_mem_chunk_new ("text property mem chunk",
|
|
sizeof(TextProperty),
|
|
1024*sizeof(TextProperty),
|
|
G_ALLOC_ONLY);
|
|
}
|
|
|
|
prop = g_chunk_new(TextProperty, text_property_chunk);
|
|
|
|
prop->font = get_text_font (font);
|
|
prop->fore_color = fore;
|
|
prop->back_color = back;
|
|
prop->length = length;
|
|
|
|
return prop;
|
|
}
|
|
|
|
/* Flop the memory between the point and the gap around like a
|
|
* dead fish. */
|
|
static void
|
|
move_gap_to_point (GtkText* text)
|
|
{
|
|
if (text->gap_position < text->point.index)
|
|
{
|
|
gint diff = text->point.index - text->gap_position;
|
|
|
|
g_memmove (text->text + text->gap_position,
|
|
text->text + text->gap_position + text->gap_size,
|
|
diff);
|
|
|
|
text->gap_position = text->point.index;
|
|
}
|
|
else if (text->gap_position > text->point.index)
|
|
{
|
|
gint diff = text->gap_position - text->point.index;
|
|
|
|
g_memmove (text->text + text->point.index + text->gap_size,
|
|
text->text + text->point.index,
|
|
diff);
|
|
|
|
text->gap_position = text->point.index;
|
|
}
|
|
}
|
|
|
|
/* Increase the gap size. */
|
|
static void
|
|
make_forward_space (GtkText* text, guint len)
|
|
{
|
|
if (text->gap_size < len)
|
|
{
|
|
guint sum = MAX(2*len, MIN_GAP_SIZE) + text->text_end;
|
|
|
|
if (sum >= text->text_len)
|
|
{
|
|
guint i = 1;
|
|
|
|
while (i <= sum) i <<= 1;
|
|
|
|
text->text = (guchar*)g_realloc(text->text, i);
|
|
}
|
|
|
|
g_memmove (text->text + text->gap_position + text->gap_size + 2*len,
|
|
text->text + text->gap_position + text->gap_size,
|
|
text->text_end - (text->gap_position + text->gap_size));
|
|
|
|
text->text_end += len*2;
|
|
text->gap_size += len*2;
|
|
}
|
|
}
|
|
|
|
/* Inserts into the text property list a list element that guarantees
|
|
* that for len characters following the point, text has the correct
|
|
* property. does not move point. adjusts text_properties_point and
|
|
* text_properties_point_offset relative to the current value of
|
|
* point. */
|
|
static void
|
|
insert_text_property (GtkText* text, GdkFont* font,
|
|
GdkColor *fore, GdkColor* back, guint len)
|
|
{
|
|
GtkPropertyMark *mark = &text->point;
|
|
TextProperty* forward_prop = MARK_CURRENT_PROPERTY(mark);
|
|
TextProperty* backward_prop = MARK_PREV_PROPERTY(mark);
|
|
|
|
if (MARK_OFFSET(mark) == 0)
|
|
{
|
|
/* Point is on the boundary of two properties.
|
|
* If it is the same as either, grow, else insert
|
|
* a new one. */
|
|
|
|
if (text_properties_equal(forward_prop, font, fore, back))
|
|
{
|
|
/* Grow the property in front of us. */
|
|
|
|
MARK_PROPERTY_LENGTH(mark) += len;
|
|
}
|
|
else if (backward_prop &&
|
|
text_properties_equal(backward_prop, font, fore, back))
|
|
{
|
|
/* Grow property behind us, point property and offset
|
|
* change. */
|
|
|
|
SET_PROPERTY_MARK (&text->point,
|
|
MARK_PREV_LIST_PTR (mark),
|
|
backward_prop->length);
|
|
|
|
backward_prop->length += len;
|
|
}
|
|
else
|
|
{
|
|
/* Splice a new property into the list. */
|
|
|
|
GList* new_prop = g_list_alloc();
|
|
|
|
new_prop->next = MARK_LIST_PTR(mark);
|
|
new_prop->prev = MARK_PREV_LIST_PTR(mark);
|
|
new_prop->next->prev = new_prop;
|
|
|
|
if (new_prop->prev)
|
|
new_prop->prev->next = new_prop;
|
|
|
|
new_prop->data = new_text_property (font, fore, back, len);
|
|
|
|
SET_PROPERTY_MARK (mark, new_prop, 0);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* In the middle of forward_prop, if properties are equal,
|
|
* just add to its length, else split it into two and splice
|
|
* in a new one. */
|
|
if (text_properties_equal (forward_prop, font, fore, back))
|
|
{
|
|
forward_prop->length += len;
|
|
}
|
|
else
|
|
{
|
|
GList* new_prop = g_list_alloc();
|
|
GList* new_prop_forward = g_list_alloc();
|
|
gint old_length = forward_prop->length;
|
|
GList* next = MARK_NEXT_LIST_PTR(mark);
|
|
|
|
/* Set the new lengths according to where they are split. Construct
|
|
* two new properties. */
|
|
forward_prop->length = MARK_OFFSET(mark);
|
|
|
|
new_prop_forward->data = new_text_property(forward_prop->font->gdk_font,
|
|
fore,
|
|
back,
|
|
old_length - forward_prop->length);
|
|
|
|
new_prop->data = new_text_property(font, fore, back, len);
|
|
|
|
/* Now splice things in. */
|
|
MARK_NEXT_LIST_PTR(mark) = new_prop;
|
|
new_prop->prev = MARK_LIST_PTR(mark);
|
|
|
|
new_prop->next = new_prop_forward;
|
|
new_prop_forward->prev = new_prop;
|
|
|
|
new_prop_forward->next = next;
|
|
|
|
if (next)
|
|
next->prev = new_prop_forward;
|
|
|
|
SET_PROPERTY_MARK (mark, new_prop, 0);
|
|
}
|
|
}
|
|
|
|
while (text->text_properties_end->next)
|
|
text->text_properties_end = text->text_properties_end->next;
|
|
|
|
while (text->text_properties->prev)
|
|
text->text_properties = text->text_properties->prev;
|
|
}
|
|
|
|
static void
|
|
delete_text_property (GtkText* text, guint nchars)
|
|
{
|
|
/* Delete nchars forward from point. */
|
|
TextProperty *prop;
|
|
GList *tmp;
|
|
gint is_first;
|
|
|
|
for(; nchars; nchars -= 1)
|
|
{
|
|
prop = MARK_CURRENT_PROPERTY(&text->point);
|
|
|
|
prop->length -= 1;
|
|
|
|
if (prop->length == 0)
|
|
{
|
|
tmp = MARK_LIST_PTR (&text->point);
|
|
|
|
is_first = tmp == text->text_properties;
|
|
|
|
MARK_LIST_PTR (&text->point) = g_list_remove_link (tmp, tmp);
|
|
text->point.offset = 0;
|
|
|
|
g_mem_chunk_free (text_property_chunk, prop);
|
|
|
|
prop = MARK_CURRENT_PROPERTY (&text->point);
|
|
|
|
if (is_first)
|
|
text->text_properties = MARK_LIST_PTR (&text->point);
|
|
|
|
g_assert (prop->length != 0);
|
|
}
|
|
else if (prop->length == text->point.offset)
|
|
{
|
|
MARK_LIST_PTR (&text->point) = MARK_NEXT_LIST_PTR (&text->point);
|
|
text->point.offset = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
init_properties (GtkText *text)
|
|
{
|
|
if (!text->text_properties)
|
|
{
|
|
text->text_properties = g_list_alloc();
|
|
text->text_properties->next = NULL;
|
|
text->text_properties->prev = NULL;
|
|
text->text_properties->data = new_text_property (text->widget.style->font,
|
|
&text->widget.style->fg[GTK_STATE_NORMAL],
|
|
&text->widget.style->bg[GTK_STATE_NORMAL],
|
|
1);
|
|
text->text_properties_end = text->text_properties;
|
|
|
|
SET_PROPERTY_MARK (&text->point, text->text_properties, 0);
|
|
|
|
text->point.index = 0;
|
|
}
|
|
}
|
|
|
|
|
|
/**********************************************************************/
|
|
/* Property Movement */
|
|
/**********************************************************************/
|
|
|
|
static void
|
|
move_mark_n (GtkPropertyMark* mark, gint n)
|
|
{
|
|
if (n > 0)
|
|
advance_mark_n(mark, n);
|
|
else if (n < 0)
|
|
decrement_mark_n(mark, -n);
|
|
}
|
|
|
|
static void
|
|
advance_mark_n (GtkPropertyMark* mark, gint n)
|
|
{
|
|
gint i;
|
|
|
|
g_assert (n > 0);
|
|
|
|
for (i = 0; i < n; i += 1)
|
|
advance_mark (mark);
|
|
}
|
|
|
|
static void
|
|
advance_mark (GtkPropertyMark* mark)
|
|
{
|
|
TextProperty* prop = MARK_CURRENT_PROPERTY (mark);
|
|
|
|
mark->index += 1;
|
|
|
|
if (prop->length > mark->offset + 1)
|
|
mark->offset += 1;
|
|
else
|
|
{
|
|
mark->property = MARK_NEXT_LIST_PTR (mark);
|
|
mark->offset = 0;
|
|
}
|
|
}
|
|
|
|
static void
|
|
decrement_mark (GtkPropertyMark* mark)
|
|
{
|
|
mark->index -= 1;
|
|
|
|
if (mark->offset > 0)
|
|
mark->offset -= 1;
|
|
else
|
|
{
|
|
mark->property = MARK_PREV_LIST_PTR (mark);
|
|
mark->offset = MARK_CURRENT_PROPERTY (mark)->length - 1;
|
|
}
|
|
}
|
|
|
|
static void
|
|
decrement_mark_n (GtkPropertyMark* mark, gint n)
|
|
{
|
|
gint i;
|
|
|
|
g_assert (n > 0);
|
|
|
|
for (i = 0; i < n; i += 1)
|
|
decrement_mark (mark);
|
|
}
|
|
|
|
static GtkPropertyMark
|
|
find_mark (GtkText* text, guint mark_position)
|
|
{
|
|
return find_mark_near (text, mark_position, &text->point);
|
|
}
|
|
|
|
/* This can be optimized in two ways.
|
|
* First, advances can be made in units of the current TextProperty
|
|
* length, when possible. This will reduce computation and function
|
|
* call overhead.
|
|
*
|
|
* You can also start from the end, what a drag.
|
|
*/
|
|
static GtkPropertyMark
|
|
find_mark_near (GtkText* text, guint mark_position, const GtkPropertyMark* near)
|
|
{
|
|
gint diffa;
|
|
gint diffb;
|
|
|
|
GtkPropertyMark mark;
|
|
|
|
if (!near)
|
|
diffa = mark_position + 1;
|
|
else
|
|
diffa = mark_position - near->index;
|
|
|
|
diffb = mark_position;
|
|
|
|
if (diffa < 0)
|
|
diffa = -diffa;
|
|
|
|
if (diffa <= diffb)
|
|
{
|
|
mark = *near;
|
|
}
|
|
else
|
|
{
|
|
mark.index = 0;
|
|
mark.property = text->text_properties;
|
|
mark.offset = 0;
|
|
}
|
|
|
|
if (mark.index > mark_position)
|
|
{
|
|
while (mark.index > mark_position)
|
|
decrement_mark (&mark);
|
|
}
|
|
else
|
|
{
|
|
while (mark_position > mark.index)
|
|
advance_mark (&mark);
|
|
}
|
|
|
|
return mark;
|
|
}
|
|
|
|
static void
|
|
find_line_containing_point (GtkText* text, guint point)
|
|
{
|
|
GList* cache;
|
|
gint height;
|
|
|
|
text->current_line = NULL;
|
|
|
|
if (!text->line_start_cache->next)
|
|
{
|
|
/* @@@ Its visible, right? */
|
|
text->current_line = text->line_start_cache;
|
|
return;
|
|
}
|
|
|
|
while ( ( (text->first_cut_pixels != 0) &&
|
|
(CACHE_DATA(text->line_start_cache->next).start.index > point) ) ||
|
|
( (text->first_cut_pixels == 0) &&
|
|
(CACHE_DATA(text->line_start_cache).start.index > point) ) )
|
|
{
|
|
scroll_int (text, - SCROLL_PIXELS);
|
|
g_assert (text->line_start_cache->next);
|
|
}
|
|
|
|
TEXT_SHOW (text);
|
|
gdk_window_get_size (text->text_area, NULL, &height);
|
|
|
|
for (cache = text->line_start_cache; cache; cache = cache->next)
|
|
{
|
|
guint lph;
|
|
|
|
if (CACHE_DATA(cache).end.index >= point ||
|
|
LAST_INDEX(text, CACHE_DATA(cache).end))
|
|
{
|
|
text->current_line = cache; /* LOOK HERE, this proc has an
|
|
* important side effect. */
|
|
return;
|
|
}
|
|
|
|
TEXT_SHOW_LINE (text, cache, "cache");
|
|
|
|
lph = pixel_height_of (text, cache->next);
|
|
|
|
while (lph > height || lph == 0)
|
|
{
|
|
TEXT_SHOW_LINE (text, cache, "cache");
|
|
TEXT_SHOW_LINE (text, cache->next, "cache->next");
|
|
scroll_int (text, LINE_HEIGHT(CACHE_DATA(cache->next)));
|
|
lph = pixel_height_of (text, cache->next);
|
|
}
|
|
}
|
|
|
|
g_assert (FALSE); /* Must set text->current_line here */
|
|
}
|
|
|
|
static guint
|
|
pixel_height_of (GtkText* text, GList* cache_line)
|
|
{
|
|
gint pixels = - text->first_cut_pixels;
|
|
GList *cache = text->line_start_cache;
|
|
|
|
while (TRUE) {
|
|
pixels += LINE_HEIGHT (CACHE_DATA(cache));
|
|
|
|
if (cache->data == cache_line->data)
|
|
break;
|
|
|
|
cache = cache->next;
|
|
}
|
|
|
|
return pixels;
|
|
}
|
|
|
|
/**********************************************************************/
|
|
/* Search and Placement */
|
|
/**********************************************************************/
|
|
|
|
static gint
|
|
find_char_width (GtkText* text, const GtkPropertyMark *mark, const TabStopMark *tab_mark)
|
|
{
|
|
gchar ch = TEXT_INDEX (text, mark->index);
|
|
gint16* char_widths = MARK_CURRENT_TEXT_FONT (mark)->char_widths;
|
|
|
|
if (ch == '\t')
|
|
{
|
|
return tab_mark->to_next_tab * char_widths[' '];
|
|
}
|
|
else
|
|
{
|
|
return char_widths[ch & 0xff];
|
|
}
|
|
}
|
|
|
|
static void
|
|
advance_tab_mark (GtkText* text, TabStopMark* tab_mark, gchar ch)
|
|
{
|
|
if (tab_mark->to_next_tab == 1 || ch == '\t')
|
|
{
|
|
if (tab_mark->tab_stops->next)
|
|
{
|
|
tab_mark->tab_stops = tab_mark->tab_stops->next;
|
|
tab_mark->to_next_tab = (gulong) tab_mark->tab_stops->data;
|
|
}
|
|
else
|
|
{
|
|
tab_mark->to_next_tab = text->default_tab_width;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
tab_mark->to_next_tab -= 1;
|
|
}
|
|
}
|
|
|
|
static void
|
|
advance_tab_mark_n (GtkText* text, TabStopMark* tab_mark, gint n)
|
|
/* No tabs! */
|
|
{
|
|
while (n--)
|
|
advance_tab_mark (text, tab_mark, 0);
|
|
}
|
|
|
|
static void
|
|
find_cursor_at_line (GtkText* text, const LineParams* start_line, gint pixel_height)
|
|
{
|
|
gchar ch;
|
|
|
|
GtkPropertyMark mark = start_line->start;
|
|
TabStopMark tab_mark = start_line->tab_cont.tab_start;
|
|
gint pixel_width = LINE_START_PIXEL (*start_line);
|
|
|
|
while (mark.index < text->cursor_mark.index)
|
|
{
|
|
pixel_width += find_char_width (text, &mark, &tab_mark);
|
|
|
|
advance_tab_mark (text, &tab_mark, TEXT_INDEX(text, mark.index));
|
|
advance_mark (&mark);
|
|
}
|
|
|
|
text->cursor_pos_x = pixel_width;
|
|
text->cursor_pos_y = pixel_height;
|
|
text->cursor_char_offset = start_line->font_descent;
|
|
text->cursor_mark = mark;
|
|
|
|
ch = TEXT_INDEX (text, mark.index);
|
|
|
|
if (!isspace(ch))
|
|
text->cursor_char = ch;
|
|
else
|
|
text->cursor_char = 0;
|
|
}
|
|
|
|
static void
|
|
find_cursor (GtkText* text)
|
|
{
|
|
if (!text->has_cursor)
|
|
return;
|
|
|
|
find_line_containing_point (text, text->cursor_mark.index);
|
|
|
|
g_assert (text->cursor_mark.index >= text->first_line_start_index);
|
|
|
|
if (text->current_line)
|
|
find_cursor_at_line (text,
|
|
&CACHE_DATA(text->current_line),
|
|
pixel_height_of(text, text->current_line));
|
|
}
|
|
|
|
static void
|
|
mouse_click_1_at_line (GtkText *text, const LineParams* lp,
|
|
guint line_pixel_height,
|
|
gint button_x)
|
|
{
|
|
GtkPropertyMark mark = lp->start;
|
|
TabStopMark tab_mark = lp->tab_cont.tab_start;
|
|
|
|
guint char_width = find_char_width(text, &mark, &tab_mark);
|
|
guint pixel_width = LINE_START_PIXEL (*lp) + (char_width+1)/2;
|
|
|
|
text->cursor_pos_y = line_pixel_height;
|
|
|
|
for (;;)
|
|
{
|
|
gchar ch = TEXT_INDEX (text, mark.index);
|
|
|
|
if (button_x < pixel_width || mark.index == lp->end.index)
|
|
{
|
|
text->cursor_pos_x = pixel_width - (char_width+1)/2;
|
|
text->cursor_mark = mark;
|
|
text->cursor_char_offset = lp->font_descent;
|
|
|
|
if (!isspace(ch))
|
|
text->cursor_char = ch;
|
|
else
|
|
text->cursor_char = 0;
|
|
|
|
break;
|
|
}
|
|
|
|
advance_tab_mark (text, &tab_mark, ch);
|
|
advance_mark (&mark);
|
|
|
|
pixel_width += char_width/2;
|
|
|
|
char_width = find_char_width (text, &mark, &tab_mark);
|
|
|
|
pixel_width += (char_width+1)/2;
|
|
}
|
|
}
|
|
|
|
static void
|
|
mouse_click_1 (GtkText* text, GdkEventButton *event)
|
|
{
|
|
if (text->is_editable)
|
|
{
|
|
gint pixel_height;
|
|
GList* cache = text->line_start_cache;
|
|
|
|
g_assert (cache);
|
|
|
|
pixel_height = - text->first_cut_pixels;
|
|
|
|
text->has_cursor = 1;
|
|
|
|
for (; cache; cache = cache->next)
|
|
{
|
|
pixel_height += LINE_HEIGHT(CACHE_DATA(cache));
|
|
|
|
if (event->y < pixel_height || !cache->next)
|
|
{
|
|
mouse_click_1_at_line (text, &CACHE_DATA(cache), pixel_height, event->x);
|
|
|
|
find_cursor (text);
|
|
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**********************************************************************/
|
|
/* Cache Manager */
|
|
/**********************************************************************/
|
|
|
|
static void
|
|
free_cache (GtkText* text)
|
|
{
|
|
GList* cache = text->line_start_cache;
|
|
|
|
for (; cache; cache = cache->next)
|
|
g_mem_chunk_free (params_mem_chunk, cache->data);
|
|
|
|
g_list_free (text->line_start_cache);
|
|
|
|
text->line_start_cache = NULL;
|
|
}
|
|
|
|
static GList*
|
|
remove_cache_line (GtkText* text, GList* member)
|
|
{
|
|
if (member == text->line_start_cache)
|
|
{
|
|
if (text->line_start_cache)
|
|
text->line_start_cache = text->line_start_cache->next;
|
|
return text->line_start_cache;
|
|
}
|
|
else
|
|
{
|
|
GList *list = member->prev;
|
|
|
|
list->next = list->next->next;
|
|
if (list->next)
|
|
list->next->prev = list;
|
|
|
|
member->next = NULL;
|
|
g_mem_chunk_free (params_mem_chunk, member->data);
|
|
g_list_free (member);
|
|
|
|
return list->next;
|
|
}
|
|
}
|
|
|
|
/**********************************************************************/
|
|
/* Key Motion */
|
|
/**********************************************************************/
|
|
|
|
static void
|
|
move_cursor_buffer_ver (GtkText *text, int dir)
|
|
{
|
|
if (dir > 0)
|
|
scroll_int (text, text->vadj->upper);
|
|
else
|
|
scroll_int (text, - text->vadj->value);
|
|
}
|
|
|
|
static void
|
|
move_cursor_page_ver (GtkText *text, int dir)
|
|
{
|
|
scroll_int (text, dir * text->vadj->page_increment);
|
|
}
|
|
|
|
static void
|
|
move_cursor_ver (GtkText *text, int count)
|
|
{
|
|
gint i;
|
|
GtkPropertyMark mark;
|
|
gint offset;
|
|
|
|
if (!text->has_cursor)
|
|
{
|
|
scroll_int (text, count * KEY_SCROLL_PIXELS);
|
|
return;
|
|
}
|
|
|
|
mark = find_this_line_start_mark (text, text->cursor_mark.index, &text->cursor_mark);
|
|
offset = text->cursor_mark.index - mark.index;
|
|
|
|
if (offset > text->cursor_virtual_x)
|
|
text->cursor_virtual_x = offset;
|
|
|
|
if (count < 0)
|
|
{
|
|
if (mark.index == 0)
|
|
return;
|
|
|
|
decrement_mark (&mark);
|
|
mark = find_this_line_start_mark (text, mark.index, &mark);
|
|
}
|
|
else
|
|
{
|
|
mark = text->cursor_mark;
|
|
|
|
while (!LAST_INDEX(text, mark) && TEXT_INDEX(text, mark.index) != LINE_DELIM)
|
|
advance_mark (&mark);
|
|
|
|
if (LAST_INDEX(text, mark))
|
|
return;
|
|
|
|
advance_mark (&mark);
|
|
}
|
|
|
|
for (i=0; i < text->cursor_virtual_x; i += 1, advance_mark(&mark))
|
|
if (LAST_INDEX(text, mark) || TEXT_INDEX(text, mark.index) == LINE_DELIM)
|
|
break;
|
|
|
|
undraw_cursor (text, FALSE);
|
|
|
|
text->cursor_mark = mark;
|
|
|
|
find_cursor (text);
|
|
|
|
draw_cursor (text, FALSE);
|
|
}
|
|
|
|
static void
|
|
move_cursor_hor (GtkText *text, int count)
|
|
{
|
|
/* count should be +-1. */
|
|
if (!text->has_cursor)
|
|
return;
|
|
|
|
if ( (count > 0 && text->cursor_mark.index + count > TEXT_LENGTH(text)) ||
|
|
(count < 0 && text->cursor_mark.index < (- count)) ||
|
|
(count == 0) )
|
|
return;
|
|
|
|
text->cursor_virtual_x = 0;
|
|
|
|
undraw_cursor (text, FALSE);
|
|
|
|
move_mark_n (&text->cursor_mark, count);
|
|
|
|
find_cursor (text);
|
|
|
|
draw_cursor (text, FALSE);
|
|
}
|
|
|
|
/**********************************************************************/
|
|
/* Scrolling */
|
|
/**********************************************************************/
|
|
|
|
static void
|
|
adjust_adj (GtkText* text, GtkAdjustment* adj)
|
|
{
|
|
gint height;
|
|
|
|
gdk_window_get_size (text->text_area, NULL, &height);
|
|
|
|
adj->step_increment = MIN (adj->upper, (float) SCROLL_PIXELS);
|
|
adj->page_increment = MIN (adj->upper, height - (float) KEY_SCROLL_PIXELS);
|
|
adj->page_size = MIN (adj->upper, height);
|
|
adj->value = MIN (adj->value, adj->upper - adj->page_size);
|
|
adj->value = MAX (adj->value, 0.0);
|
|
|
|
gtk_signal_emit_by_name (GTK_OBJECT (adj), "changed");
|
|
}
|
|
|
|
static gint
|
|
set_vertical_scroll_iterator (GtkText* text, LineParams* lp, void* data)
|
|
{
|
|
gint *pixel_count = (gint*) data;
|
|
|
|
if (text->first_line_start_index == lp->start.index)
|
|
text->vadj->value = (float) *pixel_count;
|
|
|
|
*pixel_count += LINE_HEIGHT (*lp);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gint
|
|
set_vertical_scroll_find_iterator (GtkText* text, LineParams* lp, void* data)
|
|
{
|
|
SetVerticalScrollData *svdata = (SetVerticalScrollData *) data;
|
|
gint return_val;
|
|
|
|
if (svdata->last_didnt_wrap)
|
|
svdata->last_line_start = lp->start.index;
|
|
|
|
if (svdata->pixel_height <= (gint) text->vadj->value &&
|
|
svdata->pixel_height + LINE_HEIGHT(*lp) > (gint) text->vadj->value)
|
|
{
|
|
svdata->mark = lp->start;
|
|
|
|
text->first_cut_pixels = (gint)text->vadj->value - svdata->pixel_height;
|
|
text->first_onscreen_ver_pixel = svdata->pixel_height;
|
|
text->first_line_start_index = svdata->last_line_start;
|
|
|
|
return_val = TRUE;
|
|
}
|
|
else
|
|
{
|
|
svdata->pixel_height += LINE_HEIGHT (*lp);
|
|
|
|
return_val = FALSE;
|
|
}
|
|
|
|
if (!lp->wraps)
|
|
svdata->last_didnt_wrap = TRUE;
|
|
else
|
|
svdata->last_didnt_wrap = FALSE;
|
|
|
|
return return_val;
|
|
}
|
|
|
|
static GtkPropertyMark
|
|
set_vertical_scroll (GtkText* text)
|
|
{
|
|
GtkPropertyMark mark = find_mark (text, 0);
|
|
SetVerticalScrollData data;
|
|
gint height;
|
|
gint pixel_count = 0;
|
|
gint orig_value;
|
|
|
|
line_params_iterate (text, &mark, NULL, FALSE, &pixel_count, set_vertical_scroll_iterator);
|
|
|
|
text->vadj->upper = (float) pixel_count;
|
|
orig_value = (gint) text->vadj->value;
|
|
|
|
gdk_window_get_size (text->text_area, NULL, &height);
|
|
|
|
text->vadj->step_increment = MIN (text->vadj->upper, (float) SCROLL_PIXELS);
|
|
text->vadj->page_increment = MIN (text->vadj->upper, height - (float) KEY_SCROLL_PIXELS);
|
|
text->vadj->page_size = MIN (text->vadj->upper, height);
|
|
text->vadj->value = MIN (text->vadj->value, text->vadj->upper - text->vadj->page_size);
|
|
text->vadj->value = MAX (text->vadj->value, 0.0);
|
|
|
|
text->last_ver_value = (gint)text->vadj->value;
|
|
text->first_cut_pixels = 0;
|
|
|
|
gtk_signal_emit_by_name (GTK_OBJECT (text->vadj), "changed");
|
|
|
|
if (text->vadj->value != orig_value)
|
|
{
|
|
/* We got clipped, and don't really know which line to put first. */
|
|
data.pixel_height = 0;
|
|
data.last_didnt_wrap = TRUE;
|
|
|
|
line_params_iterate (text, &mark, NULL,
|
|
FALSE, &data,
|
|
set_vertical_scroll_find_iterator);
|
|
|
|
return data.mark;
|
|
}
|
|
else
|
|
{
|
|
return find_mark (text, text->first_line_start_index);
|
|
}
|
|
}
|
|
|
|
static void
|
|
scroll_int (GtkText* text, gint diff)
|
|
{
|
|
gfloat upper;
|
|
|
|
text->vadj->value += diff;
|
|
|
|
upper = text->vadj->upper - text->vadj->page_size;
|
|
text->vadj->value = MIN (text->vadj->value, upper);
|
|
text->vadj->value = MAX (text->vadj->value, 0.0);
|
|
|
|
gtk_signal_emit_by_name (GTK_OBJECT (text->vadj), "value_changed");
|
|
}
|
|
|
|
static void
|
|
process_exposes (GtkText *text)
|
|
{
|
|
GdkEvent *event;
|
|
|
|
/* Make sure graphics expose events are processed before scrolling
|
|
* again */
|
|
|
|
while ((event = gdk_event_get_graphics_expose (text->text_area)) != NULL)
|
|
{
|
|
gtk_widget_event (GTK_WIDGET (text), event);
|
|
if (event->expose.count == 0)
|
|
{
|
|
gdk_event_free (event);
|
|
break;
|
|
}
|
|
gdk_event_free (event);
|
|
}
|
|
}
|
|
|
|
static gint last_visible_line_height (GtkText* text)
|
|
{
|
|
GList *cache = text->line_start_cache;
|
|
gint height;
|
|
|
|
gdk_window_get_size (text->text_area, NULL, &height);
|
|
|
|
for (; cache->next; cache = cache->next)
|
|
if (pixel_height_of(text, cache->next) > height)
|
|
break;
|
|
|
|
if (cache)
|
|
return pixel_height_of(text, cache) - 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static gint first_visible_line_height (GtkText* text)
|
|
{
|
|
if (text->first_cut_pixels)
|
|
return pixel_height_of(text, text->line_start_cache) + 1;
|
|
else
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
scroll_down (GtkText* text, gint diff0)
|
|
{
|
|
GdkRectangle rect;
|
|
gint real_diff = 0;
|
|
gint width, height;
|
|
|
|
text->first_onscreen_ver_pixel += diff0;
|
|
|
|
while (diff0-- > 0)
|
|
{
|
|
g_assert (text->line_start_cache &&
|
|
text->line_start_cache->next);
|
|
|
|
if (text->first_cut_pixels < LINE_HEIGHT(CACHE_DATA(text->line_start_cache)) - 1)
|
|
{
|
|
text->first_cut_pixels += 1;
|
|
}
|
|
else
|
|
{
|
|
text->first_cut_pixels = 0;
|
|
|
|
text->line_start_cache = text->line_start_cache->next;
|
|
|
|
text->first_line_start_index =
|
|
CACHE_DATA(text->line_start_cache).start.index;
|
|
|
|
if (!text->line_start_cache->next)
|
|
fetch_lines_forward (text, 1);
|
|
}
|
|
|
|
real_diff += 1;
|
|
}
|
|
|
|
gdk_window_get_size (text->text_area, &width, &height);
|
|
if (height > real_diff)
|
|
gdk_draw_pixmap (text->text_area,
|
|
text->gc,
|
|
text->text_area,
|
|
0,
|
|
real_diff,
|
|
0,
|
|
0,
|
|
width,
|
|
height - real_diff);
|
|
|
|
rect.x = 0;
|
|
rect.y = MAX (0, height - real_diff);
|
|
rect.width = width;
|
|
rect.height = MIN (height, real_diff);
|
|
|
|
expose_text (text, &rect, FALSE);
|
|
gtk_text_draw_focus ( (GtkWidget *) text);
|
|
|
|
if (text->current_line)
|
|
{
|
|
gint cursor_min;
|
|
|
|
text->cursor_pos_y -= real_diff;
|
|
cursor_min = drawn_cursor_min(text);
|
|
|
|
if (cursor_min < 0)
|
|
{
|
|
GdkEventButton button;
|
|
|
|
button.x = text->cursor_pos_x;
|
|
button.y = first_visible_line_height (text);
|
|
|
|
mouse_click_1 (text, &button);
|
|
}
|
|
}
|
|
|
|
if (height > real_diff)
|
|
process_exposes (text);
|
|
}
|
|
|
|
static void
|
|
scroll_up (GtkText* text, gint diff0)
|
|
{
|
|
gint real_diff = 0;
|
|
GdkRectangle rect;
|
|
gint width, height;
|
|
|
|
text->first_onscreen_ver_pixel += diff0;
|
|
|
|
while (diff0++ < 0)
|
|
{
|
|
g_assert (text->line_start_cache);
|
|
|
|
if (text->first_cut_pixels > 0)
|
|
{
|
|
text->first_cut_pixels -= 1;
|
|
}
|
|
else
|
|
{
|
|
if (!text->line_start_cache->prev)
|
|
fetch_lines_backward (text);
|
|
|
|
text->line_start_cache = text->line_start_cache->prev;
|
|
|
|
text->first_line_start_index =
|
|
CACHE_DATA(text->line_start_cache).start.index;
|
|
|
|
text->first_cut_pixels = LINE_HEIGHT(CACHE_DATA(text->line_start_cache)) - 1;
|
|
}
|
|
|
|
real_diff += 1;
|
|
}
|
|
|
|
gdk_window_get_size (text->text_area, &width, &height);
|
|
if (height > real_diff)
|
|
gdk_draw_pixmap (text->text_area,
|
|
text->gc,
|
|
text->text_area,
|
|
0,
|
|
0,
|
|
0,
|
|
real_diff,
|
|
width,
|
|
height - real_diff);
|
|
|
|
rect.x = 0;
|
|
rect.y = 0;
|
|
rect.width = width;
|
|
rect.height = MIN (height, real_diff);
|
|
|
|
expose_text (text, &rect, FALSE);
|
|
gtk_text_draw_focus ( (GtkWidget *) text);
|
|
|
|
if (text->current_line)
|
|
{
|
|
gint cursor_max;
|
|
gint height;
|
|
|
|
text->cursor_pos_y += real_diff;
|
|
cursor_max = drawn_cursor_max(text);
|
|
gdk_window_get_size (text->text_area, NULL, &height);
|
|
|
|
if (cursor_max >= height)
|
|
{
|
|
GdkEventButton button;
|
|
|
|
button.x = text->cursor_pos_x;
|
|
button.y = last_visible_line_height(text);
|
|
|
|
mouse_click_1 (text, &button);
|
|
}
|
|
}
|
|
|
|
if (height > real_diff)
|
|
process_exposes (text);
|
|
}
|
|
|
|
/**********************************************************************/
|
|
/* Display Code */
|
|
/**********************************************************************/
|
|
|
|
/* Assumes mark starts a line. Calculates the height, width, and
|
|
* displayable character count of a single DISPLAYABLE line. That
|
|
* means that in line-wrap mode, this does may not compute the
|
|
* properties of an entire line. */
|
|
static LineParams
|
|
find_line_params (GtkText* text,
|
|
const GtkPropertyMark* mark,
|
|
const PrevTabCont *tab_cont,
|
|
PrevTabCont *next_cont)
|
|
{
|
|
LineParams lp;
|
|
TabStopMark tab_mark = tab_cont->tab_start;
|
|
guint max_display_pixels;
|
|
gchar ch;
|
|
gint ch_width;
|
|
GdkFont *font;
|
|
|
|
gdk_window_get_size (text->text_area, (gint*) &max_display_pixels, NULL);
|
|
max_display_pixels -= LINE_WRAP_ROOM;
|
|
|
|
lp.wraps = 0;
|
|
lp.tab_cont = *tab_cont;
|
|
lp.start = *mark;
|
|
lp.end = *mark;
|
|
lp.pixel_width = tab_cont->pixel_offset;
|
|
lp.displayable_chars = 0;
|
|
lp.font_ascent = 0;
|
|
lp.font_descent = 0;
|
|
|
|
init_tab_cont (text, next_cont);
|
|
|
|
while (!LAST_INDEX(text, lp.end))
|
|
{
|
|
g_assert (lp.end.property);
|
|
|
|
ch = TEXT_INDEX (text, lp.end.index);
|
|
font = MARK_CURRENT_FONT (&lp.end);
|
|
|
|
if (ch == LINE_DELIM)
|
|
{
|
|
/* Newline doesn't count in computation of line height, even
|
|
* if its in a bigger font than the rest of the line. Unless,
|
|
* of course, there are no other characters. */
|
|
|
|
if (!lp.font_ascent && !lp.font_descent)
|
|
{
|
|
lp.font_ascent = font->ascent;
|
|
lp.font_descent = font->descent;
|
|
}
|
|
|
|
lp.tab_cont_next = *next_cont;
|
|
|
|
return lp;
|
|
}
|
|
|
|
ch_width = find_char_width (text, &lp.end, &tab_mark);
|
|
|
|
if (ch_width + lp.pixel_width > max_display_pixels)
|
|
{
|
|
lp.wraps = 1;
|
|
|
|
if (text->line_wrap)
|
|
{
|
|
next_cont->tab_start = tab_mark;
|
|
next_cont->pixel_offset = 0;
|
|
|
|
if (ch == '\t')
|
|
{
|
|
/* Here's the tough case, a tab is wrapping. */
|
|
gint pixels_avail = max_display_pixels - lp.pixel_width;
|
|
gint space_width = MARK_CURRENT_TEXT_FONT(&lp.end)->char_widths[' '];
|
|
gint spaces_avail = pixels_avail / space_width;
|
|
|
|
if (spaces_avail == 0)
|
|
{
|
|
decrement_mark (&lp.end);
|
|
}
|
|
else
|
|
{
|
|
advance_tab_mark (text, &next_cont->tab_start, '\t');
|
|
next_cont->pixel_offset = space_width * (tab_mark.to_next_tab -
|
|
spaces_avail);
|
|
lp.displayable_chars += 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Don't include this character, it will wrap. */
|
|
decrement_mark (&lp.end);
|
|
}
|
|
|
|
lp.tab_cont_next = *next_cont;
|
|
|
|
return lp;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
lp.displayable_chars += 1;
|
|
}
|
|
|
|
lp.font_ascent = MAX (font->ascent, lp.font_ascent);
|
|
lp.font_descent = MAX (font->descent, lp.font_descent);
|
|
lp.pixel_width += ch_width;
|
|
|
|
advance_mark(&lp.end);
|
|
advance_tab_mark (text, &tab_mark, ch);
|
|
}
|
|
|
|
if (LAST_INDEX(text, lp.start))
|
|
{
|
|
/* Special case, empty last line. */
|
|
font = MARK_CURRENT_FONT (&lp.end);
|
|
|
|
lp.font_ascent = font->ascent;
|
|
lp.font_descent = font->descent;
|
|
}
|
|
|
|
lp.tab_cont_next = *next_cont;
|
|
|
|
return lp;
|
|
}
|
|
|
|
static void
|
|
expand_scratch_buffer (GtkText* text, guint len)
|
|
{
|
|
if (len >= text->scratch_buffer_len)
|
|
{
|
|
guint i = 1;
|
|
|
|
while (i <= len && i < MIN_GAP_SIZE) i <<= 1;
|
|
|
|
if (text->scratch_buffer)
|
|
text->scratch_buffer = g_new (guchar, i);
|
|
else
|
|
text->scratch_buffer = g_realloc (text->scratch_buffer, i);
|
|
|
|
text->scratch_buffer_len = i;
|
|
}
|
|
}
|
|
|
|
static void
|
|
draw_line (GtkText* text,
|
|
gint pixel_start_height,
|
|
LineParams* lp)
|
|
{
|
|
GdkGCValues gc_values;
|
|
gint i;
|
|
gint len = 0;
|
|
guint running_offset = lp->tab_cont.pixel_offset;
|
|
guchar* buffer;
|
|
|
|
GtkPropertyMark mark = lp->start;
|
|
TabStopMark tab_mark = lp->tab_cont.tab_start;
|
|
gint pixel_height = pixel_start_height + lp->font_ascent;
|
|
guint chars = lp->displayable_chars;
|
|
|
|
/* First provide a contiguous segment of memory. This makes reading
|
|
* the code below *much* easier, and only incurs the cost of copying
|
|
* when the line being displayed spans the gap. */
|
|
if (mark.index <= text->gap_position &&
|
|
mark.index + chars > text->gap_position)
|
|
{
|
|
expand_scratch_buffer (text, chars);
|
|
|
|
for (i = 0; i < chars; i += 1)
|
|
text->scratch_buffer[i] = TEXT_INDEX(text, mark.index + i);
|
|
|
|
buffer = text->scratch_buffer;
|
|
}
|
|
else
|
|
{
|
|
if (mark.index >= text->gap_position)
|
|
buffer = text->text + mark.index + text->gap_size;
|
|
else
|
|
buffer = text->text + mark.index;
|
|
}
|
|
|
|
if (running_offset > 0 && MARK_CURRENT_BACK (&mark))
|
|
{
|
|
gdk_gc_set_foreground (text->gc, MARK_CURRENT_BACK (&mark));
|
|
|
|
gdk_draw_rectangle (text->text_area,
|
|
text->gc,
|
|
TRUE,
|
|
0,
|
|
pixel_start_height,
|
|
running_offset,
|
|
LINE_HEIGHT (*lp));
|
|
}
|
|
|
|
for (; chars > 0; chars -= len, buffer += len, len = 0)
|
|
{
|
|
if (buffer[0] != '\t')
|
|
{
|
|
guchar* next_tab = memchr (buffer, '\t', chars);
|
|
gint pixel_width;
|
|
GdkFont *font;
|
|
|
|
len = MIN (MARK_CURRENT_PROPERTY (&mark)->length - mark.offset, chars);
|
|
|
|
if (next_tab)
|
|
len = MIN (len, next_tab - buffer);
|
|
|
|
font = MARK_CURRENT_PROPERTY (&mark)->font->gdk_font;
|
|
if (font->type == GDK_FONT_FONT)
|
|
{
|
|
gdk_gc_set_font (text->gc, font);
|
|
gdk_gc_get_values (text->gc, &gc_values);
|
|
pixel_width = gdk_text_width (gc_values.font,
|
|
(gchar*) buffer, len);
|
|
}
|
|
else
|
|
pixel_width = gdk_text_width (font, (gchar*) buffer, len);
|
|
|
|
if (MARK_CURRENT_BACK (&mark))
|
|
{
|
|
gdk_gc_set_foreground (text->gc, MARK_CURRENT_BACK (&mark));
|
|
|
|
gdk_draw_rectangle (text->text_area,
|
|
text->gc,
|
|
TRUE,
|
|
running_offset,
|
|
pixel_start_height,
|
|
pixel_width,
|
|
LINE_HEIGHT(*lp));
|
|
}
|
|
|
|
gdk_gc_set_foreground (text->gc, MARK_CURRENT_FORE (&mark));
|
|
|
|
gdk_draw_text (text->text_area, MARK_CURRENT_FONT (&mark),
|
|
text->gc,
|
|
running_offset,
|
|
pixel_height,
|
|
(gchar*) buffer,
|
|
len);
|
|
|
|
running_offset += pixel_width;
|
|
|
|
advance_tab_mark_n (text, &tab_mark, len);
|
|
}
|
|
else
|
|
{
|
|
len = 1;
|
|
|
|
if (MARK_CURRENT_BACK (&mark))
|
|
{
|
|
gint pixels_remaining;
|
|
gint space_width;
|
|
gint spaces_avail;
|
|
|
|
gdk_window_get_size (text->text_area, &pixels_remaining, NULL);
|
|
pixels_remaining -= (LINE_WRAP_ROOM + running_offset);
|
|
|
|
space_width = MARK_CURRENT_TEXT_FONT(&mark)->char_widths[' '];
|
|
|
|
spaces_avail = pixels_remaining / space_width;
|
|
spaces_avail = MIN (spaces_avail, tab_mark.to_next_tab);
|
|
|
|
gdk_gc_set_foreground (text->gc, MARK_CURRENT_BACK (&mark));
|
|
|
|
gdk_draw_rectangle (text->text_area,
|
|
text->gc,
|
|
TRUE,
|
|
running_offset,
|
|
pixel_start_height,
|
|
spaces_avail * space_width,
|
|
LINE_HEIGHT (*lp));
|
|
}
|
|
|
|
running_offset += tab_mark.to_next_tab *
|
|
MARK_CURRENT_TEXT_FONT(&mark)->char_widths[' '];
|
|
|
|
advance_tab_mark (text, &tab_mark, '\t');
|
|
}
|
|
|
|
advance_mark_n (&mark, len);
|
|
}
|
|
}
|
|
|
|
static void
|
|
draw_line_wrap (GtkText* text, guint height /* baseline height */)
|
|
{
|
|
gint width;
|
|
GdkPixmap *bitmap;
|
|
gint bitmap_width;
|
|
gint bitmap_height;
|
|
|
|
if (text->line_wrap)
|
|
{
|
|
bitmap = text->line_wrap_bitmap;
|
|
bitmap_width = line_wrap_width;
|
|
bitmap_height = line_wrap_height;
|
|
}
|
|
else
|
|
{
|
|
bitmap = text->line_arrow_bitmap;
|
|
bitmap_width = line_arrow_width;
|
|
bitmap_height = line_arrow_height;
|
|
}
|
|
|
|
gdk_window_get_size (text->text_area, &width, NULL);
|
|
width -= LINE_WRAP_ROOM;
|
|
|
|
gdk_gc_set_stipple (text->gc,
|
|
bitmap);
|
|
|
|
gdk_gc_set_fill (text->gc, GDK_STIPPLED);
|
|
|
|
gdk_gc_set_foreground (text->gc, &text->widget.style->fg[GTK_STATE_NORMAL]);
|
|
|
|
gdk_gc_set_ts_origin (text->gc,
|
|
width + 1,
|
|
height - bitmap_height - 1);
|
|
|
|
gdk_draw_rectangle (text->text_area,
|
|
text->gc,
|
|
TRUE,
|
|
width + 1,
|
|
height - bitmap_height - 1 /* one pixel above the baseline. */,
|
|
bitmap_width,
|
|
bitmap_height);
|
|
|
|
gdk_gc_set_ts_origin (text->gc, 0, 0);
|
|
|
|
gdk_gc_set_fill (text->gc, GDK_SOLID);
|
|
}
|
|
|
|
static void
|
|
undraw_cursor (GtkText* text, gint absolute)
|
|
{
|
|
TDEBUG (("in undraw_cursor\n"));
|
|
|
|
if (absolute)
|
|
text->cursor_drawn_level = 0;
|
|
|
|
if (text->has_cursor && (text->cursor_drawn_level ++ == 0))
|
|
{
|
|
GdkFont* font;
|
|
|
|
g_assert(text->cursor_mark.property);
|
|
|
|
font = MARK_CURRENT_FONT(&text->cursor_mark);
|
|
|
|
if (text->widget.style->bg_pixmap[GTK_STATE_NORMAL])
|
|
{
|
|
GdkRectangle rect;
|
|
|
|
rect.x = text->cursor_pos_x;
|
|
rect.y = text->cursor_pos_y - text->cursor_char_offset - font->ascent;
|
|
rect.width = 1;
|
|
rect.height = font->ascent + 1; /* @@@ I add one here because draw_line is inclusive, right? */
|
|
|
|
clear_area (text, &rect);
|
|
}
|
|
else
|
|
{
|
|
if (MARK_CURRENT_BACK (&text->cursor_mark))
|
|
gdk_gc_set_foreground (text->gc, MARK_CURRENT_BACK (&text->cursor_mark));
|
|
else
|
|
gdk_gc_set_foreground (text->gc, &text->widget.style->bg[GTK_STATE_NORMAL]);
|
|
|
|
gdk_draw_line (text->text_area, text->gc, text->cursor_pos_x,
|
|
text->cursor_pos_y - text->cursor_char_offset, text->cursor_pos_x,
|
|
text->cursor_pos_y - text->cursor_char_offset - font->ascent);
|
|
}
|
|
|
|
if (text->cursor_char)
|
|
{
|
|
if (font->type == GDK_FONT_FONT)
|
|
gdk_gc_set_font (text->gc, font);
|
|
|
|
gdk_gc_set_foreground (text->gc, MARK_CURRENT_FORE (&text->cursor_mark));
|
|
|
|
gdk_draw_text (text->text_area, font,
|
|
text->gc,
|
|
text->cursor_pos_x,
|
|
text->cursor_pos_y - text->cursor_char_offset,
|
|
&text->cursor_char,
|
|
1);
|
|
}
|
|
}
|
|
}
|
|
|
|
static gint
|
|
drawn_cursor_min (GtkText* text)
|
|
{
|
|
if (text->has_cursor)
|
|
{
|
|
GdkFont* font;
|
|
|
|
g_assert(text->cursor_mark.property);
|
|
|
|
font = MARK_CURRENT_FONT(&text->cursor_mark);
|
|
|
|
return text->cursor_pos_y - text->cursor_char_offset - font->ascent;
|
|
}
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static gint
|
|
drawn_cursor_max (GtkText* text)
|
|
{
|
|
if (text->has_cursor)
|
|
{
|
|
GdkFont* font;
|
|
|
|
g_assert(text->cursor_mark.property);
|
|
|
|
font = MARK_CURRENT_FONT(&text->cursor_mark);
|
|
|
|
return text->cursor_pos_y - text->cursor_char_offset;
|
|
}
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
draw_cursor (GtkText* text, gint absolute)
|
|
{
|
|
TDEBUG (("in draw_cursor\n"));
|
|
|
|
if (absolute)
|
|
text->cursor_drawn_level = 1;
|
|
|
|
if (text->has_cursor && (--text->cursor_drawn_level == 0))
|
|
{
|
|
GdkFont* font;
|
|
|
|
g_assert (text->cursor_mark.property);
|
|
|
|
font = MARK_CURRENT_FONT (&text->cursor_mark);
|
|
|
|
gdk_gc_set_foreground (text->gc, &text->widget.style->fg[GTK_STATE_NORMAL]);
|
|
|
|
gdk_draw_line (text->text_area, text->gc, text->cursor_pos_x,
|
|
text->cursor_pos_y - text->cursor_char_offset,
|
|
text->cursor_pos_x,
|
|
text->cursor_pos_y - text->cursor_char_offset - font->ascent);
|
|
}
|
|
}
|
|
|
|
static void
|
|
clear_area (GtkText *text, GdkRectangle *area)
|
|
{
|
|
if (text->widget.style->bg_pixmap[GTK_STATE_NORMAL])
|
|
{
|
|
gint width, height;
|
|
gint x = area->x, y = area->y;
|
|
gint xorig, yorig;
|
|
|
|
gdk_window_get_size (text->widget.style->bg_pixmap[GTK_STATE_NORMAL], &width, &height);
|
|
|
|
yorig = - text->first_onscreen_ver_pixel;
|
|
xorig = - text->first_onscreen_hor_pixel;
|
|
|
|
for (y = area->y; y < area->y + area->height; )
|
|
{
|
|
gint yoff = (y - yorig) % height;
|
|
gint yw = MIN(height - yoff, (area->y + area->height) - y);
|
|
|
|
for (x = area->x; x < area->x + area->width; )
|
|
{
|
|
gint xoff = (x - xorig) % width;
|
|
gint xw = MIN(width - xoff, (area->x + area->width) - x);
|
|
|
|
gdk_draw_pixmap (text->text_area,
|
|
text->gc,
|
|
text->widget.style->bg_pixmap[GTK_STATE_NORMAL],
|
|
xoff,
|
|
yoff,
|
|
x,
|
|
y,
|
|
xw,
|
|
yw);
|
|
|
|
x += width - xoff;
|
|
}
|
|
y += height - yoff;
|
|
}
|
|
}
|
|
else
|
|
gdk_window_clear_area (text->text_area, area->x, area->y, area->width, area->height);
|
|
}
|
|
|
|
static void
|
|
expose_text (GtkText* text, GdkRectangle *area, gboolean cursor)
|
|
{
|
|
GList *cache = text->line_start_cache;
|
|
gint pixels = - text->first_cut_pixels;
|
|
gint min_y = area->y;
|
|
gint max_y = area->y + area->height;
|
|
gint height;
|
|
|
|
gdk_window_get_size (text->text_area, NULL, &height);
|
|
max_y = MIN (max_y, height);
|
|
|
|
TDEBUG (("in expose x=%d y=%d w=%d h=%d\n", area->x, area->y, area->width, area->height));
|
|
|
|
clear_area (text, area);
|
|
|
|
for (; pixels < height; cache = cache->next)
|
|
{
|
|
if (pixels < max_y && (pixels + LINE_HEIGHT(CACHE_DATA(cache))) >= min_y)
|
|
{
|
|
draw_line (text, pixels, &CACHE_DATA(cache));
|
|
|
|
if (CACHE_DATA(cache).wraps)
|
|
draw_line_wrap (text, pixels + CACHE_DATA(cache).font_ascent);
|
|
}
|
|
|
|
if (cursor && text->has_cursor && GTK_WIDGET_HAS_FOCUS (&text->widget))
|
|
{
|
|
if (CACHE_DATA(cache).start.index <= text->cursor_mark.index &&
|
|
CACHE_DATA(cache).end.index >= text->cursor_mark.index)
|
|
draw_cursor (text, TRUE);
|
|
}
|
|
|
|
pixels += LINE_HEIGHT(CACHE_DATA(cache));
|
|
|
|
if (!cache->next)
|
|
{
|
|
fetch_lines_forward (text, 1);
|
|
|
|
if (!cache->next)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
recompute_geometry (GtkText* text)
|
|
{
|
|
GtkPropertyMark start_mark;
|
|
gint height;
|
|
gint width;
|
|
|
|
free_cache (text);
|
|
|
|
start_mark = set_vertical_scroll (text);
|
|
|
|
gdk_window_get_size (text->text_area, &width, &height);
|
|
|
|
text->line_start_cache = fetch_lines (text,
|
|
&start_mark,
|
|
NULL,
|
|
FetchLinesPixels,
|
|
height + text->first_cut_pixels);
|
|
|
|
find_cursor (text);
|
|
}
|
|
|
|
/**********************************************************************/
|
|
/* Selection */
|
|
/**********************************************************************/
|
|
|
|
static gint
|
|
gtk_text_selection_clear (GtkWidget *widget,
|
|
GdkEventSelection *event)
|
|
{
|
|
#if 0
|
|
GtkEntry *entry;
|
|
|
|
g_return_val_if_fail (widget != NULL, FALSE);
|
|
g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
|
|
g_return_val_if_fail (event != NULL, FALSE);
|
|
|
|
entry = GTK_ENTRY (widget);
|
|
|
|
if (entry->have_selection)
|
|
{
|
|
entry->have_selection = FALSE;
|
|
gtk_entry_queue_draw (entry);
|
|
}
|
|
#endif
|
|
return FALSE;
|
|
}
|
|
|
|
static gint
|
|
gtk_text_selection_request (GtkWidget *widget,
|
|
GdkEventSelection *event)
|
|
{
|
|
#if 0
|
|
|
|
GtkEntry *entry;
|
|
gint selection_start_pos;
|
|
gint selection_end_pos;
|
|
|
|
g_return_val_if_fail (widget != NULL, FALSE);
|
|
g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
|
|
g_return_val_if_fail (event != NULL, FALSE);
|
|
|
|
entry = GTK_ENTRY (widget);
|
|
if (entry->selection_start_pos != entry->selection_end_pos)
|
|
{
|
|
selection_start_pos = MIN (entry->selection_start_pos, entry->selection_end_pos);
|
|
selection_end_pos = MAX (entry->selection_start_pos, entry->selection_end_pos);
|
|
|
|
gdk_selection_set (event->requestor, event->selection,
|
|
event->property, event->time,
|
|
(guchar*) &entry->text[selection_start_pos],
|
|
selection_end_pos - selection_start_pos);
|
|
}
|
|
#endif
|
|
return FALSE;
|
|
}
|
|
|
|
static gint
|
|
gtk_text_selection_notify (GtkWidget *widget,
|
|
GdkEventSelection *event)
|
|
{
|
|
#if 0
|
|
GtkEntry *entry;
|
|
gchar *data;
|
|
gint tmp_pos;
|
|
gint reselect;
|
|
|
|
g_return_val_if_fail (widget != NULL, FALSE);
|
|
g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
|
|
g_return_val_if_fail (event != NULL, FALSE);
|
|
|
|
entry = GTK_ENTRY (widget);
|
|
|
|
gdk_selection_get (widget->window, (guchar**) &data);
|
|
|
|
reselect = FALSE;
|
|
if (entry->selection_start_pos != entry->selection_end_pos)
|
|
{
|
|
reselect = TRUE;
|
|
gtk_delete_selection (entry);
|
|
}
|
|
|
|
tmp_pos = entry->current_pos;
|
|
gtk_entry_insert_text (entry, data, strlen (data), &tmp_pos);
|
|
|
|
if (reselect)
|
|
{
|
|
reselect = entry->have_selection;
|
|
gtk_select_region (entry, entry->current_pos, tmp_pos);
|
|
entry->have_selection = reselect;
|
|
}
|
|
|
|
entry->current_pos = tmp_pos;
|
|
|
|
gtk_entry_queue_draw (entry);
|
|
#endif
|
|
return FALSE;
|
|
}
|
|
|
|
/**********************************************************************/
|
|
/* Debug */
|
|
/**********************************************************************/
|
|
|
|
#ifdef DEBUG_GTK_TEXT
|
|
static void
|
|
gtk_text_show_cache_line (GtkText *text, GList *cache,
|
|
const char* what, const char* func, gint line)
|
|
{
|
|
LineParams *lp = &CACHE_DATA(cache);
|
|
gint i;
|
|
|
|
g_print ("%s:%d: cache line %s s=%d,e=%d,lh=%d (",
|
|
func,
|
|
line,
|
|
what,
|
|
lp->start.index,
|
|
lp->end.index,
|
|
LINE_HEIGHT(*lp));
|
|
|
|
for (i = lp->start.index; i < (lp->end.index + lp->wraps); i += 1)
|
|
g_print ("%c", TEXT_INDEX (text, i));
|
|
|
|
g_print (")\n");
|
|
}
|
|
|
|
static void
|
|
gtk_text_show_cache (GtkText *text, const char* func, gint line)
|
|
{
|
|
GList *l = text->line_start_cache;
|
|
|
|
g_print ("*** line cache ***\n");
|
|
for (; l; l = l->next)
|
|
gtk_text_show_cache_line (text, l, "all", func, line);
|
|
}
|
|
|
|
static void
|
|
gtk_text_assert_mark (GtkText *text,
|
|
GtkPropertyMark *mark,
|
|
GtkPropertyMark *before,
|
|
GtkPropertyMark *after,
|
|
const gchar *msg,
|
|
const gchar *where,
|
|
gint line)
|
|
{
|
|
GtkPropertyMark correct_mark = find_mark (text, mark->index);
|
|
|
|
if (mark->offset != correct_mark.offset ||
|
|
mark->property != correct_mark.property)
|
|
g_warning ("incorrect %s text property marker in %s:%d, index %d -- bad!", where, msg, line, mark->index);
|
|
}
|
|
|
|
static void
|
|
gtk_text_assert (GtkText *text,
|
|
const gchar *msg,
|
|
gint line)
|
|
{
|
|
GList* cache = text->line_start_cache;
|
|
GtkPropertyMark* before_mark = NULL;
|
|
GtkPropertyMark* after_mark = NULL;
|
|
|
|
gtk_text_show_props (text, msg, line);
|
|
|
|
for (; cache->prev; cache = cache->prev)
|
|
/* nothing */;
|
|
|
|
g_print ("*** line markers ***\n");
|
|
|
|
for (; cache; cache = cache->next)
|
|
{
|
|
after_mark = &CACHE_DATA(cache).end;
|
|
gtk_text_assert_mark (text, &CACHE_DATA(cache).start, before_mark, after_mark, msg, "start", line);
|
|
before_mark = &CACHE_DATA(cache).start;
|
|
|
|
if (cache->next)
|
|
after_mark = &CACHE_DATA(cache->next).start;
|
|
else
|
|
after_mark = NULL;
|
|
|
|
gtk_text_assert_mark (text, &CACHE_DATA(cache).end, before_mark, after_mark, msg, "end", line);
|
|
before_mark = &CACHE_DATA(cache).end;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_text_show_adj (GtkText *text,
|
|
GtkAdjustment *adj,
|
|
const char* what,
|
|
const char* func,
|
|
gint line)
|
|
{
|
|
g_print ("*** adjustment ***\n");
|
|
|
|
g_print ("%s:%d: %s adjustment l=%.1f u=%.1f v=%.1f si=%.1f pi=%.1f ps=%.1f\n",
|
|
func,
|
|
line,
|
|
what,
|
|
adj->lower,
|
|
adj->upper,
|
|
adj->value,
|
|
adj->step_increment,
|
|
adj->page_increment,
|
|
adj->page_size);
|
|
}
|
|
|
|
static void
|
|
gtk_text_show_props (GtkText *text,
|
|
const char* msg,
|
|
int line)
|
|
{
|
|
GList* props = text->text_properties;
|
|
int proplen = 0;
|
|
|
|
g_print ("%s:%d: ", msg, line);
|
|
|
|
for (; props; props = props->next)
|
|
{
|
|
TextProperty *p = (TextProperty*)props->data;
|
|
|
|
proplen += p->length;
|
|
|
|
g_print ("[%d,%p,%p,%p,%p] ", p->length, p, p->font, p->fore_color, p->back_color);
|
|
}
|
|
|
|
g_print ("\n");
|
|
|
|
if (proplen - 1 != TEXT_LENGTH(text))
|
|
g_warning ("incorrect property list length in %s:%d -- bad!", msg, line);
|
|
}
|
|
#endif
|