forked from AuroraMiddleware/gtk
6205bbbf65
Wed Jan 20 13:06:51 1999 Owen Taylor <otaylor@redhat.com> * gtk/gtktext.[ch] (clear_[focus_]area): Instead of drawing a background pixmap in with gdk_draw_pixmap(), set it as a tile pixmap for a GC. This should speed up things considerably and also will hide a bug where text->first_onscreen_ver_pixel is being corrupted, causing the bg pixmap drawing code to generate graphics exposes.
211 lines
6.6 KiB
C
211 lines
6.6 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
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GTK_TEXT_H__
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#define __GTK_TEXT_H__
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#include <gdk/gdk.h>
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#include <gtk/gtkadjustment.h>
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#include <gtk/gtkeditable.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#define GTK_TYPE_TEXT (gtk_text_get_type ())
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#define GTK_TEXT(obj) (GTK_CHECK_CAST ((obj), GTK_TYPE_TEXT, GtkText))
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#define GTK_TEXT_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GTK_TYPE_TEXT, GtkTextClass))
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#define GTK_IS_TEXT(obj) (GTK_CHECK_TYPE ((obj), GTK_TYPE_TEXT))
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#define GTK_IS_TEXT_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GTK_TYPE_TEXT))
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typedef struct _GtkTextFont GtkTextFont;
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typedef struct _GtkPropertyMark GtkPropertyMark;
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typedef struct _GtkText GtkText;
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typedef struct _GtkTextClass GtkTextClass;
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struct _GtkPropertyMark
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{
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/* Position in list. */
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GList* property;
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/* Offset into that property. */
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guint offset;
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/* Current index. */
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guint index;
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};
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struct _GtkText
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{
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GtkEditable editable;
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GdkWindow *text_area;
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GtkAdjustment *hadj;
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GtkAdjustment *vadj;
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GdkGC *gc;
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GdkPixmap* line_wrap_bitmap;
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GdkPixmap* line_arrow_bitmap;
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/* GAPPED TEXT SEGMENT */
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/* The text, a single segment of text a'la emacs, with a gap
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* where insertion occurs. */
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union { GdkWChar *wc; guchar *ch; } text;
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/* The allocated length of the text segment. */
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guint text_len;
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/* The gap position, index into address where a char
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* should be inserted. */
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guint gap_position;
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/* The gap size, s.t. *(text + gap_position + gap_size) is
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* the first valid character following the gap. */
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guint gap_size;
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/* The last character position, index into address where a
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* character should be appeneded. Thus, text_end - gap_size
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* is the length of the actual data. */
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guint text_end;
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/* LINE START CACHE */
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/* A cache of line-start information. Data is a LineParam*. */
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GList *line_start_cache;
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/* Index to the start of the first visible line. */
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guint first_line_start_index;
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/* The number of pixels cut off of the top line. */
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guint first_cut_pixels;
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/* First visible horizontal pixel. */
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guint first_onscreen_hor_pixel;
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/* First visible vertical pixel. */
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guint first_onscreen_ver_pixel;
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/* FLAGS */
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/* True iff this buffer is wrapping lines, otherwise it is using a
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* horizontal scrollbar. */
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guint line_wrap : 1;
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guint word_wrap : 1;
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/* If a fontset is supplied for the widget, use_wchar become true,
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* and we use GdkWchar as the encoding of text. */
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guint use_wchar : 1;
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/* Frozen, don't do updates. @@@ fixme */
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guint freeze_count;
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/* TEXT PROPERTIES */
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/* A doubly-linked-list containing TextProperty objects. */
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GList *text_properties;
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/* The end of this list. */
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GList *text_properties_end;
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/* The first node before or on the point along with its offset to
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* the point and the buffer's current point. This is the only
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* PropertyMark whose index is guaranteed to remain correct
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* following a buffer insertion or deletion. */
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GtkPropertyMark point;
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/* SCRATCH AREA */
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union { GdkWChar *wc; guchar *ch; } scratch_buffer;
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guint scratch_buffer_len;
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/* SCROLLING */
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gint last_ver_value;
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/* CURSOR */
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gint cursor_pos_x; /* Position of cursor. */
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gint cursor_pos_y; /* Baseline of line cursor is drawn on. */
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GtkPropertyMark cursor_mark; /* Where it is in the buffer. */
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GdkWChar cursor_char; /* Character to redraw. */
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gchar cursor_char_offset; /* Distance from baseline of the font. */
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gint cursor_virtual_x; /* Where it would be if it could be. */
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gint cursor_drawn_level; /* How many people have undrawn. */
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/* Current Line */
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GList *current_line;
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/* Tab Stops */
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GList *tab_stops;
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gint default_tab_width;
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GtkTextFont *current_font; /* Text font for current style */
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/* Timer used for auto-scrolling off ends */
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gint timer;
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guint button; /* currently pressed mouse button */
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GdkGC *bg_gc; /* gc for drawing background pixmap */
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};
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struct _GtkTextClass
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{
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GtkEditableClass parent_class;
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void (*set_scroll_adjustments) (GtkText *text,
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GtkAdjustment *hadjustment,
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GtkAdjustment *vadjustment);
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};
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GtkType gtk_text_get_type (void);
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GtkWidget* gtk_text_new (GtkAdjustment *hadj,
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GtkAdjustment *vadj);
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void gtk_text_set_editable (GtkText *text,
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gboolean editable);
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void gtk_text_set_word_wrap (GtkText *text,
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gint word_wrap);
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void gtk_text_set_line_wrap (GtkText *text,
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gint line_wrap);
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void gtk_text_set_adjustments (GtkText *text,
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GtkAdjustment *hadj,
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GtkAdjustment *vadj);
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void gtk_text_set_point (GtkText *text,
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guint index);
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guint gtk_text_get_point (GtkText *text);
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guint gtk_text_get_length (GtkText *text);
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void gtk_text_freeze (GtkText *text);
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void gtk_text_thaw (GtkText *text);
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void gtk_text_insert (GtkText *text,
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GdkFont *font,
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GdkColor *fore,
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GdkColor *back,
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const char *chars,
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gint length);
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gint gtk_text_backward_delete (GtkText *text,
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guint nchars);
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gint gtk_text_forward_delete (GtkText *text,
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guint nchars);
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#define GTK_TEXT_INDEX(t, index) (((t)->use_wchar) \
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? ((index) < (t)->gap_position ? (t)->text.wc[index] : \
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(t)->text.wc[(index)+(t)->gap_size]) \
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: ((index) < (t)->gap_position ? (t)->text.ch[index] : \
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(t)->text.ch[(index)+(t)->gap_size]))
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __GTK_TEXT_H__ */
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