forked from AuroraMiddleware/gtk
6446484667
2001-10-22 Havoc Pennington <hp@redhat.com>
* gtk/gtktextlayout.h: add a #error unless you define
GTK_TEXT_USE_INTERNAL_UNSUPPORTED_API, so people don't use this accidentally
* gtk/gtktext*.c: #define GTK_TEXT_USE_INTERNAL_UNSUPPORTED_API as appropriate.
896 lines
31 KiB
C
896 lines
31 KiB
C
/* gtktextdisplay.c - display layed-out text
|
|
*
|
|
* Copyright (c) 1992-1994 The Regents of the University of California.
|
|
* Copyright (c) 1994-1997 Sun Microsystems, Inc.
|
|
* Copyright (c) 2000 Red Hat, Inc.
|
|
* Tk->Gtk port by Havoc Pennington
|
|
*
|
|
* This file can be used under your choice of two licenses, the LGPL
|
|
* and the original Tk license.
|
|
*
|
|
* LGPL:
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free
|
|
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
* Original Tk license:
|
|
*
|
|
* This software is copyrighted by the Regents of the University of
|
|
* California, Sun Microsystems, Inc., and other parties. The
|
|
* following terms apply to all files associated with the software
|
|
* unless explicitly disclaimed in individual files.
|
|
*
|
|
* The authors hereby grant permission to use, copy, modify,
|
|
* distribute, and license this software and its documentation for any
|
|
* purpose, provided that existing copyright notices are retained in
|
|
* all copies and that this notice is included verbatim in any
|
|
* distributions. No written agreement, license, or royalty fee is
|
|
* required for any of the authorized uses. Modifications to this
|
|
* software may be copyrighted by their authors and need not follow
|
|
* the licensing terms described here, provided that the new terms are
|
|
* clearly indicated on the first page of each file where they apply.
|
|
*
|
|
* IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY
|
|
* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
|
|
* DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION,
|
|
* OR ANY DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED
|
|
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
|
|
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
|
|
* NON-INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS,
|
|
* AND THE AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE
|
|
* MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
|
|
*
|
|
* GOVERNMENT USE: If you are acquiring this software on behalf of the
|
|
* U.S. government, the Government shall have only "Restricted Rights"
|
|
* in the software and related documentation as defined in the Federal
|
|
* Acquisition Regulations (FARs) in Clause 52.227.19 (c) (2). If you
|
|
* are acquiring the software on behalf of the Department of Defense,
|
|
* the software shall be classified as "Commercial Computer Software"
|
|
* and the Government shall have only "Restricted Rights" as defined
|
|
* in Clause 252.227-7013 (c) (1) of DFARs. Notwithstanding the
|
|
* foregoing, the authors grant the U.S. Government and others acting
|
|
* in its behalf permission to use and distribute the software in
|
|
* accordance with the terms specified in this license.
|
|
*
|
|
*/
|
|
/*
|
|
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
|
|
* file for a list of people on the GTK+ Team. See the ChangeLog
|
|
* files for a list of changes. These files are distributed with
|
|
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
|
|
*/
|
|
|
|
#define GTK_TEXT_USE_INTERNAL_UNSUPPORTED_API
|
|
#include "gtktextdisplay.h"
|
|
/* DO NOT go putting private headers in here. This file should only
|
|
* use the semi-public headers, as with gtktextview.c.
|
|
*/
|
|
|
|
#include <pango/pango.h>
|
|
|
|
typedef struct _GtkTextRenderState GtkTextRenderState;
|
|
|
|
struct _GtkTextRenderState
|
|
{
|
|
GtkWidget *widget;
|
|
|
|
GtkTextAppearance *last_appearance;
|
|
GtkTextAppearance *last_bg_appearance;
|
|
GdkGC *fg_gc;
|
|
GdkGC *bg_gc;
|
|
GdkRectangle clip_rect;
|
|
};
|
|
|
|
static void get_item_properties (PangoItem *item,
|
|
GtkTextAppearance **appearance);
|
|
static GdkRegion *get_selected_clip (GtkTextRenderState *render_state,
|
|
PangoLayout *layout,
|
|
PangoLayoutLine *line,
|
|
int x,
|
|
int y,
|
|
int height,
|
|
int start_index,
|
|
int end_index);
|
|
|
|
static GtkTextRenderState *
|
|
gtk_text_render_state_new (GtkWidget *widget,
|
|
GdkDrawable *drawable,
|
|
GdkRectangle *clip_rect)
|
|
{
|
|
GtkTextRenderState *state = g_new0 (GtkTextRenderState, 1);
|
|
|
|
state->widget = widget;
|
|
state->fg_gc = gdk_gc_new (drawable);
|
|
state->bg_gc = gdk_gc_new (drawable);
|
|
state->clip_rect = *clip_rect;
|
|
|
|
return state;
|
|
}
|
|
|
|
static void
|
|
gtk_text_render_state_destroy (GtkTextRenderState *state)
|
|
{
|
|
gdk_gc_unref (state->fg_gc);
|
|
gdk_gc_unref (state->bg_gc);
|
|
|
|
g_free (state);
|
|
}
|
|
|
|
static void
|
|
gtk_text_render_state_set_color (GtkTextRenderState *state,
|
|
GdkGC *gc,
|
|
GdkColor *color)
|
|
{
|
|
gdk_colormap_alloc_color (gtk_widget_get_colormap (state->widget), color, FALSE, TRUE);
|
|
gdk_gc_set_foreground (gc, color);
|
|
}
|
|
|
|
static void
|
|
gtk_text_render_state_update (GtkTextRenderState *state,
|
|
GtkTextAppearance *new_appearance)
|
|
{
|
|
if (!state->last_appearance ||
|
|
!gdk_color_equal (&new_appearance->fg_color, &state->last_appearance->fg_color))
|
|
gtk_text_render_state_set_color (state, state->fg_gc, &new_appearance->fg_color);
|
|
|
|
if (!state->last_appearance ||
|
|
new_appearance->fg_stipple != state->last_appearance->fg_stipple)
|
|
{
|
|
if (new_appearance->fg_stipple)
|
|
{
|
|
gdk_gc_set_fill (state->fg_gc, GDK_STIPPLED);
|
|
gdk_gc_set_stipple (state->fg_gc, new_appearance->fg_stipple);
|
|
}
|
|
else
|
|
{
|
|
gdk_gc_set_fill (state->fg_gc, GDK_SOLID);
|
|
}
|
|
}
|
|
|
|
if (new_appearance->draw_bg)
|
|
{
|
|
if (!state->last_bg_appearance ||
|
|
!gdk_color_equal (&new_appearance->bg_color, &state->last_bg_appearance->bg_color))
|
|
gtk_text_render_state_set_color (state, state->bg_gc, &new_appearance->bg_color);
|
|
|
|
if (!state->last_bg_appearance ||
|
|
new_appearance->bg_stipple != state->last_bg_appearance->bg_stipple)
|
|
{
|
|
if (new_appearance->bg_stipple)
|
|
{
|
|
gdk_gc_set_fill (state->bg_gc, GDK_STIPPLED);
|
|
gdk_gc_set_stipple (state->bg_gc, new_appearance->bg_stipple);
|
|
}
|
|
else
|
|
{
|
|
gdk_gc_set_fill (state->bg_gc, GDK_SOLID);
|
|
}
|
|
}
|
|
|
|
state->last_bg_appearance = new_appearance;
|
|
}
|
|
|
|
state->last_appearance = new_appearance;
|
|
}
|
|
|
|
static void
|
|
get_shape_extents (PangoLayoutRun *run,
|
|
PangoRectangle *ink_rect,
|
|
PangoRectangle *logical_rect)
|
|
{
|
|
GSList *tmp_list = run->item->analysis.extra_attrs;
|
|
|
|
while (tmp_list)
|
|
{
|
|
PangoAttribute *attr = tmp_list->data;
|
|
|
|
if (attr->klass->type == PANGO_ATTR_SHAPE)
|
|
{
|
|
if (logical_rect)
|
|
*logical_rect = ((PangoAttrShape *)attr)->logical_rect;
|
|
|
|
if (ink_rect)
|
|
*ink_rect = ((PangoAttrShape *)attr)->ink_rect;
|
|
|
|
return;
|
|
}
|
|
|
|
tmp_list = tmp_list->next;
|
|
}
|
|
|
|
g_assert_not_reached ();
|
|
}
|
|
|
|
static void
|
|
render_layout_line (GdkDrawable *drawable,
|
|
GtkTextRenderState *render_state,
|
|
PangoLayoutLine *line,
|
|
GSList **shaped_pointer,
|
|
int x,
|
|
int y,
|
|
gboolean selected)
|
|
{
|
|
GSList *tmp_list = line->runs;
|
|
PangoRectangle overall_rect;
|
|
PangoRectangle logical_rect;
|
|
PangoRectangle ink_rect;
|
|
gint x_off = 0;
|
|
GdkGC *fg_gc;
|
|
|
|
pango_layout_line_get_extents (line, NULL, &overall_rect);
|
|
|
|
while (tmp_list)
|
|
{
|
|
PangoLayoutRun *run = tmp_list->data;
|
|
GtkTextAppearance *appearance;
|
|
gint risen_y;
|
|
gint shaped_width_pixels = 0;
|
|
gboolean need_ink = FALSE;
|
|
|
|
tmp_list = tmp_list->next;
|
|
|
|
get_item_properties (run->item, &appearance);
|
|
|
|
g_assert (appearance != NULL);
|
|
|
|
risen_y = y - PANGO_PIXELS (appearance->rise);
|
|
|
|
if (selected)
|
|
{
|
|
if (GTK_WIDGET_HAS_FOCUS (render_state->widget))
|
|
fg_gc = render_state->widget->style->text_gc[GTK_STATE_SELECTED];
|
|
else
|
|
fg_gc = render_state->widget->style->text_gc [GTK_STATE_ACTIVE];
|
|
}
|
|
else
|
|
{
|
|
gtk_text_render_state_update (render_state, appearance);
|
|
|
|
fg_gc = render_state->fg_gc;
|
|
}
|
|
|
|
if (appearance->underline != PANGO_UNDERLINE_NONE ||
|
|
appearance->strikethrough)
|
|
need_ink = TRUE;
|
|
|
|
if (appearance->is_text)
|
|
{
|
|
if (need_ink)
|
|
pango_glyph_string_extents (run->glyphs, run->item->analysis.font,
|
|
&ink_rect, &logical_rect);
|
|
else
|
|
pango_glyph_string_extents (run->glyphs, run->item->analysis.font,
|
|
NULL, &logical_rect);
|
|
}
|
|
else
|
|
{
|
|
if (need_ink)
|
|
get_shape_extents (run, &ink_rect, &logical_rect);
|
|
else
|
|
get_shape_extents (run, NULL, &logical_rect);
|
|
}
|
|
|
|
if (appearance->draw_bg && !selected)
|
|
gdk_draw_rectangle (drawable, render_state->bg_gc, TRUE,
|
|
x + PANGO_PIXELS (x_off) + PANGO_PIXELS (logical_rect.x),
|
|
risen_y + PANGO_PIXELS (logical_rect.y),
|
|
PANGO_PIXELS (logical_rect.width),
|
|
PANGO_PIXELS (logical_rect.height));
|
|
|
|
if (appearance->is_text)
|
|
gdk_draw_glyphs (drawable, fg_gc,
|
|
run->item->analysis.font,
|
|
x + PANGO_PIXELS (x_off),
|
|
risen_y, run->glyphs);
|
|
else
|
|
{
|
|
GObject *shaped = (*shaped_pointer)->data;
|
|
|
|
*shaped_pointer = (*shaped_pointer)->next;
|
|
|
|
if (shaped == NULL)
|
|
{
|
|
/* This happens if we have an empty widget anchor. Draw
|
|
* something empty-looking.
|
|
*/
|
|
GdkRectangle shape_rect, draw_rect;
|
|
|
|
shape_rect.x = x + x_off / PANGO_SCALE;
|
|
shape_rect.y = risen_y - PANGO_PIXELS (logical_rect.height);
|
|
shape_rect.width = PANGO_PIXELS (logical_rect.width);
|
|
shape_rect.height = PANGO_PIXELS (logical_rect.height);
|
|
|
|
if (gdk_rectangle_intersect (&shape_rect, &render_state->clip_rect,
|
|
&draw_rect))
|
|
{
|
|
gdk_draw_rectangle (drawable, render_state->fg_gc,
|
|
FALSE, shape_rect.x, shape_rect.y,
|
|
shape_rect.width, shape_rect.height);
|
|
|
|
gdk_draw_line (drawable, render_state->fg_gc,
|
|
shape_rect.x, shape_rect.y,
|
|
shape_rect.x + shape_rect.width,
|
|
shape_rect.y + shape_rect.height);
|
|
|
|
gdk_draw_line (drawable, render_state->fg_gc,
|
|
shape_rect.x + shape_rect.width, shape_rect.y,
|
|
shape_rect.x,
|
|
shape_rect.y + shape_rect.height);
|
|
}
|
|
}
|
|
else if (GDK_IS_PIXBUF (shaped))
|
|
{
|
|
gint width, height;
|
|
GdkRectangle pixbuf_rect, draw_rect;
|
|
GdkPixbuf *pixbuf;
|
|
|
|
pixbuf = GDK_PIXBUF (shaped);
|
|
|
|
width = gdk_pixbuf_get_width (pixbuf);
|
|
height = gdk_pixbuf_get_height (pixbuf);
|
|
|
|
pixbuf_rect.x = x + x_off / PANGO_SCALE;
|
|
pixbuf_rect.y = risen_y - height;
|
|
pixbuf_rect.width = width;
|
|
pixbuf_rect.height = height;
|
|
|
|
if (gdk_rectangle_intersect (&pixbuf_rect, &render_state->clip_rect,
|
|
&draw_rect))
|
|
{
|
|
GdkBitmap *mask = NULL;
|
|
|
|
if (gdk_pixbuf_get_has_alpha (pixbuf))
|
|
{
|
|
mask = gdk_pixmap_new (drawable,
|
|
gdk_pixbuf_get_width (pixbuf),
|
|
gdk_pixbuf_get_height (pixbuf),
|
|
1);
|
|
|
|
gdk_pixbuf_render_threshold_alpha (pixbuf, mask,
|
|
0, 0, 0, 0,
|
|
gdk_pixbuf_get_width (pixbuf),
|
|
gdk_pixbuf_get_height (pixbuf),
|
|
128);
|
|
|
|
}
|
|
|
|
if (mask)
|
|
{
|
|
gdk_gc_set_clip_mask (render_state->fg_gc, mask);
|
|
gdk_gc_set_clip_origin (render_state->fg_gc,
|
|
pixbuf_rect.x, pixbuf_rect.y);
|
|
}
|
|
|
|
gdk_pixbuf_render_to_drawable (pixbuf,
|
|
drawable,
|
|
render_state->fg_gc,
|
|
draw_rect.x - pixbuf_rect.x,
|
|
draw_rect.y - pixbuf_rect.y,
|
|
draw_rect.x, draw_rect.y,
|
|
draw_rect.width,
|
|
draw_rect.height,
|
|
GDK_RGB_DITHER_NORMAL,
|
|
0, 0);
|
|
|
|
if (mask)
|
|
{
|
|
gdk_gc_set_clip_rectangle (render_state->fg_gc,
|
|
&render_state->clip_rect);
|
|
g_object_unref (G_OBJECT (mask));
|
|
}
|
|
}
|
|
|
|
shaped_width_pixels = width;
|
|
}
|
|
else if (GTK_IS_WIDGET (shaped))
|
|
{
|
|
gint width, height;
|
|
GdkRectangle draw_rect;
|
|
GtkWidget *widget;
|
|
|
|
widget = GTK_WIDGET (shaped);
|
|
|
|
width = widget->allocation.width;
|
|
height = widget->allocation.height;
|
|
|
|
g_print ("widget allocation at %d,%d %d x %d\n",
|
|
widget->allocation.x,
|
|
widget->allocation.y,
|
|
widget->allocation.width,
|
|
widget->allocation.height);
|
|
|
|
if (GTK_WIDGET_DRAWABLE (widget) &&
|
|
gdk_rectangle_intersect (&widget->allocation,
|
|
&render_state->clip_rect,
|
|
&draw_rect))
|
|
|
|
{
|
|
g_print ("drawing widget area %d,%d %d x %d\n",
|
|
draw_rect.x,
|
|
draw_rect.y,
|
|
draw_rect.width,
|
|
draw_rect.height);
|
|
|
|
gtk_widget_draw (widget, &draw_rect);
|
|
}
|
|
|
|
shaped_width_pixels = width;
|
|
}
|
|
else
|
|
g_assert_not_reached (); /* not a pixbuf or widget */
|
|
}
|
|
|
|
switch (appearance->underline)
|
|
{
|
|
case PANGO_UNDERLINE_NONE:
|
|
break;
|
|
case PANGO_UNDERLINE_DOUBLE:
|
|
g_assert (need_ink);
|
|
gdk_draw_line (drawable, fg_gc,
|
|
x + (x_off + ink_rect.x) / PANGO_SCALE - 1,
|
|
risen_y + 3,
|
|
x + (x_off + ink_rect.x + ink_rect.width) / PANGO_SCALE,
|
|
risen_y + 3);
|
|
/* Fall through */
|
|
case PANGO_UNDERLINE_SINGLE:
|
|
g_assert (need_ink);
|
|
gdk_draw_line (drawable, fg_gc,
|
|
x + (x_off + ink_rect.x) / PANGO_SCALE - 1,
|
|
risen_y + 1,
|
|
x + (x_off + ink_rect.x + ink_rect.width) / PANGO_SCALE,
|
|
risen_y + 1);
|
|
break;
|
|
case PANGO_UNDERLINE_LOW:
|
|
g_assert (need_ink);
|
|
gdk_draw_line (drawable, fg_gc,
|
|
x + (x_off + ink_rect.x) / PANGO_SCALE - 1,
|
|
risen_y + (ink_rect.y + ink_rect.height) / PANGO_SCALE + 1,
|
|
x + (x_off + ink_rect.x + ink_rect.width) / PANGO_SCALE,
|
|
risen_y + (ink_rect.y + ink_rect.height) / PANGO_SCALE + 1);
|
|
break;
|
|
}
|
|
|
|
if (appearance->strikethrough)
|
|
{
|
|
gint strikethrough_y = risen_y + (0.3 * logical_rect.y) / PANGO_SCALE;
|
|
|
|
g_assert (need_ink);
|
|
|
|
gdk_draw_line (drawable, fg_gc,
|
|
x + (x_off + ink_rect.x) / PANGO_SCALE - 1, strikethrough_y,
|
|
x + (x_off + ink_rect.x + ink_rect.width) / PANGO_SCALE, strikethrough_y);
|
|
}
|
|
|
|
if (appearance->is_text)
|
|
x_off += logical_rect.width;
|
|
else
|
|
x_off += shaped_width_pixels * PANGO_SCALE;
|
|
}
|
|
}
|
|
|
|
static void
|
|
render_para (GdkDrawable *drawable,
|
|
GtkTextRenderState *render_state,
|
|
GtkTextLineDisplay *line_display,
|
|
/* Top-left corner of paragraph including all margins */
|
|
int x,
|
|
int y,
|
|
int selection_start_index,
|
|
int selection_end_index)
|
|
{
|
|
GSList *shaped_pointer = line_display->shaped_objects;
|
|
PangoLayout *layout = line_display->layout;
|
|
int byte_offset = 0;
|
|
PangoLayoutIter *iter;
|
|
PangoRectangle layout_logical;
|
|
int screen_width;
|
|
GdkGC *fg_gc, *bg_gc;
|
|
gint state;
|
|
|
|
gboolean first = TRUE;
|
|
|
|
iter = pango_layout_get_iter (layout);
|
|
|
|
pango_layout_iter_get_layout_extents (iter, NULL, &layout_logical);
|
|
|
|
/* Adjust for margins */
|
|
|
|
layout_logical.x += line_display->x_offset * PANGO_SCALE;
|
|
layout_logical.y += line_display->top_margin * PANGO_SCALE;
|
|
|
|
screen_width = line_display->total_width;
|
|
|
|
if (GTK_WIDGET_HAS_FOCUS (render_state->widget))
|
|
state = GTK_STATE_SELECTED;
|
|
else
|
|
state = GTK_STATE_ACTIVE;
|
|
|
|
fg_gc = render_state->widget->style->text_gc [state];
|
|
bg_gc = render_state->widget->style->base_gc [state];
|
|
|
|
do
|
|
{
|
|
PangoLayoutLine *line = pango_layout_iter_get_line (iter);
|
|
int selection_y, selection_height;
|
|
int first_y, last_y;
|
|
PangoRectangle line_rect;
|
|
int baseline;
|
|
|
|
pango_layout_iter_get_line_extents (iter, NULL, &line_rect);
|
|
baseline = pango_layout_iter_get_baseline (iter);
|
|
pango_layout_iter_get_line_yrange (iter, &first_y, &last_y);
|
|
|
|
/* Adjust for margins */
|
|
|
|
line_rect.x += line_display->x_offset * PANGO_SCALE;
|
|
line_rect.y += line_display->top_margin * PANGO_SCALE;
|
|
baseline += line_display->top_margin * PANGO_SCALE;
|
|
|
|
/* Selection is the height of the line, plus top/bottom
|
|
* margin if we're the first/last line
|
|
*/
|
|
selection_y = y + PANGO_PIXELS (first_y) + line_display->top_margin;
|
|
selection_height = PANGO_PIXELS (last_y) - PANGO_PIXELS (first_y);
|
|
|
|
if (first)
|
|
{
|
|
selection_y -= line_display->top_margin;
|
|
selection_height += line_display->top_margin;
|
|
}
|
|
|
|
if (pango_layout_iter_at_last_line (iter))
|
|
selection_height += line_display->bottom_margin;
|
|
|
|
first = FALSE;
|
|
|
|
if (selection_start_index < byte_offset &&
|
|
selection_end_index > line->length + byte_offset) /* All selected */
|
|
{
|
|
gdk_draw_rectangle (drawable,
|
|
bg_gc,
|
|
TRUE,
|
|
x + line_display->left_margin,
|
|
selection_y,
|
|
screen_width,
|
|
selection_height);
|
|
|
|
render_layout_line (drawable, render_state, line, &shaped_pointer,
|
|
x + PANGO_PIXELS (line_rect.x),
|
|
y + PANGO_PIXELS (baseline),
|
|
TRUE);
|
|
}
|
|
else
|
|
{
|
|
GSList *shaped_pointer_tmp = shaped_pointer;
|
|
|
|
render_layout_line (drawable, render_state,
|
|
line, &shaped_pointer,
|
|
x + PANGO_PIXELS (line_rect.x),
|
|
y + PANGO_PIXELS (baseline),
|
|
FALSE);
|
|
|
|
if (selection_start_index <= byte_offset + line->length &&
|
|
selection_end_index > byte_offset) /* Some selected */
|
|
{
|
|
GdkRegion *clip_region = get_selected_clip (render_state, layout, line,
|
|
x + line_display->x_offset,
|
|
selection_y,
|
|
selection_height,
|
|
selection_start_index, selection_end_index);
|
|
gdk_gc_set_clip_region (fg_gc, clip_region);
|
|
gdk_gc_set_clip_region (bg_gc, clip_region);
|
|
|
|
gdk_draw_rectangle (drawable,
|
|
bg_gc,
|
|
TRUE,
|
|
x + PANGO_PIXELS (line_rect.x),
|
|
selection_y,
|
|
PANGO_PIXELS (line_rect.width),
|
|
selection_height);
|
|
|
|
render_layout_line (drawable, render_state, line, &shaped_pointer_tmp,
|
|
x + PANGO_PIXELS (line_rect.x),
|
|
y + PANGO_PIXELS (baseline),
|
|
TRUE);
|
|
|
|
gdk_gc_set_clip_region (fg_gc, NULL);
|
|
gdk_gc_set_clip_region (bg_gc, NULL);
|
|
|
|
gdk_region_destroy (clip_region);
|
|
|
|
/* Paint in the ends of the line */
|
|
if (line_rect.x > line_display->left_margin * PANGO_SCALE &&
|
|
((line_display->direction == GTK_TEXT_DIR_LTR && selection_start_index < byte_offset) ||
|
|
(line_display->direction == GTK_TEXT_DIR_RTL && selection_end_index > byte_offset + line->length)))
|
|
{
|
|
gdk_draw_rectangle (drawable,
|
|
bg_gc,
|
|
TRUE,
|
|
x + line_display->left_margin,
|
|
selection_y,
|
|
PANGO_PIXELS (line_rect.x) - line_display->left_margin,
|
|
selection_height);
|
|
}
|
|
|
|
if (line_rect.x + line_rect.width <
|
|
(screen_width + line_display->left_margin) * PANGO_SCALE &&
|
|
((line_display->direction == GTK_TEXT_DIR_LTR && selection_end_index > byte_offset + line->length) ||
|
|
(line_display->direction == GTK_TEXT_DIR_RTL && selection_start_index < byte_offset)))
|
|
{
|
|
int nonlayout_width;
|
|
|
|
nonlayout_width =
|
|
line_display->left_margin + screen_width -
|
|
PANGO_PIXELS (line_rect.x) - PANGO_PIXELS (line_rect.width);
|
|
|
|
gdk_draw_rectangle (drawable,
|
|
bg_gc,
|
|
TRUE,
|
|
x + PANGO_PIXELS (line_rect.x) + PANGO_PIXELS (line_rect.width),
|
|
selection_y,
|
|
nonlayout_width,
|
|
selection_height);
|
|
}
|
|
}
|
|
}
|
|
|
|
byte_offset += line->length;
|
|
}
|
|
while (pango_layout_iter_next_line (iter));
|
|
|
|
pango_layout_iter_free (iter);
|
|
}
|
|
|
|
static GdkRegion *
|
|
get_selected_clip (GtkTextRenderState *render_state,
|
|
PangoLayout *layout,
|
|
PangoLayoutLine *line,
|
|
int x,
|
|
int y,
|
|
int height,
|
|
int start_index,
|
|
int end_index)
|
|
{
|
|
gint *ranges;
|
|
gint n_ranges, i;
|
|
GdkRegion *clip_region = gdk_region_new ();
|
|
GdkRegion *tmp_region;
|
|
|
|
pango_layout_line_get_x_ranges (line, start_index, end_index, &ranges, &n_ranges);
|
|
|
|
for (i=0; i < n_ranges; i++)
|
|
{
|
|
GdkRectangle rect;
|
|
|
|
rect.x = x + PANGO_PIXELS (ranges[2*i]);
|
|
rect.y = y;
|
|
rect.width = PANGO_PIXELS (ranges[2*i + 1]) - PANGO_PIXELS (ranges[2*i]);
|
|
rect.height = height;
|
|
|
|
gdk_region_union_with_rect (clip_region, &rect);
|
|
}
|
|
|
|
tmp_region = gdk_region_rectangle (&render_state->clip_rect);
|
|
gdk_region_intersect (clip_region, tmp_region);
|
|
gdk_region_destroy (tmp_region);
|
|
|
|
g_free (ranges);
|
|
return clip_region;
|
|
}
|
|
|
|
static void
|
|
get_item_properties (PangoItem *item,
|
|
GtkTextAppearance **appearance)
|
|
{
|
|
GSList *tmp_list = item->analysis.extra_attrs;
|
|
|
|
*appearance = NULL;
|
|
|
|
while (tmp_list)
|
|
{
|
|
PangoAttribute *attr = tmp_list->data;
|
|
|
|
if (attr->klass->type == gtk_text_attr_appearance_type)
|
|
{
|
|
*appearance = &((GtkTextAttrAppearance *)attr)->appearance;
|
|
}
|
|
|
|
tmp_list = tmp_list->next;
|
|
}
|
|
}
|
|
|
|
void
|
|
gtk_text_layout_draw (GtkTextLayout *layout,
|
|
GtkWidget *widget,
|
|
GdkDrawable *drawable,
|
|
GdkGC *cursor_gc,
|
|
/* Location of the drawable
|
|
in layout coordinates */
|
|
gint x_offset,
|
|
gint y_offset,
|
|
/* Region of the layout to
|
|
render */
|
|
gint x,
|
|
gint y,
|
|
gint width,
|
|
gint height)
|
|
{
|
|
GdkRectangle clip;
|
|
gint current_y;
|
|
GSList *cursor_list;
|
|
GtkTextRenderState *render_state;
|
|
GtkTextIter selection_start, selection_end;
|
|
gboolean have_selection = FALSE;
|
|
GSList *line_list;
|
|
GSList *tmp_list;
|
|
|
|
g_return_if_fail (GTK_IS_TEXT_LAYOUT (layout));
|
|
g_return_if_fail (layout->default_style != NULL);
|
|
g_return_if_fail (layout->buffer != NULL);
|
|
g_return_if_fail (drawable != NULL);
|
|
g_return_if_fail (width >= 0);
|
|
g_return_if_fail (height >= 0);
|
|
|
|
if (width == 0 || height == 0)
|
|
return;
|
|
|
|
line_list = gtk_text_layout_get_lines (layout, y + y_offset, y + y_offset + height, ¤t_y);
|
|
current_y -= y_offset;
|
|
|
|
if (line_list == NULL)
|
|
return; /* nothing on the screen */
|
|
|
|
clip.x = x;
|
|
clip.y = y;
|
|
clip.width = width;
|
|
clip.height = height;
|
|
|
|
render_state = gtk_text_render_state_new (widget, drawable, &clip);
|
|
|
|
gdk_gc_set_clip_rectangle (render_state->fg_gc, &clip);
|
|
gdk_gc_set_clip_rectangle (render_state->bg_gc, &clip);
|
|
|
|
gtk_text_layout_wrap_loop_start (layout);
|
|
|
|
if (gtk_text_buffer_get_selection_bounds (layout->buffer,
|
|
&selection_start,
|
|
&selection_end))
|
|
have_selection = TRUE;
|
|
|
|
tmp_list = line_list;
|
|
while (tmp_list != NULL)
|
|
{
|
|
GtkTextLineDisplay *line_display;
|
|
gint selection_start_index = -1;
|
|
gint selection_end_index = -1;
|
|
gboolean have_strong;
|
|
gboolean have_weak;
|
|
|
|
GtkTextLine *line = tmp_list->data;
|
|
|
|
line_display = gtk_text_layout_get_line_display (layout, line, FALSE);
|
|
|
|
if (line_display->height > 0)
|
|
{
|
|
g_assert (line_display->layout != NULL);
|
|
|
|
if (have_selection)
|
|
{
|
|
GtkTextIter line_start, line_end;
|
|
gint byte_count;
|
|
|
|
gtk_text_layout_get_iter_at_line (layout,
|
|
&line_start,
|
|
line, 0);
|
|
byte_count = gtk_text_iter_get_bytes_in_line (&line_start);
|
|
|
|
/* FIXME the -1 assumes a newline I think */
|
|
gtk_text_layout_get_iter_at_line (layout,
|
|
&line_end,
|
|
line, byte_count - 1);
|
|
|
|
if (gtk_text_iter_compare (&selection_start, &line_end) <= 0 &&
|
|
gtk_text_iter_compare (&selection_end, &line_start) >= 0)
|
|
{
|
|
if (gtk_text_iter_compare (&selection_start, &line_start) >= 0)
|
|
selection_start_index = gtk_text_iter_get_line_index (&selection_start);
|
|
else
|
|
selection_start_index = -1;
|
|
|
|
if (gtk_text_iter_compare (&selection_end, &line_end) <= 0)
|
|
selection_end_index = gtk_text_iter_get_line_index (&selection_end);
|
|
else
|
|
selection_end_index = byte_count;
|
|
}
|
|
}
|
|
|
|
render_para (drawable, render_state, line_display,
|
|
- x_offset,
|
|
current_y,
|
|
selection_start_index, selection_end_index);
|
|
|
|
|
|
/* We paint the cursors last, because they overlap another chunk
|
|
and need to appear on top. */
|
|
|
|
have_strong = FALSE;
|
|
have_weak = FALSE;
|
|
|
|
cursor_list = line_display->cursors;
|
|
while (cursor_list)
|
|
{
|
|
GtkTextCursorDisplay *cursor = cursor_list->data;
|
|
if (cursor->is_strong)
|
|
have_strong = TRUE;
|
|
else
|
|
have_weak = TRUE;
|
|
|
|
cursor_list = cursor_list->next;
|
|
}
|
|
|
|
cursor_list = line_display->cursors;
|
|
while (cursor_list)
|
|
{
|
|
GtkTextCursorDisplay *cursor = cursor_list->data;
|
|
GtkTextDirection dir;
|
|
GdkRectangle cursor_location;
|
|
|
|
GdkGC *gc;
|
|
|
|
if (cursor->is_strong)
|
|
gc = cursor_gc;
|
|
else
|
|
gc = widget->style->text_gc[GTK_STATE_NORMAL];
|
|
|
|
if (have_strong && have_weak)
|
|
{
|
|
dir = line_display->direction;
|
|
if (!cursor->is_strong)
|
|
dir = (dir == GTK_TEXT_DIR_RTL) ? GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL;
|
|
}
|
|
else
|
|
{
|
|
dir = GTK_TEXT_DIR_NONE;
|
|
}
|
|
|
|
cursor_location.x = line_display->x_offset + cursor->x - x_offset;
|
|
cursor_location.y = current_y + line_display->top_margin + cursor->y;
|
|
cursor_location.width = 0;
|
|
cursor_location.height = cursor->height;
|
|
|
|
gdk_gc_set_clip_rectangle(gc, &clip);
|
|
_gtk_draw_insertion_cursor (drawable, gc, &cursor_location, dir);
|
|
gdk_gc_set_clip_rectangle (gc, NULL);
|
|
|
|
cursor_list = cursor_list->next;
|
|
}
|
|
} /* line_display->height > 0 */
|
|
|
|
current_y += line_display->height;
|
|
gtk_text_layout_free_line_display (layout, line_display);
|
|
render_state->last_appearance = NULL;
|
|
render_state->last_bg_appearance = NULL;
|
|
|
|
tmp_list = g_slist_next (tmp_list);
|
|
}
|
|
|
|
gtk_text_layout_wrap_loop_end (layout);
|
|
gtk_text_render_state_destroy (render_state);
|
|
|
|
g_slist_free (line_list);
|
|
}
|