forked from AuroraMiddleware/gtk
288ff7e058
2001-05-17 Joe Shaw <joe@ximian.com> * gtk/gtktextdisplay.c (gtk_text_layout_draw): Remove the assertions that x_offset and y_offset must be >= 0. Clip the cursor being drawn if it is only partially onscreen.
820 lines
29 KiB
C
820 lines
29 KiB
C
/* gtktextdisplay.c - display layed-out text
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*
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* Copyright (c) 1992-1994 The Regents of the University of California.
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* Copyright (c) 1994-1997 Sun Microsystems, Inc.
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* Copyright (c) 2000 Red Hat, Inc.
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* Tk->Gtk port by Havoc Pennington
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*
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* This file can be used under your choice of two licenses, the LGPL
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* and the original Tk license.
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*
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* LGPL:
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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 Lesser 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser 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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* Original Tk license:
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*
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* This software is copyrighted by the Regents of the University of
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* California, Sun Microsystems, Inc., and other parties. The
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* following terms apply to all files associated with the software
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* unless explicitly disclaimed in individual files.
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*
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* The authors hereby grant permission to use, copy, modify,
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* distribute, and license this software and its documentation for any
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* purpose, provided that existing copyright notices are retained in
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* all copies and that this notice is included verbatim in any
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* distributions. No written agreement, license, or royalty fee is
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* required for any of the authorized uses. Modifications to this
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* software may be copyrighted by their authors and need not follow
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* the licensing terms described here, provided that the new terms are
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* clearly indicated on the first page of each file where they apply.
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*
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* IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY
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* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
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* DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION,
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* OR ANY DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
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* NON-INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS,
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* AND THE AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE
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* MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* GOVERNMENT USE: If you are acquiring this software on behalf of the
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* U.S. government, the Government shall have only "Restricted Rights"
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* in the software and related documentation as defined in the Federal
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* Acquisition Regulations (FARs) in Clause 52.227.19 (c) (2). If you
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* are acquiring the software on behalf of the Department of Defense,
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* the software shall be classified as "Commercial Computer Software"
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* and the Government shall have only "Restricted Rights" as defined
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* in Clause 252.227-7013 (c) (1) of DFARs. Notwithstanding the
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* foregoing, the authors grant the U.S. Government and others acting
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* in its behalf permission to use and distribute the software in
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* accordance with the terms specified in this license.
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*
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "gtktextdisplay.h"
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/* DO NOT go putting private headers in here. This file should only
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* use the semi-public headers, as with gtktextview.c.
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*/
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#include <pango/pango.h>
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typedef struct _GtkTextRenderState GtkTextRenderState;
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struct _GtkTextRenderState
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{
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GtkWidget *widget;
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GtkTextAppearance *last_appearance;
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GtkTextAppearance *last_bg_appearance;
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GdkGC *fg_gc;
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GdkGC *bg_gc;
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GdkRectangle clip_rect;
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};
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static void get_item_properties (PangoItem *item,
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GtkTextAppearance **appearance);
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static GdkRegion *get_selected_clip (GtkTextRenderState *render_state,
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PangoLayout *layout,
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PangoLayoutLine *line,
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int x,
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int y,
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int height,
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int start_index,
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int end_index);
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static GtkTextRenderState *
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gtk_text_render_state_new (GtkWidget *widget,
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GdkDrawable *drawable,
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GdkRectangle *clip_rect)
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{
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GtkTextRenderState *state = g_new0 (GtkTextRenderState, 1);
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state->widget = widget;
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state->fg_gc = gdk_gc_new (drawable);
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state->bg_gc = gdk_gc_new (drawable);
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state->clip_rect = *clip_rect;
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return state;
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}
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static void
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gtk_text_render_state_destroy (GtkTextRenderState *state)
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{
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gdk_gc_unref (state->fg_gc);
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gdk_gc_unref (state->bg_gc);
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g_free (state);
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}
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static void
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gtk_text_render_state_set_color (GtkTextRenderState *state,
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GdkGC *gc,
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GdkColor *color)
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{
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gdk_colormap_alloc_color (gtk_widget_get_colormap (state->widget), color, FALSE, TRUE);
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gdk_gc_set_foreground (gc, color);
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}
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static void
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gtk_text_render_state_update (GtkTextRenderState *state,
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GtkTextAppearance *new_appearance)
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{
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if (!state->last_appearance ||
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!gdk_color_equal (&new_appearance->fg_color, &state->last_appearance->fg_color))
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gtk_text_render_state_set_color (state, state->fg_gc, &new_appearance->fg_color);
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if (!state->last_appearance ||
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new_appearance->fg_stipple != state->last_appearance->fg_stipple)
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{
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if (new_appearance->fg_stipple)
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{
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gdk_gc_set_fill (state->fg_gc, GDK_STIPPLED);
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gdk_gc_set_stipple (state->fg_gc, new_appearance->fg_stipple);
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}
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else
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{
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gdk_gc_set_fill (state->fg_gc, GDK_SOLID);
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}
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}
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if (new_appearance->draw_bg)
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{
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if (!state->last_bg_appearance ||
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!gdk_color_equal (&new_appearance->bg_color, &state->last_bg_appearance->bg_color))
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gtk_text_render_state_set_color (state, state->bg_gc, &new_appearance->bg_color);
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if (!state->last_bg_appearance ||
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new_appearance->bg_stipple != state->last_bg_appearance->bg_stipple)
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{
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if (new_appearance->bg_stipple)
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{
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gdk_gc_set_fill (state->bg_gc, GDK_STIPPLED);
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gdk_gc_set_stipple (state->bg_gc, new_appearance->bg_stipple);
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}
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else
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{
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gdk_gc_set_fill (state->bg_gc, GDK_SOLID);
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}
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}
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state->last_bg_appearance = new_appearance;
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}
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state->last_appearance = new_appearance;
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}
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static void
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get_shape_extents (PangoLayoutRun *run,
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PangoRectangle *ink_rect,
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PangoRectangle *logical_rect)
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{
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GSList *tmp_list = run->item->extra_attrs;
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while (tmp_list)
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{
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PangoAttribute *attr = tmp_list->data;
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if (attr->klass->type == PANGO_ATTR_SHAPE)
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{
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if (logical_rect)
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*logical_rect = ((PangoAttrShape *)attr)->logical_rect;
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if (ink_rect)
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*ink_rect = ((PangoAttrShape *)attr)->ink_rect;
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return;
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}
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tmp_list = tmp_list->next;
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}
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g_assert_not_reached ();
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}
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static void
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render_layout_line (GdkDrawable *drawable,
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GtkTextRenderState *render_state,
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PangoLayoutLine *line,
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GSList **shaped_pointer,
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int x,
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int y,
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gboolean selected)
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{
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GSList *tmp_list = line->runs;
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PangoRectangle overall_rect;
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PangoRectangle logical_rect;
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PangoRectangle ink_rect;
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gint x_off = 0;
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GdkGC *fg_gc;
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pango_layout_line_get_extents (line, NULL, &overall_rect);
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while (tmp_list)
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{
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PangoLayoutRun *run = tmp_list->data;
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GtkTextAppearance *appearance;
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gint risen_y;
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gint shaped_width_pixels = 0;
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gboolean need_ink = FALSE;
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tmp_list = tmp_list->next;
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get_item_properties (run->item, &appearance);
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g_assert (appearance != NULL);
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risen_y = y - PANGO_PIXELS (appearance->rise);
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if (selected)
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{
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fg_gc = render_state->widget->style->text_gc[GTK_STATE_SELECTED];
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}
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else
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{
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gtk_text_render_state_update (render_state, appearance);
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fg_gc = render_state->fg_gc;
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}
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if (appearance->underline != PANGO_UNDERLINE_NONE ||
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appearance->strikethrough)
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need_ink = TRUE;
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if (appearance->is_text)
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{
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if (need_ink)
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pango_glyph_string_extents (run->glyphs, run->item->analysis.font,
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&ink_rect, &logical_rect);
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else
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pango_glyph_string_extents (run->glyphs, run->item->analysis.font,
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NULL, &logical_rect);
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}
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else
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{
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if (need_ink)
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get_shape_extents (run, &ink_rect, &logical_rect);
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else
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get_shape_extents (run, NULL, &logical_rect);
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}
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if (appearance->draw_bg && !selected)
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gdk_draw_rectangle (drawable, render_state->bg_gc, TRUE,
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x + PANGO_PIXELS (x_off) + PANGO_PIXELS (logical_rect.x),
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risen_y + PANGO_PIXELS (logical_rect.y),
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PANGO_PIXELS (logical_rect.width),
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PANGO_PIXELS (logical_rect.height));
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if (appearance->is_text)
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gdk_draw_glyphs (drawable, fg_gc,
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run->item->analysis.font,
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x + PANGO_PIXELS (x_off),
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risen_y, run->glyphs);
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else
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{
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GObject *shaped = (*shaped_pointer)->data;
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*shaped_pointer = (*shaped_pointer)->next;
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if (GDK_IS_PIXBUF (shaped))
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{
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gint width, height;
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GdkRectangle pixbuf_rect, draw_rect;
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GdkPixbuf *pixbuf;
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pixbuf = GDK_PIXBUF (shaped);
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width = gdk_pixbuf_get_width (pixbuf);
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height = gdk_pixbuf_get_height (pixbuf);
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pixbuf_rect.x = x + x_off / PANGO_SCALE;
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pixbuf_rect.y = risen_y - height;
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pixbuf_rect.width = width;
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pixbuf_rect.height = height;
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if (gdk_rectangle_intersect (&pixbuf_rect, &render_state->clip_rect,
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&draw_rect))
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{
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GdkBitmap *mask = NULL;
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if (gdk_pixbuf_get_has_alpha (pixbuf))
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{
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mask = gdk_pixmap_new (drawable,
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gdk_pixbuf_get_width (pixbuf),
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gdk_pixbuf_get_height (pixbuf),
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1);
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gdk_pixbuf_render_threshold_alpha (pixbuf, mask,
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0, 0, 0, 0,
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gdk_pixbuf_get_width (pixbuf),
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gdk_pixbuf_get_height (pixbuf),
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128);
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}
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if (mask)
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{
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gdk_gc_set_clip_mask (render_state->fg_gc, mask);
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gdk_gc_set_clip_origin (render_state->fg_gc,
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pixbuf_rect.x, pixbuf_rect.y);
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}
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gdk_pixbuf_render_to_drawable (pixbuf,
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drawable,
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render_state->fg_gc,
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draw_rect.x - pixbuf_rect.x,
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draw_rect.y - pixbuf_rect.y,
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draw_rect.x, draw_rect.y,
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draw_rect.width,
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draw_rect.height,
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GDK_RGB_DITHER_NORMAL,
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0, 0);
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if (mask)
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{
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gdk_gc_set_clip_rectangle (render_state->fg_gc,
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&render_state->clip_rect);
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g_object_unref (G_OBJECT (mask));
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}
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}
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shaped_width_pixels = width;
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}
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else if (GTK_IS_WIDGET (shaped))
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{
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gint width, height;
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GdkRectangle draw_rect;
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GtkWidget *widget;
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widget = GTK_WIDGET (shaped);
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width = widget->allocation.width;
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height = widget->allocation.height;
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g_print ("widget allocation at %d,%d %d x %d\n",
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widget->allocation.x,
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widget->allocation.y,
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widget->allocation.width,
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widget->allocation.height);
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if (GTK_WIDGET_DRAWABLE (widget) &&
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gdk_rectangle_intersect (&widget->allocation,
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&render_state->clip_rect,
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&draw_rect))
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{
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g_print ("drawing widget area %d,%d %d x %d\n",
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draw_rect.x,
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draw_rect.y,
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draw_rect.width,
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draw_rect.height);
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gtk_widget_draw (widget, &draw_rect);
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}
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shaped_width_pixels = width;
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}
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else
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g_assert_not_reached (); /* not a pixbuf or widget */
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}
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switch (appearance->underline)
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{
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case PANGO_UNDERLINE_NONE:
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break;
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case PANGO_UNDERLINE_DOUBLE:
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g_assert (need_ink);
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gdk_draw_line (drawable, fg_gc,
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x + (x_off + ink_rect.x) / PANGO_SCALE - 1,
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risen_y + 3,
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x + (x_off + ink_rect.x + ink_rect.width) / PANGO_SCALE,
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risen_y + 3);
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/* Fall through */
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case PANGO_UNDERLINE_SINGLE:
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g_assert (need_ink);
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gdk_draw_line (drawable, fg_gc,
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x + (x_off + ink_rect.x) / PANGO_SCALE - 1,
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risen_y + 1,
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x + (x_off + ink_rect.x + ink_rect.width) / PANGO_SCALE,
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risen_y + 1);
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break;
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case PANGO_UNDERLINE_LOW:
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g_assert (need_ink);
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gdk_draw_line (drawable, fg_gc,
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x + (x_off + ink_rect.x) / PANGO_SCALE - 1,
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risen_y + (ink_rect.y + ink_rect.height) / PANGO_SCALE + 1,
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x + (x_off + ink_rect.x + ink_rect.width) / PANGO_SCALE,
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risen_y + (ink_rect.y + ink_rect.height) / PANGO_SCALE + 1);
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break;
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}
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if (appearance->strikethrough)
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{
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gint strikethrough_y = risen_y + (0.3 * logical_rect.y) / PANGO_SCALE;
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g_assert (need_ink);
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gdk_draw_line (drawable, fg_gc,
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x + (x_off + ink_rect.x) / PANGO_SCALE - 1, strikethrough_y,
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x + (x_off + ink_rect.x + ink_rect.width) / PANGO_SCALE, strikethrough_y);
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}
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if (appearance->is_text)
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x_off += logical_rect.width;
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else
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x_off += shaped_width_pixels * PANGO_SCALE;
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}
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}
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static void
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render_para (GdkDrawable *drawable,
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GtkTextRenderState *render_state,
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GtkTextLineDisplay *line_display,
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/* Top-left corner of paragraph including all margins */
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int x,
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int y,
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int selection_start_index,
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int selection_end_index)
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{
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GSList *shaped_pointer = line_display->shaped_objects;
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PangoLayout *layout = line_display->layout;
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int byte_offset = 0;
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PangoLayoutIter *iter;
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PangoRectangle layout_logical;
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int screen_width;
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gboolean first = TRUE;
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iter = pango_layout_get_iter (layout);
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pango_layout_iter_get_layout_extents (iter, NULL, &layout_logical);
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/* Adjust for margins */
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layout_logical.x += line_display->x_offset * PANGO_SCALE;
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layout_logical.y += line_display->top_margin * PANGO_SCALE;
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screen_width = line_display->total_width;
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do
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{
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PangoLayoutLine *line = pango_layout_iter_get_line (iter);
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int selection_y, selection_height;
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int first_y, last_y;
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PangoRectangle line_rect;
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int baseline;
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pango_layout_iter_get_line_extents (iter, NULL, &line_rect);
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baseline = pango_layout_iter_get_baseline (iter);
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pango_layout_iter_get_line_yrange (iter, &first_y, &last_y);
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/* Adjust for margins */
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line_rect.x += line_display->x_offset * PANGO_SCALE;
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line_rect.y += line_display->top_margin * PANGO_SCALE;
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baseline += line_display->top_margin * PANGO_SCALE;
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/* 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,
|
|
render_state->widget->style->base_gc[GTK_STATE_SELECTED],
|
|
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 (render_state->widget->style->text_gc [GTK_STATE_SELECTED], clip_region);
|
|
gdk_gc_set_clip_region (render_state->widget->style->base_gc [GTK_STATE_SELECTED], clip_region);
|
|
|
|
gdk_draw_rectangle (drawable,
|
|
render_state->widget->style->base_gc[GTK_STATE_SELECTED],
|
|
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 (render_state->widget->style->text_gc [GTK_STATE_SELECTED], NULL);
|
|
gdk_gc_set_clip_region (render_state->widget->style->base_gc [GTK_STATE_SELECTED], 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,
|
|
render_state->widget->style->base_gc[GTK_STATE_SELECTED],
|
|
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,
|
|
render_state->widget->style->base_gc[GTK_STATE_SELECTED],
|
|
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->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,
|
|
/* 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;
|
|
|
|
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. */
|
|
|
|
cursor_list = line_display->cursors;
|
|
while (cursor_list)
|
|
{
|
|
GtkTextCursorDisplay *cursor = cursor_list->data;
|
|
GdkGC *gc;
|
|
|
|
if (cursor->is_strong)
|
|
gc = widget->style->base_gc[GTK_STATE_SELECTED];
|
|
else
|
|
gc = widget->style->text_gc[GTK_STATE_NORMAL];
|
|
|
|
gdk_gc_set_clip_rectangle(gc, &clip);
|
|
gdk_draw_line (drawable, gc,
|
|
line_display->x_offset + cursor->x - x_offset,
|
|
current_y + line_display->top_margin + cursor->y,
|
|
line_display->x_offset + cursor->x - x_offset,
|
|
current_y + line_display->top_margin + cursor->y + cursor->height - 1);
|
|
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);
|
|
}
|