8bdc0bf97c
2005-11-10 Michael Natterer <mitch@imendio.com> Applied patch from maemo-gtk that addresses many issues wrt display migration and display closing (bug #85715). * gdk/gdkdisplay.c (gdk_display_dispose): don't just set the default display to NULL when it's closed. Instead set the most recently opened display as new default (if one exists). * gdk/gdkpango.c (on_renderer_display_closed): fixed signature of this callback. * gdk/gdkscreen.c (gdk_screen_dispose): check if the GCs still exist before unrefing them. * gdk/gdkwindow.c (_gdk_window_destroy_hierarchy): if the screen is closed, allow destruction of the root window. * gdk/x11/gdkdisplay-x11.c: moved some stuff from finalize() to dispose(), free stuff that was leaked before. * gdk/x11/gdkevents-x11.c (_gdk_x11_events_uninit_screen): check if the xsettings_client still exists before destroying it. * gdk/x11/gdkkeys-x11.c: added finalization and free the allocated X resources. * gdk/x11/gdkpixmap-x11.c: moved stuff from finalize() to new dispose() implementation. * gdk/x11/gdkscreen-x11.c: moved stuff from finalize() to dispose() and check if it still exists before unrefing it. Set their pointers to NULL/None *after* upchaining in dispose(), because X11 implementations of members of the parent class still need them for their own destruction. * gdk/x11/gdkvisual-x11.c: removed finalize() implementation which was g_error()ing when finalizing a visual. * gtk/gtkclipboard.c (gtk_clipboard_finalize): don't use get_clipboard_widget() because it would create the widget if it doesn't exist. Use g_object_get_data() directly instead. * gtk/gtktextdisplay.c (on_renderer_display_closed): fixed signature of this callback.
860 lines
29 KiB
C
860 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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#define GTK_TEXT_USE_INTERNAL_UNSUPPORTED_API
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#include <config.h>
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#include "gtktextdisplay.h"
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#include "gtkintl.h"
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#include "gtkalias.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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#define GTK_TYPE_TEXT_RENDERER (_gtk_text_renderer_get_type())
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#define GTK_TEXT_RENDERER(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GTK_TYPE_TEXT_RENDERER, GtkTextRenderer))
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#define GTK_IS_TEXT_RENDERER(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GTK_TYPE_TEXT_RENDERER))
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#define GTK_TEXT_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_TEXT_RENDERER, GtkTextRendererClass))
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#define GTK_IS_TEXT_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_TEXT_RENDERER))
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#define GTK_TEXT_RENDERER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_TEXT_RENDERER, GtkTextRendererClass))
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typedef struct _GtkTextRenderer GtkTextRenderer;
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typedef struct _GtkTextRendererClass GtkTextRendererClass;
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struct _GtkTextRenderer
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{
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GdkPangoRenderer parent_instance;
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GdkScreen *screen;
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GtkWidget *widget;
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GdkDrawable *drawable;
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GdkRectangle clip_rect;
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GdkColor *error_color; /* Error underline color for this widget */
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GList *widgets; /* widgets encountered when drawing */
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gboolean selected;
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};
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struct _GtkTextRendererClass
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{
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GdkPangoRendererClass parent_class;
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};
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G_DEFINE_TYPE (GtkTextRenderer, _gtk_text_renderer, GDK_TYPE_PANGO_RENDERER)
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static GdkColor *
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text_renderer_get_error_color (GtkTextRenderer *text_renderer)
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{
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static const GdkColor red = { 0, 0xffff, 0, 0 };
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if (!text_renderer->error_color)
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gtk_widget_style_get (text_renderer->widget,
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"error-underline_color", &text_renderer->error_color,
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NULL);
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if (!text_renderer->error_color)
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text_renderer->error_color = gdk_color_copy (&red);
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return text_renderer->error_color;
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}
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static void
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text_renderer_set_gdk_color (GtkTextRenderer *text_renderer,
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PangoRenderPart part,
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GdkColor *gdk_color)
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{
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PangoRenderer *renderer = PANGO_RENDERER (text_renderer);
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if (gdk_color)
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{
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PangoColor color;
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color.red = gdk_color->red;
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color.green = gdk_color->green;
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color.blue = gdk_color->blue;
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pango_renderer_set_color (renderer, part, &color);
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}
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else
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pango_renderer_set_color (renderer, part, NULL);
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}
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static GtkTextAppearance *
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get_item_appearance (PangoItem *item)
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{
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GSList *tmp_list = item->analysis.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 == gtk_text_attr_appearance_type)
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return &((GtkTextAttrAppearance *)attr)->appearance;
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tmp_list = tmp_list->next;
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}
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return NULL;
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}
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static void
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gtk_text_renderer_prepare_run (PangoRenderer *renderer,
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PangoLayoutRun *run)
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{
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GtkTextRenderer *text_renderer = GTK_TEXT_RENDERER (renderer);
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GdkPangoRenderer *gdk_renderer = GDK_PANGO_RENDERER (renderer);
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GdkColor *bg_color, *fg_color, *underline_color;
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GdkPixmap *fg_stipple, *bg_stipple;
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GtkTextAppearance *appearance;
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PANGO_RENDERER_CLASS (_gtk_text_renderer_parent_class)->prepare_run (renderer, run);
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appearance = get_item_appearance (run->item);
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g_assert (appearance != NULL);
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if (appearance->draw_bg && !text_renderer->selected)
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bg_color = &appearance->bg_color;
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else
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bg_color = NULL;
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text_renderer_set_gdk_color (text_renderer, PANGO_RENDER_PART_BACKGROUND, bg_color);
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if (text_renderer->selected)
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{
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if (GTK_WIDGET_HAS_FOCUS (text_renderer->widget))
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fg_color = &text_renderer->widget->style->text[GTK_STATE_SELECTED];
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else
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fg_color = &text_renderer->widget->style->text[GTK_STATE_ACTIVE];
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}
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else
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fg_color = &appearance->fg_color;
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text_renderer_set_gdk_color (text_renderer, PANGO_RENDER_PART_FOREGROUND, fg_color);
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text_renderer_set_gdk_color (text_renderer, PANGO_RENDER_PART_STRIKETHROUGH, fg_color);
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if (appearance->underline == PANGO_UNDERLINE_ERROR)
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underline_color = text_renderer_get_error_color (text_renderer);
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else
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underline_color = fg_color;
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text_renderer_set_gdk_color (text_renderer, PANGO_RENDER_PART_UNDERLINE, underline_color);
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fg_stipple = appearance->fg_stipple;
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if (fg_stipple && text_renderer->screen != gdk_drawable_get_screen (fg_stipple))
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{
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g_warning ("gtk_text_renderer_prepare_run:\n"
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"The foreground stipple bitmap has been created on the wrong screen.\n"
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"Ignoring the stipple bitmap information.");
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fg_stipple = NULL;
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}
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gdk_pango_renderer_set_stipple (gdk_renderer, PANGO_RENDER_PART_FOREGROUND, fg_stipple);
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gdk_pango_renderer_set_stipple (gdk_renderer, PANGO_RENDER_PART_STRIKETHROUGH, fg_stipple);
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gdk_pango_renderer_set_stipple (gdk_renderer, PANGO_RENDER_PART_UNDERLINE, fg_stipple);
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bg_stipple = appearance->draw_bg ? appearance->bg_stipple : NULL;
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if (bg_stipple && text_renderer->screen != gdk_drawable_get_screen (bg_stipple))
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{
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g_warning ("gtk_text_renderer_prepare_run:\n"
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"The background stipple bitmap has been created on the wrong screen.\n"
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"Ignoring the stipple bitmap information.");
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bg_stipple = NULL;
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}
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gdk_pango_renderer_set_stipple (gdk_renderer, PANGO_RENDER_PART_BACKGROUND, bg_stipple);
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}
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static void
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gtk_text_renderer_draw_shape (PangoRenderer *renderer,
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PangoAttrShape *attr,
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int x,
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int y)
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{
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GtkTextRenderer *text_renderer = GTK_TEXT_RENDERER (renderer);
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GdkGC *fg_gc;
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if (text_renderer->selected)
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{
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if (GTK_WIDGET_HAS_FOCUS (text_renderer->widget))
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fg_gc = text_renderer->widget->style->text_gc[GTK_STATE_SELECTED];
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else
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fg_gc = text_renderer->widget->style->text_gc[GTK_STATE_SELECTED];
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}
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else
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fg_gc = text_renderer->widget->style->text_gc[GTK_STATE_NORMAL];
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if (attr->data == NULL)
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{
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/* This happens if we have an empty widget anchor. Draw
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* something empty-looking.
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*/
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GdkRectangle shape_rect, draw_rect;
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shape_rect.x = PANGO_PIXELS (x);
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shape_rect.y = PANGO_PIXELS (y + attr->logical_rect.y);
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shape_rect.width = PANGO_PIXELS (x + attr->logical_rect.width) - shape_rect.x;
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shape_rect.height = PANGO_PIXELS (y + attr->logical_rect.y + attr->logical_rect.height) - shape_rect.y;
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if (gdk_rectangle_intersect (&shape_rect, &text_renderer->clip_rect,
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&draw_rect))
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{
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gdk_draw_rectangle (text_renderer->drawable, fg_gc,
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FALSE, shape_rect.x, shape_rect.y,
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shape_rect.width, shape_rect.height);
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gdk_draw_line (text_renderer->drawable, fg_gc,
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shape_rect.x, shape_rect.y,
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shape_rect.x + shape_rect.width,
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shape_rect.y + shape_rect.height);
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gdk_draw_line (text_renderer->drawable, fg_gc,
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shape_rect.x + shape_rect.width, shape_rect.y,
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shape_rect.x,
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shape_rect.y + shape_rect.height);
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}
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}
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else if (GDK_IS_PIXBUF (attr->data))
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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 (attr->data);
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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 = PANGO_PIXELS (x);
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pixbuf_rect.y = PANGO_PIXELS (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, &text_renderer->clip_rect,
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&draw_rect))
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{
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gdk_draw_pixbuf (text_renderer->drawable,
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fg_gc,
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pixbuf,
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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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}
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}
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else if (GTK_IS_WIDGET (attr->data))
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{
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GtkWidget *widget;
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widget = GTK_WIDGET (attr->data);
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text_renderer->widgets = g_list_prepend (text_renderer->widgets,
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g_object_ref (widget));
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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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static void
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gtk_text_renderer_finalize (GObject *object)
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{
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G_OBJECT_CLASS (_gtk_text_renderer_parent_class)->finalize (object);
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}
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static void
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_gtk_text_renderer_init (GtkTextRenderer *renderer)
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{
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}
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static void
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_gtk_text_renderer_class_init (GtkTextRendererClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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PangoRendererClass *renderer_class = PANGO_RENDERER_CLASS (klass);
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renderer_class->prepare_run = gtk_text_renderer_prepare_run;
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renderer_class->draw_shape = gtk_text_renderer_draw_shape;
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object_class->finalize = gtk_text_renderer_finalize;
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}
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static void
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text_renderer_set_selected (GtkTextRenderer *text_renderer,
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gboolean selected)
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{
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text_renderer->selected = selected;
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}
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static void
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text_renderer_begin (GtkTextRenderer *text_renderer,
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GtkWidget *widget,
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GdkDrawable *drawable,
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GdkRectangle *clip_rect)
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{
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text_renderer->widget = widget;
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text_renderer->drawable = drawable;
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text_renderer->clip_rect = *clip_rect;
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gdk_pango_renderer_set_drawable (GDK_PANGO_RENDERER (text_renderer), drawable);
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gdk_pango_renderer_set_gc (GDK_PANGO_RENDERER (text_renderer),
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widget->style->text_gc[widget->state]);
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}
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/* Returns a GSList of (referenced) widgets encountered while drawing.
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*/
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static GList *
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text_renderer_end (GtkTextRenderer *text_renderer)
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{
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GList *widgets = text_renderer->widgets;
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text_renderer->widget = NULL;
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text_renderer->drawable = NULL;
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text_renderer->widgets = NULL;
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if (text_renderer->error_color)
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{
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gdk_color_free (text_renderer->error_color);
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text_renderer->error_color = NULL;
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}
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gdk_pango_renderer_set_drawable (GDK_PANGO_RENDERER (text_renderer), NULL);
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gdk_pango_renderer_set_gc (GDK_PANGO_RENDERER (text_renderer), NULL);
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return widgets;
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}
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static GdkRegion *
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get_selected_clip (GtkTextRenderer *text_renderer,
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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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{
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gint *ranges;
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gint n_ranges, i;
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GdkRegion *clip_region = gdk_region_new ();
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GdkRegion *tmp_region;
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pango_layout_line_get_x_ranges (line, start_index, end_index, &ranges, &n_ranges);
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for (i=0; i < n_ranges; i++)
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{
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GdkRectangle rect;
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rect.x = x + PANGO_PIXELS (ranges[2*i]);
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rect.y = y;
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rect.width = PANGO_PIXELS (ranges[2*i + 1]) - PANGO_PIXELS (ranges[2*i]);
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rect.height = height;
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gdk_region_union_with_rect (clip_region, &rect);
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}
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tmp_region = gdk_region_rectangle (&text_renderer->clip_rect);
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gdk_region_intersect (clip_region, tmp_region);
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gdk_region_destroy (tmp_region);
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g_free (ranges);
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return clip_region;
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|
}
|
|
|
|
static void
|
|
render_para (GtkTextRenderer *text_renderer,
|
|
GtkTextLineDisplay *line_display,
|
|
/* Top-left corner of paragraph including all margins */
|
|
int x,
|
|
int y,
|
|
int selection_start_index,
|
|
int selection_end_index)
|
|
{
|
|
PangoLayout *layout = line_display->layout;
|
|
int byte_offset = 0;
|
|
PangoLayoutIter *iter;
|
|
PangoRectangle layout_logical;
|
|
int screen_width;
|
|
GdkGC *selection_gc, *fg_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 (text_renderer->widget))
|
|
state = GTK_STATE_SELECTED;
|
|
else
|
|
state = GTK_STATE_ACTIVE;
|
|
|
|
selection_gc = text_renderer->widget->style->base_gc [state];
|
|
fg_gc = text_renderer->widget->style->text_gc[text_renderer->widget->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 (text_renderer->drawable,
|
|
selection_gc,
|
|
TRUE,
|
|
x + line_display->left_margin,
|
|
selection_y,
|
|
screen_width,
|
|
selection_height);
|
|
|
|
text_renderer_set_selected (text_renderer, TRUE);
|
|
pango_renderer_draw_layout_line (PANGO_RENDERER (text_renderer),
|
|
line,
|
|
PANGO_SCALE * x + line_rect.x,
|
|
PANGO_SCALE * y + baseline);
|
|
}
|
|
else
|
|
{
|
|
if (line_display->pg_bg_color)
|
|
{
|
|
GdkGC *bg_gc;
|
|
|
|
bg_gc = gdk_gc_new (text_renderer->drawable);
|
|
gdk_gc_set_fill (bg_gc, GDK_SOLID);
|
|
gdk_gc_set_rgb_fg_color (bg_gc, line_display->pg_bg_color);
|
|
|
|
gdk_draw_rectangle (text_renderer->drawable,
|
|
bg_gc,
|
|
TRUE,
|
|
x + line_display->left_margin,
|
|
selection_y,
|
|
screen_width,
|
|
selection_height);
|
|
|
|
g_object_unref (bg_gc);
|
|
}
|
|
|
|
text_renderer_set_selected (text_renderer, FALSE);
|
|
pango_renderer_draw_layout_line (PANGO_RENDERER (text_renderer),
|
|
line,
|
|
PANGO_SCALE * x + line_rect.x,
|
|
PANGO_SCALE * y + baseline);
|
|
|
|
/* Check if some part of the line is selected; the newline
|
|
* that is after line->length for the last line of the
|
|
* paragraph counts as part of the line for this
|
|
*/
|
|
if ((selection_start_index < byte_offset + line->length ||
|
|
(selection_start_index == byte_offset + line->length && pango_layout_iter_at_last_line (iter))) &&
|
|
selection_end_index > byte_offset)
|
|
{
|
|
GdkRegion *clip_region = get_selected_clip (text_renderer, layout, line,
|
|
x + line_display->x_offset,
|
|
selection_y,
|
|
selection_height,
|
|
selection_start_index, selection_end_index);
|
|
|
|
/* When we change the clip on the foreground GC, we have to set
|
|
* it on the rendererer again, since the rendererer might have
|
|
* copied the GC to change attributes.
|
|
*/
|
|
gdk_pango_renderer_set_gc (GDK_PANGO_RENDERER (text_renderer), NULL);
|
|
gdk_gc_set_clip_region (selection_gc, clip_region);
|
|
gdk_gc_set_clip_region (fg_gc, clip_region);
|
|
gdk_pango_renderer_set_gc (GDK_PANGO_RENDERER (text_renderer), fg_gc);
|
|
|
|
gdk_draw_rectangle (text_renderer->drawable,
|
|
selection_gc,
|
|
TRUE,
|
|
x + PANGO_PIXELS (line_rect.x),
|
|
selection_y,
|
|
PANGO_PIXELS (line_rect.width),
|
|
selection_height);
|
|
|
|
text_renderer_set_selected (text_renderer, TRUE);
|
|
pango_renderer_draw_layout_line (PANGO_RENDERER (text_renderer),
|
|
line,
|
|
PANGO_SCALE * x + line_rect.x,
|
|
PANGO_SCALE * y + baseline);
|
|
|
|
gdk_pango_renderer_set_gc (GDK_PANGO_RENDERER (text_renderer), NULL);
|
|
gdk_gc_set_clip_region (selection_gc, NULL);
|
|
gdk_gc_set_clip_region (fg_gc, NULL);
|
|
gdk_pango_renderer_set_gc (GDK_PANGO_RENDERER (text_renderer), fg_gc);
|
|
|
|
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 (text_renderer->drawable,
|
|
selection_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 (text_renderer->drawable,
|
|
selection_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 void
|
|
on_renderer_display_closed (GdkDisplay *display,
|
|
gboolean is_error,
|
|
GtkTextRenderer *text_renderer)
|
|
{
|
|
g_signal_handlers_disconnect_by_func (text_renderer->screen,
|
|
(gpointer)on_renderer_display_closed,
|
|
text_renderer);
|
|
g_object_set_data (G_OBJECT (text_renderer->screen), I_("gtk-text-renderer"), NULL);
|
|
}
|
|
|
|
static GtkTextRenderer *
|
|
get_text_renderer (GdkScreen *screen)
|
|
{
|
|
GtkTextRenderer *text_renderer;
|
|
|
|
g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
|
|
|
|
text_renderer = g_object_get_data (G_OBJECT (screen), "gtk-text-renderer");
|
|
if (!text_renderer)
|
|
{
|
|
text_renderer = g_object_new (GTK_TYPE_TEXT_RENDERER, "screen", screen, NULL);
|
|
text_renderer->screen = screen;
|
|
|
|
g_object_set_data_full (G_OBJECT (screen), I_("gtk-text-renderer"), text_renderer,
|
|
(GDestroyNotify)g_object_unref);
|
|
|
|
g_signal_connect_object (gdk_screen_get_display (screen), "closed",
|
|
G_CALLBACK (on_renderer_display_closed),
|
|
text_renderer, 0);
|
|
}
|
|
|
|
return text_renderer;
|
|
}
|
|
|
|
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,
|
|
/* widgets to expose */
|
|
GList **widgets)
|
|
{
|
|
GdkRectangle clip;
|
|
gint current_y;
|
|
GSList *cursor_list;
|
|
GtkTextRenderer *text_renderer;
|
|
GtkTextIter selection_start, selection_end;
|
|
gboolean have_selection = FALSE;
|
|
GSList *line_list;
|
|
GSList *tmp_list;
|
|
GList *tmp_widgets;
|
|
|
|
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;
|
|
|
|
text_renderer = get_text_renderer (gdk_drawable_get_screen (drawable));
|
|
|
|
text_renderer_begin (text_renderer, widget, drawable, &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);
|
|
line_end = line_start;
|
|
if (!gtk_text_iter_ends_line (&line_end))
|
|
gtk_text_iter_forward_to_line_end (&line_end);
|
|
byte_count = gtk_text_iter_get_visible_line_index (&line_end);
|
|
|
|
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_visible_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_visible_line_index (&selection_end);
|
|
else
|
|
selection_end_index = byte_count + 1; /* + 1 to flag past-the-end */
|
|
}
|
|
}
|
|
|
|
render_para (text_renderer, 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;
|
|
|
|
dir = line_display->direction;
|
|
if (have_strong && have_weak)
|
|
{
|
|
if (!cursor->is_strong)
|
|
dir = (dir == GTK_TEXT_DIR_RTL) ? GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL;
|
|
}
|
|
|
|
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;
|
|
|
|
gtk_draw_insertion_cursor (widget, drawable, &clip, &cursor_location,
|
|
cursor->is_strong,
|
|
dir, have_strong && have_weak);
|
|
|
|
cursor_list = cursor_list->next;
|
|
}
|
|
} /* line_display->height > 0 */
|
|
|
|
current_y += line_display->height;
|
|
gtk_text_layout_free_line_display (layout, line_display);
|
|
|
|
tmp_list = g_slist_next (tmp_list);
|
|
}
|
|
|
|
gtk_text_layout_wrap_loop_end (layout);
|
|
|
|
tmp_widgets = text_renderer_end (text_renderer);
|
|
if (widgets)
|
|
*widgets = tmp_widgets;
|
|
else
|
|
{
|
|
g_list_foreach (tmp_widgets, (GFunc)g_object_unref, NULL);
|
|
g_list_free (tmp_widgets);
|
|
}
|
|
|
|
g_slist_free (line_list);
|
|
}
|
|
|
|
#define __GTK_TEXT_DISPLAY_C__
|
|
#include "gtkaliasdef.c"
|