mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-11 03:10:09 +00:00
6e5a269f38
Thu Dec 14 20:22:31 2000 Owen Taylor <otaylor@redhat.com>
* gdk/{gdkdrawable.[ch],gdkpixmap.c,gdkwindow.c,x11/gdkwindow.c}:
Add two virtualized functions gdk_drawable_get_clip_region - to
get the clip region when drawing.
* gdk/gdkwindow.c (gdk_window_invalidate_rect): Rewrite to simple
use invalidate_region.
* gdk/gdkwindow.c (gdk_window_invalidate_region): Clip to visible
region.
* acconfig.h configure.in: Check for Xft. For now, assume
that if Xft is found, Pango was compiled with Xft support
as well.
* gdk/gdkcolor.h gdk/x11/gdkcolor-x11.c: Add
gdk_colormap_query_color().
* gdk/x11/gdkdrawable-x11.c (gdk_x11_draw_glyphs): Draw
with Xft if appropriate.
* gdk/x11/gdkpango-x11.c (gdk_pango_context_get): Create
a pangoxft context if we have XFT and the environment
variable GD_USE_XFT is set.
* gdk/x11/gdkx.h (struct _GdkGCX11): Cache the fg_pixel
and also possibly an XftDraw structure.
* gtk/gtkfontsel.c: Handle the case where the font from the
style doesn't match any of the fonts a bit better.
* gtk/testgtk.c: Add tabs between directional segments for
hebrew/arabic test. (Not really necessary, just a little
prettier.)
587 lines
16 KiB
C
587 lines
16 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU 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
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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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 "gdkdrawable.h"
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#include "gdkinternals.h"
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#include "gdkwindow.h"
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static GdkDrawable* gdk_drawable_real_get_composite_drawable (GdkDrawable *drawable,
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gint x,
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gint y,
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gint width,
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gint height,
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gint *composite_x_offset,
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gint *composite_y_offset);
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static GdkRegion * gdk_drawable_real_get_visible_region (GdkDrawable *drawable);
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static void gdk_drawable_class_init (GdkDrawableClass *klass);
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GType
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gdk_drawable_get_type (void)
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{
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static GType object_type = 0;
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if (!object_type)
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{
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static const GTypeInfo object_info =
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{
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sizeof (GdkDrawableClass),
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(GBaseInitFunc) NULL,
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(GBaseFinalizeFunc) NULL,
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(GClassInitFunc) gdk_drawable_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GdkDrawable),
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0, /* n_preallocs */
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(GInstanceInitFunc) NULL,
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};
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object_type = g_type_register_static (G_TYPE_OBJECT,
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"GdkDrawable",
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&object_info, 0);
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}
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return object_type;
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}
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static void
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gdk_drawable_class_init (GdkDrawableClass *klass)
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{
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klass->get_composite_drawable = gdk_drawable_real_get_composite_drawable;
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/* Default implementation for clip and visible region is the same */
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klass->get_clip_region = gdk_drawable_real_get_visible_region;
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klass->get_visible_region = gdk_drawable_real_get_visible_region;
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}
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/* Manipulation of drawables
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*/
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void
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gdk_drawable_set_data (GdkDrawable *drawable,
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const gchar *key,
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gpointer data,
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GDestroyNotify destroy_func)
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{
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g_return_if_fail (GDK_IS_DRAWABLE (drawable));
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g_object_set_qdata_full (G_OBJECT (drawable),
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g_quark_from_string (key),
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data,
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destroy_func);
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}
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gpointer
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gdk_drawable_get_data (GdkDrawable *drawable,
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const gchar *key)
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{
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g_return_val_if_fail (GDK_IS_DRAWABLE (drawable), NULL);
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return g_object_get_qdata (G_OBJECT (drawable),
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g_quark_try_string (key));
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}
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void
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gdk_drawable_get_size (GdkDrawable *drawable,
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gint *width,
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gint *height)
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{
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g_return_if_fail (GDK_IS_DRAWABLE (drawable));
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GDK_DRAWABLE_GET_CLASS (drawable)->get_size (drawable, width, height);
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}
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GdkVisual*
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gdk_drawable_get_visual (GdkDrawable *drawable)
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{
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g_return_val_if_fail (GDK_IS_DRAWABLE (drawable), NULL);
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return GDK_DRAWABLE_GET_CLASS (drawable)->get_visual (drawable);
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}
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gint
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gdk_drawable_get_depth (GdkDrawable *drawable)
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{
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g_return_val_if_fail (GDK_IS_DRAWABLE (drawable), 0);
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return GDK_DRAWABLE_GET_CLASS (drawable)->get_depth (drawable);
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}
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void
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gdk_drawable_set_colormap (GdkDrawable *drawable,
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GdkColormap *cmap)
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{
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g_return_if_fail (GDK_IS_DRAWABLE (drawable));
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GDK_DRAWABLE_GET_CLASS (drawable)->set_colormap (drawable, cmap);
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}
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GdkColormap*
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gdk_drawable_get_colormap (GdkDrawable *drawable)
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{
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g_return_val_if_fail (GDK_IS_DRAWABLE (drawable), NULL);
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return GDK_DRAWABLE_GET_CLASS (drawable)->get_colormap (drawable);
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}
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GdkDrawable*
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gdk_drawable_ref (GdkDrawable *drawable)
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{
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return (GdkDrawable *) g_object_ref (G_OBJECT (drawable));
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}
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void
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gdk_drawable_unref (GdkDrawable *drawable)
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{
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g_return_if_fail (GDK_IS_DRAWABLE (drawable));
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g_object_unref (G_OBJECT (drawable));
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}
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/* Drawing
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*/
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void
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gdk_draw_point (GdkDrawable *drawable,
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GdkGC *gc,
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gint x,
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gint y)
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{
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GdkPoint point;
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g_return_if_fail (GDK_IS_DRAWABLE (drawable));
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g_return_if_fail (GDK_IS_GC (gc));
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point.x = x;
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point.y = y;
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GDK_DRAWABLE_GET_CLASS (drawable)->draw_points (drawable, gc, &point, 1);
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}
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void
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gdk_draw_line (GdkDrawable *drawable,
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GdkGC *gc,
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gint x1,
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gint y1,
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gint x2,
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gint y2)
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{
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GdkSegment segment;
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g_return_if_fail (drawable != NULL);
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g_return_if_fail (gc != NULL);
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g_return_if_fail (GDK_IS_DRAWABLE (drawable));
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g_return_if_fail (GDK_IS_GC (gc));
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segment.x1 = x1;
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segment.y1 = y1;
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segment.x2 = x2;
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segment.y2 = y2;
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GDK_DRAWABLE_GET_CLASS (drawable)->draw_segments (drawable, gc, &segment, 1);
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}
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void
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gdk_draw_rectangle (GdkDrawable *drawable,
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GdkGC *gc,
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gint filled,
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gint x,
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gint y,
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gint width,
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gint height)
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{
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g_return_if_fail (GDK_IS_DRAWABLE (drawable));
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g_return_if_fail (GDK_IS_GC (gc));
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if (width < 0 || height < 0)
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{
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gint real_width;
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gint real_height;
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gdk_drawable_get_size (drawable, &real_width, &real_height);
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if (width < 0)
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width = real_width;
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if (height < 0)
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height = real_height;
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}
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GDK_DRAWABLE_GET_CLASS (drawable)->draw_rectangle (drawable, gc, filled, x, y,
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width, height);
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}
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void
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gdk_draw_arc (GdkDrawable *drawable,
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GdkGC *gc,
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gint filled,
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gint x,
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gint y,
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gint width,
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gint height,
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gint angle1,
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gint angle2)
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{
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g_return_if_fail (GDK_IS_DRAWABLE (drawable));
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g_return_if_fail (GDK_IS_GC (gc));
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if (width < 0 || height < 0)
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{
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gint real_width;
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gint real_height;
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gdk_drawable_get_size (drawable, &real_width, &real_height);
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if (width < 0)
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width = real_width;
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if (height < 0)
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height = real_height;
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}
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GDK_DRAWABLE_GET_CLASS (drawable)->draw_arc (drawable, gc, filled,
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x, y, width, height, angle1, angle2);
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}
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void
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gdk_draw_polygon (GdkDrawable *drawable,
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GdkGC *gc,
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gint filled,
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GdkPoint *points,
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gint npoints)
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{
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g_return_if_fail (GDK_IS_DRAWABLE (drawable));
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g_return_if_fail (GDK_IS_GC (gc));
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GDK_DRAWABLE_GET_CLASS (drawable)->draw_polygon (drawable, gc, filled,
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points, npoints);
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}
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/* gdk_draw_string
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*
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* Modified by Li-Da Lho to draw 16 bits and Multibyte strings
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*
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* Interface changed: add "GdkFont *font" to specify font or fontset explicitely
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*/
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void
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gdk_draw_string (GdkDrawable *drawable,
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GdkFont *font,
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GdkGC *gc,
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gint x,
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gint y,
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const gchar *string)
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{
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gdk_draw_text (drawable, font, gc, x, y, string, _gdk_font_strlen (font, string));
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}
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/* gdk_draw_text
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*
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* Modified by Li-Da Lho to draw 16 bits and Multibyte strings
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*
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* Interface changed: add "GdkFont *font" to specify font or fontset explicitely
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*/
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void
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gdk_draw_text (GdkDrawable *drawable,
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GdkFont *font,
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GdkGC *gc,
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gint x,
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gint y,
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const gchar *text,
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gint text_length)
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{
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g_return_if_fail (GDK_IS_DRAWABLE (drawable));
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g_return_if_fail (font != NULL);
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g_return_if_fail (GDK_IS_GC (gc));
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g_return_if_fail (text != NULL);
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GDK_DRAWABLE_GET_CLASS (drawable)->draw_text (drawable, font, gc, x, y, text, text_length);
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}
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void
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gdk_draw_text_wc (GdkDrawable *drawable,
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GdkFont *font,
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GdkGC *gc,
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gint x,
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gint y,
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const GdkWChar *text,
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gint text_length)
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{
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g_return_if_fail (GDK_IS_DRAWABLE (drawable));
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g_return_if_fail (font != NULL);
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g_return_if_fail (GDK_IS_GC (gc));
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g_return_if_fail (text != NULL);
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GDK_DRAWABLE_GET_CLASS (drawable)->draw_text_wc (drawable, font, gc, x, y, text, text_length);
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}
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void
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gdk_draw_drawable (GdkDrawable *drawable,
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GdkGC *gc,
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GdkDrawable *src,
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gint xsrc,
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gint ysrc,
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gint xdest,
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gint ydest,
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gint width,
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gint height)
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{
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GdkDrawable *composite;
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gint composite_x_offset = 0;
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gint composite_y_offset = 0;
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g_return_if_fail (GDK_IS_DRAWABLE (drawable));
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g_return_if_fail (src != NULL);
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g_return_if_fail (GDK_IS_GC (gc));
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if (width < 0 || height < 0)
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{
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gint real_width;
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gint real_height;
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gdk_drawable_get_size (src, &real_width, &real_height);
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if (width < 0)
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width = real_width;
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if (height < 0)
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height = real_height;
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}
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composite =
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GDK_DRAWABLE_GET_CLASS (src)->get_composite_drawable (src,
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xsrc, ysrc,
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width, height,
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&composite_x_offset,
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&composite_y_offset);
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GDK_DRAWABLE_GET_CLASS (drawable)->draw_drawable (drawable, gc, composite,
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xsrc - composite_x_offset,
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ysrc - composite_y_offset,
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xdest, ydest,
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width, height);
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g_object_unref (G_OBJECT (composite));
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}
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void
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gdk_draw_image (GdkDrawable *drawable,
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GdkGC *gc,
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GdkImage *image,
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gint xsrc,
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gint ysrc,
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gint xdest,
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gint ydest,
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gint width,
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gint height)
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{
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g_return_if_fail (GDK_IS_DRAWABLE (drawable));
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g_return_if_fail (image != NULL);
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g_return_if_fail (GDK_IS_GC (gc));
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if (width == -1)
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width = image->width;
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if (height == -1)
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height = image->height;
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GDK_DRAWABLE_GET_CLASS (drawable)->draw_image (drawable, gc, image, xsrc, ysrc,
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xdest, ydest, width, height);
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}
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void
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gdk_draw_points (GdkDrawable *drawable,
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GdkGC *gc,
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GdkPoint *points,
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gint npoints)
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{
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g_return_if_fail (GDK_IS_DRAWABLE (drawable));
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g_return_if_fail ((points != NULL) && (npoints > 0));
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g_return_if_fail (GDK_IS_GC (gc));
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g_return_if_fail (npoints >= 0);
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if (npoints == 0)
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return;
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GDK_DRAWABLE_GET_CLASS (drawable)->draw_points (drawable, gc, points, npoints);
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}
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void
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gdk_draw_segments (GdkDrawable *drawable,
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GdkGC *gc,
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GdkSegment *segs,
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gint nsegs)
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{
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g_return_if_fail (GDK_IS_DRAWABLE (drawable));
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if (nsegs == 0)
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return;
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g_return_if_fail (segs != NULL);
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g_return_if_fail (GDK_IS_GC (gc));
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g_return_if_fail (nsegs >= 0);
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GDK_DRAWABLE_GET_CLASS (drawable)->draw_segments (drawable, gc, segs, nsegs);
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}
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void
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gdk_draw_lines (GdkDrawable *drawable,
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GdkGC *gc,
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GdkPoint *points,
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gint npoints)
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{
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g_return_if_fail (GDK_IS_DRAWABLE (drawable));
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g_return_if_fail (points != NULL);
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g_return_if_fail (GDK_IS_GC (gc));
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g_return_if_fail (npoints >= 0);
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if (npoints == 0)
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return;
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GDK_DRAWABLE_GET_CLASS (drawable)->draw_lines (drawable, gc, points, npoints);
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}
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void
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gdk_draw_glyphs (GdkDrawable *drawable,
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GdkGC *gc,
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PangoFont *font,
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gint x,
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gint y,
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PangoGlyphString *glyphs)
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{
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g_return_if_fail (GDK_IS_DRAWABLE (drawable));
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g_return_if_fail (GDK_IS_GC (gc));
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GDK_DRAWABLE_GET_CLASS (drawable)->draw_glyphs (drawable, gc, font, x, y, glyphs);
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}
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GdkImage*
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gdk_drawable_get_image (GdkDrawable *drawable,
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gint x,
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gint y,
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gint width,
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gint height)
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{
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GdkDrawable *composite;
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gint composite_x_offset = 0;
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gint composite_y_offset = 0;
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GdkImage *retval;
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g_return_val_if_fail (GDK_IS_DRAWABLE (drawable), NULL);
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g_return_val_if_fail (x >= 0, NULL);
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g_return_val_if_fail (y >= 0, NULL);
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if (width < 0 || height < 0)
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gdk_drawable_get_size (drawable,
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width < 0 ? &width : NULL,
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height < 0 ? &height : NULL);
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composite =
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GDK_DRAWABLE_GET_CLASS (drawable)->get_composite_drawable (drawable,
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x, y,
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width, height,
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&composite_x_offset,
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&composite_y_offset);
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retval = GDK_DRAWABLE_GET_CLASS (composite)->get_image (composite,
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x - composite_x_offset,
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y - composite_y_offset,
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width, height);
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|
g_object_unref (G_OBJECT (composite));
|
|
|
|
return retval;
|
|
}
|
|
|
|
static GdkDrawable*
|
|
gdk_drawable_real_get_composite_drawable (GdkDrawable *drawable,
|
|
gint x,
|
|
gint y,
|
|
gint width,
|
|
gint height,
|
|
gint *composite_x_offset,
|
|
gint *composite_y_offset)
|
|
{
|
|
g_return_val_if_fail (GDK_IS_DRAWABLE (drawable), NULL);
|
|
|
|
*composite_x_offset = 0;
|
|
*composite_y_offset = 0;
|
|
|
|
return GDK_DRAWABLE (g_object_ref (G_OBJECT (drawable)));
|
|
}
|
|
|
|
/**
|
|
* gdk_drawable_get_clip_region:
|
|
* @drawable: a #GdkDrawable
|
|
*
|
|
* Computes the region of a drawable that potentially can be written
|
|
* to by drawing primitives. This region will not take into account
|
|
* the clip region for the GC, and may also not take into account
|
|
* other factors such as if the window is obscured by other windows,
|
|
* but no area outside of this region will be affected by drawing
|
|
* primitives.
|
|
*
|
|
* Return value: a #GdkRegion. This must be freed with gdk_region_destroy()
|
|
* when you are done.
|
|
**/
|
|
GdkRegion *
|
|
gdk_drawable_get_clip_region (GdkDrawable *drawable)
|
|
{
|
|
g_return_val_if_fail (GDK_IS_DRAWABLE (drawable), NULL);
|
|
|
|
return GDK_DRAWABLE_GET_CLASS (drawable)->get_clip_region (drawable);
|
|
}
|
|
|
|
/**
|
|
* gdk_drawable_get_visible_region:
|
|
* @drawable:
|
|
*
|
|
* Computes the region of a drawable that is potentially visible.
|
|
* This does not necessarily take into account if the window is
|
|
* obscured by other windows, but no area outside of this region
|
|
* is visible.
|
|
*
|
|
* Return value: a #GdkRegion. This must be freed with gdk_region_destroy()
|
|
* when you are done.
|
|
**/
|
|
GdkRegion *
|
|
gdk_drawable_get_visible_region (GdkDrawable *drawable)
|
|
{
|
|
g_return_val_if_fail (GDK_IS_DRAWABLE (drawable), NULL);
|
|
|
|
return GDK_DRAWABLE_GET_CLASS (drawable)->get_visible_region (drawable);
|
|
}
|
|
|
|
static GdkRegion *
|
|
gdk_drawable_real_get_visible_region (GdkDrawable *drawable)
|
|
{
|
|
GdkRectangle rect;
|
|
|
|
rect.x = 0;
|
|
rect.y = 0;
|
|
|
|
gdk_drawable_get_size (drawable, &rect.width, &rect.height);
|
|
|
|
return gdk_region_rectangle (&rect);
|
|
}
|