forked from AuroraMiddleware/gtk
dd77b5db5a
-timj
186 lines
4.7 KiB
C
186 lines
4.7 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "gtkcontainer.h"
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#include "gtkimage.h"
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static void gtk_image_class_init (GtkImageClass *klass);
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static void gtk_image_init (GtkImage *image);
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static gint gtk_image_expose (GtkWidget *widget,
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GdkEventExpose *event);
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guint
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gtk_image_get_type ()
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{
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static guint image_type = 0;
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if (!image_type)
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{
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GtkTypeInfo image_info =
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{
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"GtkImage",
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sizeof (GtkImage),
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sizeof (GtkImageClass),
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(GtkClassInitFunc) gtk_image_class_init,
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(GtkObjectInitFunc) gtk_image_init,
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(GtkArgSetFunc) NULL,
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(GtkArgGetFunc) NULL,
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};
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image_type = gtk_type_unique (gtk_misc_get_type (), &image_info);
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}
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return image_type;
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}
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static void
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gtk_image_class_init (GtkImageClass *class)
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{
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GtkWidgetClass *widget_class;
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widget_class = (GtkWidgetClass*) class;
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widget_class->expose_event = gtk_image_expose;
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}
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static void
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gtk_image_init (GtkImage *image)
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{
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GTK_WIDGET_SET_FLAGS (image, GTK_NO_WINDOW);
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image->image = NULL;
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image->mask = NULL;
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}
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GtkWidget*
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gtk_image_new (GdkImage *val,
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GdkBitmap *mask)
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{
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GtkImage *image;
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g_return_val_if_fail (val != NULL, NULL);
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image = gtk_type_new (gtk_image_get_type ());
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gtk_image_set (image, val, mask);
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return GTK_WIDGET (image);
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}
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void
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gtk_image_set (GtkImage *image,
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GdkImage *val,
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GdkBitmap *mask)
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{
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g_return_if_fail (image != NULL);
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g_return_if_fail (GTK_IS_IMAGE (image));
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image->image = val;
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image->mask = mask;
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if (image->image)
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{
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GTK_WIDGET (image)->requisition.width = image->image->width + GTK_MISC (image)->xpad * 2;
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GTK_WIDGET (image)->requisition.height = image->image->height + GTK_MISC (image)->ypad * 2;
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}
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else
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{
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GTK_WIDGET (image)->requisition.width = 0;
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GTK_WIDGET (image)->requisition.height = 0;
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}
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if (GTK_WIDGET_VISIBLE (image))
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gtk_widget_queue_resize (GTK_WIDGET (image));
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}
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void
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gtk_image_get (GtkImage *image,
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GdkImage **val,
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GdkBitmap **mask)
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{
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g_return_if_fail (image != NULL);
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g_return_if_fail (GTK_IS_IMAGE (image));
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if (val)
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*val = image->image;
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if (mask)
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*mask = image->mask;
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}
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static gint
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gtk_image_expose (GtkWidget *widget,
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GdkEventExpose *event)
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{
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g_return_val_if_fail (widget != NULL, FALSE);
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g_return_val_if_fail (GTK_IS_IMAGE (widget), FALSE);
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g_return_val_if_fail (event != NULL, FALSE);
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if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
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{
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GtkImage *image;
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GtkMisc *misc;
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GdkRectangle area, image_bound, intersection;
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gint x, y;
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image = GTK_IMAGE (widget);
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misc = GTK_MISC (widget);
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x = (widget->allocation.x * (1.0 - misc->xalign) +
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(widget->allocation.x + widget->allocation.width
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- (widget->requisition.width - misc->xpad * 2)) *
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misc->xalign) + 0.5;
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y = (widget->allocation.y * (1.0 - misc->yalign) +
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(widget->allocation.y + widget->allocation.height
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- (widget->requisition.height - misc->ypad * 2)) *
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misc->yalign) + 0.5;
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if (image->mask)
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{
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gdk_gc_set_clip_mask (widget->style->black_gc, image->mask);
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gdk_gc_set_clip_origin (widget->style->black_gc, x, y);
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}
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image_bound.x = x;
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image_bound.y = y;
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image_bound.width = image->image->width;
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image_bound.height = image->image->height;
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area = event->area;
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if(gdk_rectangle_intersect(&image_bound, &area, &intersection))
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{
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gdk_draw_image (widget->window,
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widget->style->black_gc,
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image->image,
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image_bound.x - x, image_bound.y - y,
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image_bound.x, image_bound.y,
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image_bound.width, image_bound.height);
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}
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if (image->mask)
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{
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gdk_gc_set_clip_mask (widget->style->black_gc, NULL);
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gdk_gc_set_clip_origin (widget->style->black_gc, 0, 0);
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}
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}
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return FALSE;
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}
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