diff options
Diffstat (limited to 'gtk/gtkimage.c')
| -rw-r--r-- | gtk/gtkimage.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/gtk/gtkimage.c b/gtk/gtkimage.c new file mode 100644 index 000000000..fddd06a5d --- /dev/null +++ b/gtk/gtkimage.c @@ -0,0 +1,181 @@ +/* GTK - The GIMP Toolkit + * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free + * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#include "gtkcontainer.h" +#include "gtkimage.h" + + +static void gtk_image_class_init (GtkImageClass *klass); +static void gtk_image_init (GtkImage *image); +static gint gtk_image_expose (GtkWidget *widget, + GdkEventExpose *event); + + +guint +gtk_image_get_type () +{ + static guint image_type = 0; + + if (!image_type) + { + GtkTypeInfo image_info = + { + "GtkImage", + sizeof (GtkImage), + sizeof (GtkImageClass), + (GtkClassInitFunc) gtk_image_class_init, + (GtkObjectInitFunc) gtk_image_init, + (GtkArgFunc) NULL, + }; + + image_type = gtk_type_unique (gtk_misc_get_type (), &image_info); + } + + return image_type; +} + +static void +gtk_image_class_init (GtkImageClass *class) +{ + GtkWidgetClass *widget_class; + + widget_class = (GtkWidgetClass*) class; + + widget_class->expose_event = gtk_image_expose; +} + +static void +gtk_image_init (GtkImage *image) +{ + GTK_WIDGET_SET_FLAGS (image, GTK_NO_WINDOW); + + image->image = NULL; + image->mask = NULL; +} + +GtkWidget* +gtk_image_new (GdkImage *val, + GdkBitmap *mask) +{ + GtkImage *image; + + g_return_val_if_fail (val != NULL, NULL); + + image = gtk_type_new (gtk_image_get_type ()); + + gtk_image_set (image, val, mask); + + return GTK_WIDGET (image); +} + +void +gtk_image_set (GtkImage *image, + GdkImage *val, + GdkBitmap *mask) +{ + g_return_if_fail (image != NULL); + g_return_if_fail (GTK_IS_IMAGE (image)); + + image->image = val; + image->mask = mask; + + if (image->image) + { + GTK_WIDGET (image)->requisition.width = image->image->width + GTK_MISC (image)->xpad * 2; + GTK_WIDGET (image)->requisition.height = image->image->height + GTK_MISC (image)->ypad * 2; + } + else + { + GTK_WIDGET (image)->requisition.width = 0; + GTK_WIDGET (image)->requisition.height = 0; + } + + if (GTK_WIDGET_VISIBLE (image)) + gtk_widget_queue_resize (GTK_WIDGET (image)); +} + +void +gtk_image_get (GtkImage *image, + GdkImage **val, + GdkBitmap **mask) +{ + g_return_if_fail (image != NULL); + g_return_if_fail (GTK_IS_IMAGE (image)); + + if (val) + *val = image->image; + if (mask) + *mask = image->mask; +} + + +static gint +gtk_image_expose (GtkWidget *widget, + GdkEventExpose *event) +{ + GtkImage *image; + GtkMisc *misc; + GdkRectangle area; + gint x, y; + + g_return_val_if_fail (widget != NULL, FALSE); + g_return_val_if_fail (GTK_IS_IMAGE (widget), FALSE); + g_return_val_if_fail (event != NULL, FALSE); + + if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget)) + { + image = GTK_IMAGE (widget); + misc = GTK_MISC (widget); + + x = (widget->allocation.x * (1.0 - misc->xalign) + + (widget->allocation.x + widget->allocation.width + - (widget->requisition.width - misc->xpad * 2)) * + misc->xalign) + 0.5; + y = (widget->allocation.y * (1.0 - misc->yalign) + + (widget->allocation.y + widget->allocation.height + - (widget->requisition.height - misc->ypad * 2)) * + misc->yalign) + 0.5; + + if (image->mask) + { + gdk_gc_set_clip_mask (widget->style->black_gc, image->mask); + gdk_gc_set_clip_origin (widget->style->black_gc, x, y); + } + + area = event->area; + if ((area.x < 0) || (area.y < 0)) + { + area.x = area.y = 0; + area.width = image->image->width; + area.height = image->image->height; + } + + gdk_draw_image (widget->window, + widget->style->black_gc, + image->image, + area.x, area.y, x+area.x, y+area.y, + area.width, area.height); + + if (image->mask) + { + gdk_gc_set_clip_mask (widget->style->black_gc, NULL); + gdk_gc_set_clip_origin (widget->style->black_gc, 0, 0); + } + } + + return FALSE; +} |