linux学习记录
分类:
2009-06-04 11:26:47
Gtk显示不规则按钮
分两步:1,建立gtk_event_box, 将按钮图片加入到这个容器中;
2,获取按钮图片的掩码mask,和event_box相关联。
这样,按钮以外的部分就不会再显示出来。
#include
int main(int argc, char *argv[])
{
GtkWidget *window = NULL;
GtkWidget *fixed = NULL;
GdkPixbuf *pixbuf = NULL;
GdkPixmap *pixmap = NULL;
GtkWidget *eventbox;
GtkWidget *image;
GdkBitmap *bitmap;
gtk_init(&argc,&argv);
/* Create the window */
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(window),"User Define Button Demo");
gtk_widget_set_app_paintable(window,TRUE);
gtk_widget_realize (window);
gtk_widget_set_size_request(window, 400, 300);
g_signal_connect (G_OBJECT (window), "delete_event", G_CALLBACK (gtk_main_quit), NULL);
fixed = gtk_fixed_new();
gtk_container_add (GTK_CONTAINER(window), fixed);
eventbox = gtk_event_box_new();
//load background
pixbuf = gdk_pixbuf_new_from_file ("/bg.jpg",NULL);
image = gtk_image_new_from_pixbuf (pixbuf);
pixmap = gdk_pixmap_new (window->window, gdk_pixbuf_get_width(pixbuf), gdk_pixbuf_get_height(pixbuf), -1);
gdk_pixbuf_render_to_drawable(pixbuf, pixmap,
window->style->fg_gc[GTK_STATE_NORMAL],
0,0,0,0,
gdk_pixbuf_get_width(pixbuf),
gdk_pixbuf_get_height(pixbuf),
GDK_RGB_DITHER_NORMAL,0,0);
g_object_unref(pixbuf);
gdk_window_set_back_pixmap (window->window, pixmap, FALSE);
// Load button
pixbuf = gdk_pixbuf_new_from_file ("/button_auto.png",NULL);
image = gtk_image_new_from_pixbuf (pixbuf);
gtk_container_add(GTK_CONTAINER(eventbox), image);
gtk_fixed_put (GTK_FIXED (fixed), eventbox, 50,50);
// Set button mask
gdk_pixbuf_render_pixmap_and_mask(pixbuf, NULL, &bitmap, 255);
gtk_widget_shape_combine_mask(eventbox, bitmap, 0, 0);
gtk_widget_show_all(window);
gtk_main();
return 0;
}
//////////////http://blog.sina.com.cn/s/blog_4fa676f60100cgwm.html
#include
gint mouse_event_handle(GtkWidget *widget, GdkEventButton *event, gpointer data)
{
GdkPixbuf *pixbuf;
GdkPixmap *pixmap;
GdkBitmap *bitmap;
GtkWidget *oldImage;
GtkWidget *newImage;
switch(event->button) {
case 1:
printf("Left ");
break;
case 2:
printf("Middle ");
break;
case 3:
printf("Right ");
break;
default:
printf("Unknown ");
}
switch(event->type){
case GDK_BUTTON_PRESS:
printf("Mouse button press at (%.2f, %.2f)\n", event->x, event->y);
oldImage = GTK_WIDGET(gtk_container_children(GTK_CONTAINER(widget))->data);
gtk_object_ref(GTK_OBJECT(oldImage));
gtk_container_remove(GTK_CONTAINER(widget), oldImage);
pixbuf = gdk_pixbuf_new_from_file ("press.png", NULL);
newImage = gtk_image_new_from_pixbuf (pixbuf);
gdk_pixbuf_render_pixmap_and_mask(pixbuf, &pixmap, &bitmap, 128);
gtk_widget_shape_combine_mask(widget, bitmap, 0, 0);
gtk_container_add(GTK_CONTAINER(widget), newImage);
gtk_widget_show(newImage);
break;
case GDK_BUTTON_RELEASE:
printf("Mouse button release at (%.2f, %.2f)\n", event->x, event->y);
oldImage = GTK_WIDGET(gtk_container_children(GTK_CONTAINER(widget))->data);
gtk_object_ref(GTK_OBJECT(oldImage));
gtk_container_remove(GTK_CONTAINER(widget), oldImage);
pixbuf = gdk_pixbuf_new_from_file ("enter.png", NULL);
newImage = gtk_image_new_from_pixbuf (pixbuf);
gdk_pixbuf_render_pixmap_and_mask(pixbuf, &pixmap, &bitmap, 128);
gtk_widget_shape_combine_mask(widget, bitmap, 0, 0);
gtk_container_add(GTK_CONTAINER(widget), newImage);
gtk_widget_show(newImage);
break;
case GDK_ENTER_NOTIFY:
printf("Mouse enter.\n");
oldImage = GTK_WIDGET(gtk_container_children(GTK_CONTAINER(widget))->data);
gtk_object_ref(GTK_OBJECT(oldImage));
gtk_container_remove(GTK_CONTAINER(widget), oldImage);
pixbuf = gdk_pixbuf_new_from_file ("enter.png", NULL);
newImage = gtk_image_new_from_pixbuf (pixbuf);
gdk_pixbuf_render_pixmap_and_mask(pixbuf, &pixmap, &bitmap, 128);
gtk_widget_shape_combine_mask(widget, bitmap, 0, 0);
gtk_container_add(GTK_CONTAINER(widget), newImage);
gtk_widget_show(newImage);
break;
case GDK_LEAVE_NOTIFY:
printf("Mouse leave.\n");
oldImage = GTK_WIDGET(gtk_container_children(GTK_CONTAINER(widget))->data);
gtk_object_ref(GTK_OBJECT(oldImage));
gtk_container_remove(GTK_CONTAINER(widget), oldImage);
pixbuf = gdk_pixbuf_new_from_file ("leave.png", NULL);
newImage = gtk_image_new_from_pixbuf (pixbuf);
gdk_pixbuf_render_pixmap_and_mask(pixbuf, &pixmap, &bitmap, 128);
gtk_widget_shape_combine_mask(widget, bitmap, 0, 0);
gtk_container_add(GTK_CONTAINER(widget), newImage);
gtk_widget_show(newImage);
break;
default:
printf("\n");
break;
}
return FALSE;
}
int main(int argc, char *argv[])
{
GtkWidget *window = NULL;
GdkPixbuf *pixbuf = NULL;
GdkPixmap *pixmap = NULL;
GdkBitmap *bitmap = NULL;
GtkWidget *image = NULL;
GtkWidget *eventbox = NULL;
GtkWidget *fixed = NULL;
gtk_init(&argc,&argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(window),"ZQButton Demo");
gtk_widget_set_events(window, GDK_SCROLL_MASK);
gtk_widget_set_app_paintable(window,TRUE);
gtk_widget_realize (window);
//gtk_window_fullscreen(GTK_WINDOW(window));
gtk_widget_set_size_request(window, 800, 600);
g_signal_connect (G_OBJECT (window), "delete_event", G_CALLBACK (gtk_main_quit), NULL);
fixed = gtk_fixed_new();
gtk_container_add (GTK_CONTAINER(window), fixed);
pixmap = gdk_pixmap_new (fixed->window, 800, 600, -1);
// gdk_window_set_back_pixmap (fixed->window, pixmap, FALSE);
gtk_widget_show(fixed);
eventbox=gtk_event_box_new();
gtk_widget_set_events(eventbox, GDK_MOTION_NOTIFY | GDK_BUTTON_PRESS | GDK_BUTTON_RELEASE
| GDK_ENTER_NOTIFY | GDK_LEAVE_NOTIFY);
g_signal_connect(G_OBJECT(eventbox), "button_press_event", GTK_SIGNAL_FUNC(mouse_event_handle), NULL);
g_signal_connect(G_OBJECT(eventbox), "button_release_event", GTK_SIGNAL_FUNC(mouse_event_handle), NULL);
g_signal_connect(G_OBJECT(eventbox), "enter_notify_event", GTK_SIGNAL_FUNC(mouse_event_handle), NULL);
g_signal_connect(G_OBJECT(eventbox), "leave_notify_event", GTK_SIGNAL_FUNC(mouse_event_handle), NULL);
gtk_fixed_put (GTK_FIXED (fixed), eventbox, 10, 10);
pixbuf = gdk_pixbuf_new_from_file ("leave.png", NULL);
image = gtk_image_new_from_pixbuf (pixbuf);
gdk_pixbuf_render_pixmap_and_mask(pixbuf, &pixmap, &bitmap, 128);
gtk_widget_shape_combine_mask(eventbox, bitmap, 0, 0);
gtk_widget_shape_combine_mask(window, bitmap, 10, 10);
gtk_container_add(GTK_CONTAINER(eventbox), image);
gtk_widget_show(image);
gtk_widget_show(eventbox);
gtk_widget_show(window);
gtk_main();
return FALSE;
}
在开源项目openmoko的源代 *** 中有这么一种方法可以实现不规则窗体,但只能是没有修饰的窗体,实现方法大概是:
1。创建一个目标窗体大小的png图片,这个图片包含alpha通道,你想保留的地方填充上数据,不想要的地方的象素设置为透明;
2。创建窗口,以png图片作为窗口背景;
GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file (filename);
GtkWidget *self = gtk_window_new (GTK_WINDOW_POPUP);
GdkPixmap *pixmap;
GdkBitmap *bitmap;
gdk_pixbuf_render_pixmap_and_mask (pixbuf, &pixmap, &bitmap, 128 );
gtk_widget_shape_combine_mask (self, bitmap, 0, 0);
GtkStyle *style = gtk_style_copy (self->style);
if (style->bg_pixmap[GTK_STATE_NORMAL])
g_object_unref (style->bg_pixmap[GTK_STATE_NORMAL]);
style->bg_pixmap[GTK_STATE_NORMAL] = g_object_ref (pixmap);
gtk_widget_set_style (self, style);
gtk_widget_show (self);
以上代 *** 仅供参考。