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Gtk+实现非规则按钮的不同状态图片切换

发布时间:2016-12-3 8:21:22 编辑:www.fx114.net 分享查询网我要评论
本篇文章主要介绍了"Gtk+实现非规则按钮的不同状态图片切换",主要涉及到Gtk+实现非规则按钮的不同状态图片切换方面的内容,对于Gtk+实现非规则按钮的不同状态图片切换感兴趣的同学可以参考一下。

gtk透明背景和不规则按钮 http://blog.chinaunix.net/u1/33226/showart_495584.html 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 <gtk/gtk.h> 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 <gtk/gtk.h> 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。

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