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gtk-demo: Add more foreign drawing examples

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Add a notebook with an active tab.
Based on a patch by Caolan McNamara.
This commit is contained in:
Matthias Clasen 2016-02-10 21:20:34 -05:00
parent 671552043c
commit bfd254c932
1 changed files with 27 additions and 22 deletions
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49
demos/gtk-demo/foreigndrawing.c
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@ -126,6 +126,10 @@ get_style (GtkStyleContext *parent,
context = gtk_style_context_new ();
gtk_style_context_set_path (context, path);
gtk_style_context_set_parent (context, parent);
/* Unfortunately, we have to explicitly set the state again here
* for it to take effect
*/
gtk_style_context_set_state (context, gtk_widget_path_iter_get_state (path, -1));
gtk_widget_path_unref (path);
return context;
@ -149,22 +153,19 @@ draw_menu (GtkWidget *widget,
gtk_render_background (menu_context, cr, x, y, width, height);
gtk_render_frame (menu_context, cr, x, y, width, height);
menuitem_context = get_style (menu_context, "menuitem");
gtk_style_context_set_state (menuitem_context, GTK_STATE_FLAG_PRELIGHT);
menuitem_context = get_style (menu_context, "menuitem:hover");
gtk_render_background (menuitem_context, cr, x, y, width, 20);
gtk_render_frame (menuitem_context, cr, x, y, width, 20);
/* arrow for left to right */
arrowmenuitem_context = get_style (menuitem_context, "arrow");
gtk_style_context_set_state (arrowmenuitem_context, GTK_STATE_FLAG_DIR_LTR);
arrowmenuitem_context = get_style (menuitem_context, "arrow:dir(ltr)");
gtk_render_arrow (arrowmenuitem_context, cr, G_PI / 2, x + width - 20, y, 20);
gtk_render_background (menuitem_context, cr, x, y + 20, width, 20);
gtk_render_frame (menuitem_context, cr, x, y + 20, width, 20);
g_object_unref (arrowmenuitem_context);
/* arrow for right to left */
gtk_style_context_get_state (arrowmenuitem_context);
gtk_style_context_set_state (arrowmenuitem_context, GTK_STATE_FLAG_DIR_RTL);
arrowmenuitem_context = get_style (menuitem_context, "arrow:dir(rtl)");
gtk_render_arrow (arrowmenuitem_context, cr, G_PI / 2, x, y + 20, 20);
g_object_unref (arrowmenuitem_context);
@ -181,38 +182,42 @@ draw_notebook (GtkWidget *widget,
gint height)
{
GtkStyleContext *notebook_context;
GtkStyleContext *stack_context;
GtkStyleContext *header_context;
GtkStyleContext *tabs_context;
GtkStyleContext *tab_context;
GtkStyleContext *stack_context;
gint header_height = 40;
/* This information is taken from the GtkNotebook docs, see "CSS nodes" */
notebook_context = get_style (NULL, "notebook.frame");
gtk_render_background (notebook_context, cr, x, y, width, height);
gtk_render_frame (notebook_context, cr, x, y, width, height);
stack_context = get_style (notebook_context, "stack");
gtk_render_background (stack_context, cr, x, y + 30, width, height - 30);
gtk_render_frame (stack_context, cr, x, y + 30, width, height - 30);
header_context = get_style (notebook_context, "header.frame");
gtk_render_background (header_context, cr, x, y, width, 30);
gtk_render_frame (header_context, cr, x, y, width, 30);
header_context = get_style (notebook_context, "header.top");
gtk_render_background (header_context, cr, x, y, width, header_height);
gtk_render_frame (header_context, cr, x, y, width, header_height);
tabs_context = get_style (header_context, "tabs");
gtk_render_background (tabs_context, cr, x, y, width, 30);
gtk_render_frame (tabs_context, cr, x, y, width, 30);
gtk_render_background (tabs_context, cr, x, y, width, header_height);
gtk_render_frame (tabs_context, cr, x, y, width, header_height);
/* what do I need to do to get the box-shadow rendered ? */
tab_context = get_style (tabs_context, "tab:active");
gtk_render_background (tab_context, cr, x, y, 50, 30);
gtk_render_frame (tab_context, cr, x, y, 50, 30);
gtk_render_background (tab_context, cr, x, y, width/2, header_height);
gtk_render_frame (tab_context, cr, x, y, width/2, header_height);
g_object_unref (tab_context);
tab_context = get_style (tabs_context, "tab");
gtk_render_background (tab_context, cr, x + width/2, y, width/2, header_height);
gtk_render_frame (tab_context, cr, x + width/2, y, width/2, header_height);
stack_context = get_style (notebook_context, "stack");
gtk_render_background (stack_context, cr, x, y + header_height, width, height - header_height);
gtk_render_frame (stack_context, cr, x, y + header_height, width, height - header_height);
g_object_unref (stack_context);
g_object_unref (tab_context);
g_object_unref (tabs_context);
g_object_unref (header_context);
g_object_unref (stack_context);
g_object_unref (notebook_context);
}