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Add more examples to foreigndrawing

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Show how to draw checks and radios.
This commit is contained in:
Matthias Clasen 2015-12-05 17:09:10 -05:00
parent 2c03ab48eb
commit 6915aba952
1 changed files with 73 additions and 2 deletions
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75
tests/foreigndrawing.c
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@ -133,13 +133,78 @@ draw_text (GtkWidget *widget,
g_object_unref (label_context);
}
static void
draw_check (GtkWidget *widget,
cairo_t *cr,
gint x,
gint y,
GtkStateFlags state)
{
GtkStyleContext *button_context;
GtkStyleContext *check_context;
/* This information is taken from the GtkCheckButton docs, see "CSS nodes" */
PathElt path[2] = {
{ GTK_TYPE_LABEL, "checkbutton", NULL, NULL },
{ G_TYPE_NONE, "check", NULL, NULL }
};
button_context = get_style (&path[0], NULL);
check_context = get_style (&path[1], button_context);
gtk_style_context_set_state (check_context, state);
gtk_render_background (check_context, cr, x, y, 20, 20);
gtk_render_frame (check_context, cr, x, y, 20, 20);
gtk_render_check (check_context, cr, x, y, 20, 20);
g_object_unref (check_context);
g_object_unref (button_context);
}
static void
draw_radio (GtkWidget *widget,
cairo_t *cr,
gint x,
gint y,
GtkStateFlags state)
{
GtkStyleContext *button_context;
GtkStyleContext *check_context;
/* This information is taken from the GtkRadioButton docs, see "CSS nodes" */
PathElt path[2] = {
{ GTK_TYPE_LABEL, "radiobutton", NULL, NULL },
{ G_TYPE_NONE, "radio", NULL, NULL }
};
button_context = get_style (&path[0], NULL);
check_context = get_style (&path[1], button_context);
gtk_style_context_set_state (check_context, state);
gtk_render_background (check_context, cr, x, y, 20, 20);
gtk_render_frame (check_context, cr, x, y, 20, 20);
gtk_render_option (check_context, cr, x, y, 20, 20);
g_object_unref (check_context);
g_object_unref (button_context);
}
static gboolean
draw_cb (GtkWidget *widget,
cairo_t *cr)
{
gint width;
gint width, height;
width = gtk_widget_get_allocated_width (widget);
height = gtk_widget_get_allocated_height (widget);
cairo_rectangle (cr, 0, 0, width, height);
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_fill (cr);
draw_horizontal_scrollbar (widget, cr, 10, 10, width - 20, 10, 30, GTK_STATE_FLAG_NORMAL);
draw_horizontal_scrollbar (widget, cr, 10, 30, width - 20, 10, 40, GTK_STATE_FLAG_PRELIGHT);
@ -148,6 +213,11 @@ draw_cb (GtkWidget *widget,
draw_text (widget, cr, 10, 70, width - 20, 20, "Not selected", GTK_STATE_FLAG_NORMAL);
draw_text (widget, cr, 10, 100, width - 20, 20, "Selected", GTK_STATE_FLAG_SELECTED);
draw_check (widget, cr, 10, 130, GTK_STATE_FLAG_NORMAL);
draw_check (widget, cr, 40, 130, GTK_STATE_FLAG_CHECKED);
draw_radio (widget, cr, 70, 130, GTK_STATE_FLAG_NORMAL);
draw_radio (widget, cr, 100, 130, GTK_STATE_FLAG_CHECKED);
return FALSE;
}
@ -161,11 +231,12 @@ main (int argc, char *argv[])
gtk_init (NULL, NULL);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_widget_set_app_paintable (window, TRUE);
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 10);
gtk_container_add (GTK_CONTAINER (window), box);
da = gtk_drawing_area_new ();
gtk_widget_set_size_request (da, 200, 200);
gtk_widget_set_hexpand (da, TRUE);
gtk_widget_set_vexpand (da, TRUE);
gtk_widget_set_app_paintable (da, TRUE);
gtk_container_add (GTK_CONTAINER (box), da);