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Diffstat (limited to 'src/testgradient.c')
| -rw-r--r-- | src/testgradient.c | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/src/testgradient.c b/src/testgradient.c new file mode 100644 index 0000000..aac882a --- /dev/null +++ b/src/testgradient.c @@ -0,0 +1,246 @@ +/* Metacity gradient test program */ + +/* + * Copyright (C) 2002 Havoc Pennington + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This program 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 + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA + * 02111-1307, USA. */ + +#include "gradient.h" +#include <gtk/gtk.h> + +typedef void (* RenderGradientFunc) (GdkDrawable *drawable, + GdkGC *gc, + int width, + int height); + +static void +render_simple (GdkDrawable *drawable, + GdkGC *gc, + int width, int height, + MetaGradientType type) +{ + GdkPixbuf *pixbuf; + GdkColor from, to; + + gdk_color_parse ("blue", &from); + gdk_color_parse ("green", &to); + + pixbuf = meta_gradient_create_simple (width, height, + &from, &to, + type); + + gdk_pixbuf_render_to_drawable (pixbuf, + drawable, + gc, + 0, 0, + 0, 0, width, height, + GDK_RGB_DITHER_NORMAL, + 0, 0); + + g_object_unref (G_OBJECT (pixbuf)); +} + +static void +render_vertical_func (GdkDrawable *drawable, + GdkGC *gc, + int width, int height) +{ + render_simple (drawable, gc, width, height, META_GRADIENT_VERTICAL); +} + +static void +render_horizontal_func (GdkDrawable *drawable, + GdkGC *gc, + int width, int height) +{ + render_simple (drawable, gc, width, height, META_GRADIENT_HORIZONTAL); +} + +static void +render_diagonal_func (GdkDrawable *drawable, + GdkGC *gc, + int width, int height) +{ + render_simple (drawable, gc, width, height, META_GRADIENT_DIAGONAL); +} + +static void +render_multi (GdkDrawable *drawable, + GdkGC *gc, + int width, int height, + MetaGradientType type) +{ + GdkPixbuf *pixbuf; +#define N_COLORS 5 + GdkColor colors[N_COLORS]; + + gdk_color_parse ("red", &colors[0]); + gdk_color_parse ("blue", &colors[1]); + gdk_color_parse ("orange", &colors[2]); + gdk_color_parse ("pink", &colors[3]); + gdk_color_parse ("green", &colors[4]); + + pixbuf = meta_gradient_create_multi (width, height, + colors, N_COLORS, + type); + + gdk_pixbuf_render_to_drawable (pixbuf, + drawable, + gc, + 0, 0, + 0, 0, width, height, + GDK_RGB_DITHER_NORMAL, + 0, 0); + + g_object_unref (G_OBJECT (pixbuf)); +} + +static void +render_vertical_multi_func (GdkDrawable *drawable, + GdkGC *gc, + int width, int height) +{ + render_multi (drawable, gc, width, height, META_GRADIENT_VERTICAL); +} + +static void +render_horizontal_multi_func (GdkDrawable *drawable, + GdkGC *gc, + int width, int height) +{ + render_multi (drawable, gc, width, height, META_GRADIENT_HORIZONTAL); +} + +static void +render_diagonal_multi_func (GdkDrawable *drawable, + GdkGC *gc, + int width, int height) +{ + render_multi (drawable, gc, width, height, META_GRADIENT_DIAGONAL); +} + +static void +render_interwoven_func (GdkDrawable *drawable, + GdkGC *gc, + int width, int height) +{ + GdkPixbuf *pixbuf; +#define N_COLORS 4 + GdkColor colors[N_COLORS]; + + gdk_color_parse ("red", &colors[0]); + gdk_color_parse ("blue", &colors[1]); + gdk_color_parse ("pink", &colors[2]); + gdk_color_parse ("green", &colors[3]); + + pixbuf = meta_gradient_create_interwoven (width, height, + colors, height / 10, + colors + 2, height / 14); + + gdk_pixbuf_render_to_drawable (pixbuf, + drawable, + gc, + 0, 0, + 0, 0, width, height, + GDK_RGB_DITHER_NORMAL, + 0, 0); + + g_object_unref (G_OBJECT (pixbuf)); +} + +static gboolean +expose_callback (GtkWidget *widget, + GdkEventExpose *event, + gpointer data) +{ + RenderGradientFunc func = data; + + (* func) (widget->window, + widget->style->fg_gc[widget->state], + widget->allocation.width, + widget->allocation.height); + + return TRUE; +} + +static GtkWidget* +create_gradient_window (const char *title, + RenderGradientFunc func) +{ + GtkWidget *window; + GtkWidget *drawing_area; + + window = gtk_window_new (GTK_WINDOW_TOPLEVEL); + + gtk_window_set_title (GTK_WINDOW (window), title); + + drawing_area = gtk_drawing_area_new (); + + gtk_widget_set_size_request (drawing_area, 1, 1); + + gtk_window_set_default_size (GTK_WINDOW (window), 175, 175); + + g_signal_connect (G_OBJECT (drawing_area), + "expose_event", + G_CALLBACK (expose_callback), + func); + + gtk_container_add (GTK_CONTAINER (window), drawing_area); + + gtk_widget_show_all (window); + + return window; +} + +static void +meta_gradient_test (void) +{ + GtkWidget *window; + + window = create_gradient_window ("Simple vertical", + render_vertical_func); + + window = create_gradient_window ("Simple horizontal", + render_horizontal_func); + + window = create_gradient_window ("Simple diagonal", + render_diagonal_func); + + window = create_gradient_window ("Multi vertical", + render_vertical_multi_func); + + window = create_gradient_window ("Multi horizontal", + render_horizontal_multi_func); + + window = create_gradient_window ("Multi diagonal", + render_diagonal_multi_func); + + window = create_gradient_window ("Interwoven", + render_interwoven_func); +} + +int +main (int argc, char **argv) +{ + gtk_init (&argc, &argv); + + meta_gradient_test (); + + gtk_main (); + + return 0; +} + |