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-rw-r--r--libs/pixman-0.40.0/demos/dither.c279
1 files changed, 0 insertions, 279 deletions
diff --git a/libs/pixman-0.40.0/demos/dither.c b/libs/pixman-0.40.0/demos/dither.c
deleted file mode 100644
index d72c250..0000000
--- a/libs/pixman-0.40.0/demos/dither.c
+++ /dev/null
@@ -1,279 +0,0 @@
-/*
- * Copyright 2012, Red Hat, Inc.
- * Copyright 2012, Soren Sandmann
- * Copyright 2018, Basile Clement
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-#include <math.h>
-#include <gtk/gtk.h>
-#include <stdlib.h>
-#include "../test/utils.h"
-#include "gtk-utils.h"
-
-#define WIDTH 1024
-#define HEIGHT 640
-
-typedef struct
-{
- GtkBuilder * builder;
- pixman_image_t * original;
- pixman_format_code_t format;
- pixman_dither_t dither;
- int width;
- int height;
-} app_t;
-
-static GtkWidget *
-get_widget (app_t *app, const char *name)
-{
- GtkWidget *widget = GTK_WIDGET (gtk_builder_get_object (app->builder, name));
-
- if (!widget)
- g_error ("Widget %s not found\n", name);
-
- return widget;
-}
-
-typedef struct
-{
- char name [20];
- int value;
-} named_int_t;
-
-static const named_int_t formats[] =
-{
- { "a8r8g8b8", PIXMAN_a8r8g8b8 },
- { "rgb", PIXMAN_rgb_float },
- { "sRGB", PIXMAN_a8r8g8b8_sRGB },
- { "r5g6b5", PIXMAN_r5g6b5 },
- { "a4r4g4b4", PIXMAN_a4r4g4b4 },
- { "a2r2g2b2", PIXMAN_a2r2g2b2 },
- { "r3g3b2", PIXMAN_r3g3b2 },
- { "r1g2b1", PIXMAN_r1g2b1 },
- { "a1r1g1b1", PIXMAN_a1r1g1b1 },
-};
-
-static const named_int_t dithers[] =
-{
- { "None", PIXMAN_REPEAT_NONE },
- { "Bayer 8x8", PIXMAN_DITHER_ORDERED_BAYER_8 },
- { "Blue noise 64x64", PIXMAN_DITHER_ORDERED_BLUE_NOISE_64 },
-};
-
-static int
-get_value (app_t *app, const named_int_t table[], const char *box_name)
-{
- GtkComboBox *box = GTK_COMBO_BOX (get_widget (app, box_name));
-
- return table[gtk_combo_box_get_active (box)].value;
-}
-
-static void
-rescale (GtkWidget *may_be_null, app_t *app)
-{
- app->dither = get_value (app, dithers, "dithering_combo_box");
- app->format = get_value (app, formats, "target_format_combo_box");
-
- gtk_widget_set_size_request (
- get_widget (app, "drawing_area"), app->width + 0.5, app->height + 0.5);
-
- gtk_widget_queue_draw (
- get_widget (app, "drawing_area"));
-}
-
-static gboolean
-on_expose (GtkWidget *da, GdkEvent *event, gpointer data)
-{
- app_t *app = data;
- GdkRectangle *area = &event->expose.area;
- cairo_surface_t *surface;
- pixman_image_t *tmp, *final;
- cairo_t *cr;
- uint32_t *pixels;
-
- tmp = pixman_image_create_bits (
- app->format, area->width, area->height, NULL, 0);
- pixman_image_set_dither (tmp, app->dither);
-
- pixman_image_composite (
- PIXMAN_OP_SRC,
- app->original, NULL, tmp,
- area->x, area->y, 0, 0, 0, 0,
- app->width - area->x,
- app->height - area->y);
-
- pixels = calloc (1, area->width * area->height * 4);
- final = pixman_image_create_bits (
- PIXMAN_a8r8g8b8, area->width, area->height, pixels, area->width * 4);
-
- pixman_image_composite (
- PIXMAN_OP_SRC,
- tmp, NULL, final,
- area->x, area->y, 0, 0, 0, 0,
- app->width - area->x,
- app->height - area->y);
-
- surface = cairo_image_surface_create_for_data (
- (uint8_t *)pixels, CAIRO_FORMAT_ARGB32,
- area->width, area->height, area->width * 4);
-
- cr = gdk_cairo_create (da->window);
-
- cairo_set_source_surface (cr, surface, area->x, area->y);
-
- cairo_paint (cr);
-
- cairo_destroy (cr);
- cairo_surface_destroy (surface);
- free (pixels);
- pixman_image_unref (final);
- pixman_image_unref (tmp);
-
- return TRUE;
-}
-
-static void
-set_up_combo_box (app_t *app, const char *box_name,
- int n_entries, const named_int_t table[])
-{
- GtkWidget *widget = get_widget (app, box_name);
- GtkListStore *model;
- GtkCellRenderer *cell;
- int i;
-
- model = gtk_list_store_new (1, G_TYPE_STRING);
-
- cell = gtk_cell_renderer_text_new ();
- gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (widget), cell, TRUE);
- gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (widget), cell,
- "text", 0,
- NULL);
-
- gtk_combo_box_set_model (GTK_COMBO_BOX (widget), GTK_TREE_MODEL (model));
-
- for (i = 0; i < n_entries; ++i)
- {
- const named_int_t *info = &(table[i]);
- GtkTreeIter iter;
-
- gtk_list_store_append (model, &iter);
- gtk_list_store_set (model, &iter, 0, info->name, -1);
- }
-
- gtk_combo_box_set_active (GTK_COMBO_BOX (widget), 0);
-
- g_signal_connect (widget, "changed", G_CALLBACK (rescale), app);
-}
-
-static app_t *
-app_new (pixman_image_t *original)
-{
- GtkWidget *widget;
- app_t *app = g_malloc (sizeof *app);
- GError *err = NULL;
-
- app->builder = gtk_builder_new ();
- app->original = original;
-
- if (original->type == BITS)
- {
- app->width = pixman_image_get_width (original);
- app->height = pixman_image_get_height (original);
- }
- else
- {
- app->width = WIDTH;
- app->height = HEIGHT;
- }
-
- if (!gtk_builder_add_from_file (app->builder, "dither.ui", &err))
- g_error ("Could not read file dither.ui: %s", err->message);
-
- widget = get_widget (app, "drawing_area");
- g_signal_connect (widget, "expose_event", G_CALLBACK (on_expose), app);
-
- set_up_combo_box (app, "target_format_combo_box",
- G_N_ELEMENTS (formats), formats);
- set_up_combo_box (app, "dithering_combo_box",
- G_N_ELEMENTS (dithers), dithers);
-
- app->dither = get_value (app, dithers, "dithering_combo_box");
- app->format = get_value (app, formats, "target_format_combo_box");
-
- rescale (NULL, app);
-
- return app;
-}
-
-int
-main (int argc, char **argv)
-{
- GtkWidget *window;
- pixman_image_t *image;
- app_t *app;
-
- gtk_init (&argc, &argv);
-
- if (argc < 2)
- {
- pixman_gradient_stop_t stops[] = {
- /* These colors make it very obvious that dithering
- * is useful even for 8-bit gradients
- */
- { 0x00000, { 0x1b1b, 0x5d5d, 0x7c7c, 0xffff } },
- { 0x10000, { 0x3838, 0x3232, 0x1010, 0xffff } },
- };
- pixman_point_fixed_t p1, p2;
-
- p1.x = p1.y = 0x0000;
- p2.x = WIDTH << 16;
- p2.y = HEIGHT << 16;
-
- if (!(image = pixman_image_create_linear_gradient (
- &p1, &p2, stops, ARRAY_LENGTH (stops))))
- {
- printf ("Could not create gradient\n");
- return -1;
- }
- }
- else if (!(image = pixman_image_from_file (argv[1], PIXMAN_a8r8g8b8)))
- {
- printf ("Could not load image \"%s\"\n", argv[1]);
- return -1;
- }
-
- app = app_new (image);
-
- window = get_widget (app, "main");
-
- g_signal_connect (window, "delete_event", G_CALLBACK (gtk_main_quit), NULL);
-
- gtk_window_set_default_size (GTK_WINDOW (window), 1024, 768);
-
- gtk_widget_show_all (window);
-
- gtk_main ();
-
- return 0;
-}
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