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authorMatthias Clasen <mclasen@redhat.com>2010-06-26 01:06:30 -0400
committerMatthias Clasen <mclasen@redhat.com>2010-06-26 01:09:05 -0400
commit16ecf558321030a12795cdd0b67ebbdc198d5c43 (patch)
treec3c4ff539366a54230e56861c7f0ac740ba326f5 /gdk-pixbuf/gdk-pixbuf.c
parentd722adb76abce67984f24a98433c245d86674b5c (diff)
downloadgtk+-16ecf558321030a12795cdd0b67ebbdc198d5c43.tar.gz
Make GTK+ use an external gdk-pixbuf
Diffstat (limited to 'gdk-pixbuf/gdk-pixbuf.c')
-rw-r--r--gdk-pixbuf/gdk-pixbuf.c732
1 files changed, 0 insertions, 732 deletions
diff --git a/gdk-pixbuf/gdk-pixbuf.c b/gdk-pixbuf/gdk-pixbuf.c
deleted file mode 100644
index 71e0c61e9a..0000000000
--- a/gdk-pixbuf/gdk-pixbuf.c
+++ /dev/null
@@ -1,732 +0,0 @@
-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
-/* GdkPixbuf library - Basic memory management
- *
- * Copyright (C) 1999 The Free Software Foundation
- *
- * Authors: Mark Crichton <crichton@gimp.org>
- * Miguel de Icaza <miguel@gnu.org>
- * Federico Mena-Quintero <federico@gimp.org>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#include "config.h"
-#include <math.h>
-#include <stdlib.h>
-#include <string.h>
-#define GDK_PIXBUF_C_COMPILATION
-#include "gdk-pixbuf.h"
-#include "gdk-pixbuf-private.h"
-/* Include the marshallers */
-#include <glib-object.h>
-#include "gdk-pixbuf-marshal.c"
-#include "gdk-pixbuf-alias.h"
-
-static void gdk_pixbuf_finalize (GObject *object);
-static void gdk_pixbuf_set_property (GObject *object,
- guint prop_id,
- const GValue *value,
- GParamSpec *pspec);
-static void gdk_pixbuf_get_property (GObject *object,
- guint prop_id,
- GValue *value,
- GParamSpec *pspec);
-
-
-enum
-{
- PROP_0,
- PROP_COLORSPACE,
- PROP_N_CHANNELS,
- PROP_HAS_ALPHA,
- PROP_BITS_PER_SAMPLE,
- PROP_WIDTH,
- PROP_HEIGHT,
- PROP_ROWSTRIDE,
- PROP_PIXELS
-};
-
-G_DEFINE_TYPE (GdkPixbuf, gdk_pixbuf, G_TYPE_OBJECT)
-
-static void
-gdk_pixbuf_init (GdkPixbuf *pixbuf)
-{
-}
-
-static void
-gdk_pixbuf_class_init (GdkPixbufClass *klass)
-{
- GObjectClass *object_class = G_OBJECT_CLASS (klass);
-
- object_class->finalize = gdk_pixbuf_finalize;
- object_class->set_property = gdk_pixbuf_set_property;
- object_class->get_property = gdk_pixbuf_get_property;
-
-#define PIXBUF_PARAM_FLAGS G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY|\
- G_PARAM_STATIC_NAME|G_PARAM_STATIC_NICK|G_PARAM_STATIC_BLURB
- /**
- * GdkPixbuf:n-channels:
- *
- * The number of samples per pixel.
- * Currently, only 3 or 4 samples per pixel are supported.
- */
- g_object_class_install_property (object_class,
- PROP_N_CHANNELS,
- g_param_spec_int ("n-channels",
- P_("Number of Channels"),
- P_("The number of samples per pixel"),
- 0,
- G_MAXINT,
- 3,
- PIXBUF_PARAM_FLAGS));
-
- g_object_class_install_property (object_class,
- PROP_COLORSPACE,
- g_param_spec_enum ("colorspace",
- P_("Colorspace"),
- P_("The colorspace in which the samples are interpreted"),
- GDK_TYPE_COLORSPACE,
- GDK_COLORSPACE_RGB,
- PIXBUF_PARAM_FLAGS));
-
- g_object_class_install_property (object_class,
- PROP_HAS_ALPHA,
- g_param_spec_boolean ("has-alpha",
- P_("Has Alpha"),
- P_("Whether the pixbuf has an alpha channel"),
- FALSE,
- PIXBUF_PARAM_FLAGS));
-
- /**
- * GdkPixbuf:bits-per-sample:
- *
- * The number of bits per sample.
- * Currently only 8 bit per sample are supported.
- */
- g_object_class_install_property (object_class,
- PROP_BITS_PER_SAMPLE,
- g_param_spec_int ("bits-per-sample",
- P_("Bits per Sample"),
- P_("The number of bits per sample"),
- 1,
- 16,
- 8,
- PIXBUF_PARAM_FLAGS));
-
- g_object_class_install_property (object_class,
- PROP_WIDTH,
- g_param_spec_int ("width",
- P_("Width"),
- P_("The number of columns of the pixbuf"),
- 1,
- G_MAXINT,
- 1,
- PIXBUF_PARAM_FLAGS));
-
- g_object_class_install_property (object_class,
- PROP_HEIGHT,
- g_param_spec_int ("height",
- P_("Height"),
- P_("The number of rows of the pixbuf"),
- 1,
- G_MAXINT,
- 1,
- PIXBUF_PARAM_FLAGS));
-
- /**
- * GdkPixbuf:rowstride:
- *
- * The number of bytes between the start of a row and
- * the start of the next row. This number must (obviously)
- * be at least as large as the width of the pixbuf.
- */
- g_object_class_install_property (object_class,
- PROP_ROWSTRIDE,
- g_param_spec_int ("rowstride",
- P_("Rowstride"),
- P_("The number of bytes between the start of a row and the start of the next row"),
- 1,
- G_MAXINT,
- 1,
- PIXBUF_PARAM_FLAGS));
-
- g_object_class_install_property (object_class,
- PROP_PIXELS,
- g_param_spec_pointer ("pixels",
- P_("Pixels"),
- P_("A pointer to the pixel data of the pixbuf"),
- PIXBUF_PARAM_FLAGS));
-}
-
-static void
-gdk_pixbuf_finalize (GObject *object)
-{
- GdkPixbuf *pixbuf = GDK_PIXBUF (object);
-
- if (pixbuf->destroy_fn)
- (* pixbuf->destroy_fn) (pixbuf->pixels, pixbuf->destroy_fn_data);
-
- G_OBJECT_CLASS (gdk_pixbuf_parent_class)->finalize (object);
-}
-
-/* Used as the destroy notification function for gdk_pixbuf_new() */
-static void
-free_buffer (guchar *pixels, gpointer data)
-{
- g_free (pixels);
-}
-
-/**
- * gdk_pixbuf_new:
- * @colorspace: Color space for image
- * @has_alpha: Whether the image should have transparency information
- * @bits_per_sample: Number of bits per color sample
- * @width: Width of image in pixels, must be > 0
- * @height: Height of image in pixels, must be > 0
- *
- * Creates a new #GdkPixbuf structure and allocates a buffer for it. The
- * buffer has an optimal rowstride. Note that the buffer is not cleared;
- * you will have to fill it completely yourself.
- *
- * Return value: A newly-created #GdkPixbuf with a reference count of 1, or
- * %NULL if not enough memory could be allocated for the image buffer.
- **/
-GdkPixbuf *
-gdk_pixbuf_new (GdkColorspace colorspace,
- gboolean has_alpha,
- int bits_per_sample,
- int width,
- int height)
-{
- guchar *buf;
- int channels;
- int rowstride;
- gsize bytes;
-
- g_return_val_if_fail (colorspace == GDK_COLORSPACE_RGB, NULL);
- g_return_val_if_fail (bits_per_sample == 8, NULL);
- g_return_val_if_fail (width > 0, NULL);
- g_return_val_if_fail (height > 0, NULL);
-
- channels = has_alpha ? 4 : 3;
- rowstride = width * channels;
- if (rowstride / channels != width || rowstride + 3 < 0) /* overflow */
- return NULL;
-
- /* Always align rows to 32-bit boundaries */
- rowstride = (rowstride + 3) & ~3;
-
- bytes = height * rowstride;
- if (bytes / rowstride != height) /* overflow */
- return NULL;
-
- buf = g_try_malloc (bytes);
- if (!buf)
- return NULL;
-
- return gdk_pixbuf_new_from_data (buf, colorspace, has_alpha, bits_per_sample,
- width, height, rowstride,
- free_buffer, NULL);
-}
-
-/**
- * gdk_pixbuf_copy:
- * @pixbuf: A pixbuf.
- *
- * Creates a new #GdkPixbuf with a copy of the information in the specified
- * @pixbuf.
- *
- * Return value: A newly-created pixbuf with a reference count of 1, or %NULL if
- * not enough memory could be allocated.
- **/
-GdkPixbuf *
-gdk_pixbuf_copy (const GdkPixbuf *pixbuf)
-{
- guchar *buf;
- int size;
-
- g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), NULL);
-
- /* Calculate a semi-exact size. Here we copy with full rowstrides;
- * maybe we should copy each row individually with the minimum
- * rowstride?
- */
-
- size = ((pixbuf->height - 1) * pixbuf->rowstride +
- pixbuf->width * ((pixbuf->n_channels * pixbuf->bits_per_sample + 7) / 8));
-
- buf = g_try_malloc (size * sizeof (guchar));
- if (!buf)
- return NULL;
-
- memcpy (buf, pixbuf->pixels, size);
-
- return gdk_pixbuf_new_from_data (buf,
- pixbuf->colorspace, pixbuf->has_alpha,
- pixbuf->bits_per_sample,
- pixbuf->width, pixbuf->height,
- pixbuf->rowstride,
- free_buffer,
- NULL);
-}
-
-/**
- * gdk_pixbuf_new_subpixbuf:
- * @src_pixbuf: a #GdkPixbuf
- * @src_x: X coord in @src_pixbuf
- * @src_y: Y coord in @src_pixbuf
- * @width: width of region in @src_pixbuf
- * @height: height of region in @src_pixbuf
- *
- * Creates a new pixbuf which represents a sub-region of
- * @src_pixbuf. The new pixbuf shares its pixels with the
- * original pixbuf, so writing to one affects both.
- * The new pixbuf holds a reference to @src_pixbuf, so
- * @src_pixbuf will not be finalized until the new pixbuf
- * is finalized.
- *
- * Return value: a new pixbuf
- **/
-GdkPixbuf*
-gdk_pixbuf_new_subpixbuf (GdkPixbuf *src_pixbuf,
- int src_x,
- int src_y,
- int width,
- int height)
-{
- guchar *pixels;
- GdkPixbuf *sub;
-
- g_return_val_if_fail (GDK_IS_PIXBUF (src_pixbuf), NULL);
- g_return_val_if_fail (src_x >= 0 && src_x + width <= src_pixbuf->width, NULL);
- g_return_val_if_fail (src_y >= 0 && src_y + height <= src_pixbuf->height, NULL);
-
- pixels = (gdk_pixbuf_get_pixels (src_pixbuf)
- + src_y * src_pixbuf->rowstride
- + src_x * src_pixbuf->n_channels);
-
- sub = gdk_pixbuf_new_from_data (pixels,
- src_pixbuf->colorspace,
- src_pixbuf->has_alpha,
- src_pixbuf->bits_per_sample,
- width, height,
- src_pixbuf->rowstride,
- NULL, NULL);
-
- /* Keep a reference to src_pixbuf */
- g_object_ref (src_pixbuf);
-
- g_object_set_qdata_full (G_OBJECT (sub),
- g_quark_from_static_string ("gdk-pixbuf-subpixbuf-src"),
- src_pixbuf,
- (GDestroyNotify) g_object_unref);
-
- return sub;
-}
-
-
-
-/* Accessors */
-
-/**
- * gdk_pixbuf_get_colorspace:
- * @pixbuf: A pixbuf.
- *
- * Queries the color space of a pixbuf.
- *
- * Return value: Color space.
- **/
-GdkColorspace
-gdk_pixbuf_get_colorspace (const GdkPixbuf *pixbuf)
-{
- g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), GDK_COLORSPACE_RGB);
-
- return pixbuf->colorspace;
-}
-
-/**
- * gdk_pixbuf_get_n_channels:
- * @pixbuf: A pixbuf.
- *
- * Queries the number of channels of a pixbuf.
- *
- * Return value: Number of channels.
- **/
-int
-gdk_pixbuf_get_n_channels (const GdkPixbuf *pixbuf)
-{
- g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), -1);
-
- return pixbuf->n_channels;
-}
-
-/**
- * gdk_pixbuf_get_has_alpha:
- * @pixbuf: A pixbuf.
- *
- * Queries whether a pixbuf has an alpha channel (opacity information).
- *
- * Return value: %TRUE if it has an alpha channel, %FALSE otherwise.
- **/
-gboolean
-gdk_pixbuf_get_has_alpha (const GdkPixbuf *pixbuf)
-{
- g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), FALSE);
-
- return pixbuf->has_alpha ? TRUE : FALSE;
-}
-
-/**
- * gdk_pixbuf_get_bits_per_sample:
- * @pixbuf: A pixbuf.
- *
- * Queries the number of bits per color sample in a pixbuf.
- *
- * Return value: Number of bits per color sample.
- **/
-int
-gdk_pixbuf_get_bits_per_sample (const GdkPixbuf *pixbuf)
-{
- g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), -1);
-
- return pixbuf->bits_per_sample;
-}
-
-/**
- * gdk_pixbuf_get_pixels:
- * @pixbuf: A pixbuf.
- *
- * Queries a pointer to the pixel data of a pixbuf.
- *
- * Return value: A pointer to the pixbuf's pixel data. Please see <xref linkend="image-data"/>
- * for information about how the pixel data is stored in
- * memory.
- **/
-guchar *
-gdk_pixbuf_get_pixels (const GdkPixbuf *pixbuf)
-{
- g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), NULL);
-
- return pixbuf->pixels;
-}
-
-/**
- * gdk_pixbuf_get_width:
- * @pixbuf: A pixbuf.
- *
- * Queries the width of a pixbuf.
- *
- * Return value: Width in pixels.
- **/
-int
-gdk_pixbuf_get_width (const GdkPixbuf *pixbuf)
-{
- g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), -1);
-
- return pixbuf->width;
-}
-
-/**
- * gdk_pixbuf_get_height:
- * @pixbuf: A pixbuf.
- *
- * Queries the height of a pixbuf.
- *
- * Return value: Height in pixels.
- **/
-int
-gdk_pixbuf_get_height (const GdkPixbuf *pixbuf)
-{
- g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), -1);
-
- return pixbuf->height;
-}
-
-/**
- * gdk_pixbuf_get_rowstride:
- * @pixbuf: A pixbuf.
- *
- * Queries the rowstride of a pixbuf, which is the number of bytes between the start of a row
- * and the start of the next row.
- *
- * Return value: Distance between row starts.
- **/
-int
-gdk_pixbuf_get_rowstride (const GdkPixbuf *pixbuf)
-{
- g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), -1);
-
- return pixbuf->rowstride;
-}
-
-
-
-/* General initialization hooks */
-const guint gdk_pixbuf_major_version = GDK_PIXBUF_MAJOR;
-const guint gdk_pixbuf_minor_version = GDK_PIXBUF_MINOR;
-const guint gdk_pixbuf_micro_version = GDK_PIXBUF_MICRO;
-
-const char *gdk_pixbuf_version = GDK_PIXBUF_VERSION;
-
-/* Error quark */
-GQuark
-gdk_pixbuf_error_quark (void)
-{
- return g_quark_from_static_string ("gdk-pixbuf-error-quark");
-}
-
-/**
- * gdk_pixbuf_fill:
- * @pixbuf: a #GdkPixbuf
- * @pixel: RGBA pixel to clear to
- * (0xffffffff is opaque white, 0x00000000 transparent black)
- *
- * Clears a pixbuf to the given RGBA value, converting the RGBA value into
- * the pixbuf's pixel format. The alpha will be ignored if the pixbuf
- * doesn't have an alpha channel.
- *
- **/
-void
-gdk_pixbuf_fill (GdkPixbuf *pixbuf,
- guint32 pixel)
-{
- guchar *pixels;
- guint r, g, b, a;
- guchar *p;
- guint w, h;
-
- g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
-
- if (pixbuf->width == 0 || pixbuf->height == 0)
- return;
-
- pixels = pixbuf->pixels;
-
- r = (pixel & 0xff000000) >> 24;
- g = (pixel & 0x00ff0000) >> 16;
- b = (pixel & 0x0000ff00) >> 8;
- a = (pixel & 0x000000ff);
-
- h = pixbuf->height;
-
- while (h--) {
- w = pixbuf->width;
- p = pixels;
-
- switch (pixbuf->n_channels) {
- case 3:
- while (w--) {
- p[0] = r;
- p[1] = g;
- p[2] = b;
- p += 3;
- }
- break;
- case 4:
- while (w--) {
- p[0] = r;
- p[1] = g;
- p[2] = b;
- p[3] = a;
- p += 4;
- }
- break;
- default:
- break;
- }
-
- pixels += pixbuf->rowstride;
- }
-}
-
-
-
-/**
- * gdk_pixbuf_get_option:
- * @pixbuf: a #GdkPixbuf
- * @key: a nul-terminated string.
- *
- * Looks up @key in the list of options that may have been attached to the
- * @pixbuf when it was loaded, or that may have been attached by another
- * function using gdk_pixbuf_set_option().
- *
- * For instance, the ANI loader provides "Title" and "Artist" options.
- * The ICO, XBM, and XPM loaders provide "x_hot" and "y_hot" hot-spot
- * options for cursor definitions. The PNG loader provides the tEXt ancillary
- * chunk key/value pairs as options. Since 2.12, the TIFF and JPEG loaders
- * return an "orientation" option string that corresponds to the embedded
- * TIFF/Exif orientation tag (if present).
- *
- * Return value: the value associated with @key. This is a nul-terminated
- * string that should not be freed or %NULL if @key was not found.
- **/
-G_CONST_RETURN gchar *
-gdk_pixbuf_get_option (GdkPixbuf *pixbuf,
- const gchar *key)
-{
- gchar **options;
- gint i;
-
- g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), NULL);
- g_return_val_if_fail (key != NULL, NULL);
-
- options = g_object_get_qdata (G_OBJECT (pixbuf),
- g_quark_from_static_string ("gdk_pixbuf_options"));
- if (options) {
- for (i = 0; options[2*i]; i++) {
- if (strcmp (options[2*i], key) == 0)
- return options[2*i+1];
- }
- }
-
- return NULL;
-}
-
-/**
- * gdk_pixbuf_set_option:
- * @pixbuf: a #GdkPixbuf
- * @key: a nul-terminated string.
- * @value: a nul-terminated string.
- *
- * Attaches a key/value pair as an option to a #GdkPixbuf. If %key already
- * exists in the list of options attached to @pixbuf, the new value is
- * ignored and %FALSE is returned.
- *
- * Return value: %TRUE on success.
- *
- * Since: 2.2
- **/
-gboolean
-gdk_pixbuf_set_option (GdkPixbuf *pixbuf,
- const gchar *key,
- const gchar *value)
-{
- GQuark quark;
- gchar **options;
- gint n = 0;
-
- g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), FALSE);
- g_return_val_if_fail (key != NULL, FALSE);
- g_return_val_if_fail (value != NULL, FALSE);
-
- quark = g_quark_from_static_string ("gdk_pixbuf_options");
-
- options = g_object_get_qdata (G_OBJECT (pixbuf), quark);
-
- if (options) {
- for (n = 0; options[2*n]; n++) {
- if (strcmp (options[2*n], key) == 0)
- return FALSE;
- }
-
- g_object_steal_qdata (G_OBJECT (pixbuf), quark);
- options = g_renew (gchar *, options, 2*(n+1) + 1);
- } else {
- options = g_new (gchar *, 3);
- }
-
- options[2*n] = g_strdup (key);
- options[2*n+1] = g_strdup (value);
- options[2*n+2] = NULL;
-
- g_object_set_qdata_full (G_OBJECT (pixbuf), quark,
- options, (GDestroyNotify) g_strfreev);
-
- return TRUE;
-}
-
-static void
-gdk_pixbuf_set_property (GObject *object,
- guint prop_id,
- const GValue *value,
- GParamSpec *pspec)
-{
- GdkPixbuf *pixbuf = GDK_PIXBUF (object);
-
- switch (prop_id)
- {
- case PROP_COLORSPACE:
- pixbuf->colorspace = g_value_get_enum (value);
- break;
- case PROP_N_CHANNELS:
- pixbuf->n_channels = g_value_get_int (value);
- break;
- case PROP_HAS_ALPHA:
- pixbuf->has_alpha = g_value_get_boolean (value);
- break;
- case PROP_BITS_PER_SAMPLE:
- pixbuf->bits_per_sample = g_value_get_int (value);
- break;
- case PROP_WIDTH:
- pixbuf->width = g_value_get_int (value);
- break;
- case PROP_HEIGHT:
- pixbuf->height = g_value_get_int (value);
- break;
- case PROP_ROWSTRIDE:
- pixbuf->rowstride = g_value_get_int (value);
- break;
- case PROP_PIXELS:
- pixbuf->pixels = (guchar *) g_value_get_pointer (value);
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static void
-gdk_pixbuf_get_property (GObject *object,
- guint prop_id,
- GValue *value,
- GParamSpec *pspec)
-{
- GdkPixbuf *pixbuf = GDK_PIXBUF (object);
-
- switch (prop_id)
- {
- case PROP_COLORSPACE:
- g_value_set_enum (value, gdk_pixbuf_get_colorspace (pixbuf));
- break;
- case PROP_N_CHANNELS:
- g_value_set_int (value, gdk_pixbuf_get_n_channels (pixbuf));
- break;
- case PROP_HAS_ALPHA:
- g_value_set_boolean (value, gdk_pixbuf_get_has_alpha (pixbuf));
- break;
- case PROP_BITS_PER_SAMPLE:
- g_value_set_int (value, gdk_pixbuf_get_bits_per_sample (pixbuf));
- break;
- case PROP_WIDTH:
- g_value_set_int (value, gdk_pixbuf_get_width (pixbuf));
- break;
- case PROP_HEIGHT:
- g_value_set_int (value, gdk_pixbuf_get_height (pixbuf));
- break;
- case PROP_ROWSTRIDE:
- g_value_set_int (value, gdk_pixbuf_get_rowstride (pixbuf));
- break;
- case PROP_PIXELS:
- g_value_set_pointer (value, gdk_pixbuf_get_pixels (pixbuf));
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-#define __GDK_PIXBUF_C__
-#include "gdk-pixbuf-aliasdef.c"