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Add (de)serializers for GdkRGBA

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This is a format that we use in various
color picker widgets, so support it in GDK.
This commit is contained in:
Matthias Clasen 2019-12-31 10:10:49 -05:00
parent b15c31a3f7
commit 8137dea8c1
2 changed files with 113 additions and 0 deletions
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64
gdk/gdkcontentdeserializer.c
View File

@ -24,6 +24,7 @@
#include "gdkcontentformats.h"
#include "filetransferportalprivate.h"
#include "gdktexture.h"
#include "gdkrgbaprivate.h"
#include <gdk-pixbuf/gdk-pixbuf.h>
@ -848,6 +849,63 @@ file_uri_deserializer (GdkContentDeserializer *deserializer)
g_object_unref (output);
}
static void
color_deserializer_finish (GObject *source,
GAsyncResult *result,
gpointer deserializer)
{
GOutputStream *stream = G_OUTPUT_STREAM (source);
GError *error = NULL;
gssize written;
written = g_output_stream_splice_finish (stream, result, &error);
if (written < 0)
{
gdk_content_deserializer_return_error (deserializer, error);
return;
}
else if (written == 0)
{
GdkRGBA black = GDK_RGBA ("000");
/* Never return NULL, we only return that on error */
g_value_set_boxed (gdk_content_deserializer_get_value (deserializer), &black);
}
else
{
guint16 *data;
GdkRGBA rgba;
data = (guint16 *)g_memory_output_stream_get_data (G_MEMORY_OUTPUT_STREAM (stream));
rgba.red = data[0] / 65535.0;
rgba.green = data[1] / 65535.0;
rgba.blue = data[2] / 65535.0;
rgba.alpha = data[3] / 65535.0;
g_value_set_boxed (gdk_content_deserializer_get_value (deserializer), &rgba);
}
gdk_content_deserializer_return_success (deserializer);
}
static void
color_deserializer (GdkContentDeserializer *deserializer)
{
GOutputStream *output;
guint16 *data;
data = g_new0 (guint16, 4);
output = g_memory_output_stream_new (data, 4 * sizeof (guint16), NULL, g_free);
g_output_stream_splice_async (output,
gdk_content_deserializer_get_input_stream (deserializer),
G_OUTPUT_STREAM_SPLICE_CLOSE_SOURCE | G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET,
gdk_content_deserializer_get_priority (deserializer),
gdk_content_deserializer_get_cancellable (deserializer),
color_deserializer_finish,
deserializer);
g_object_unref (output);
}
static void
init (void)
{
@ -956,5 +1014,11 @@ init (void)
string_deserializer,
(gpointer) "ASCII",
NULL);
gdk_content_register_deserializer ("application/x-color",
GDK_TYPE_RGBA,
color_deserializer,
NULL,
NULL);
}

49
gdk/gdkcontentserializer.c
View File

@ -25,6 +25,7 @@
#include "gdkpixbuf.h"
#include "filetransferportalprivate.h"
#include "gdktextureprivate.h"
#include "gdkrgba.h"
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <string.h>
@ -862,6 +863,48 @@ file_text_serializer (GdkContentSerializer *serializer)
gdk_content_serializer_set_task_data (serializer, path, g_free);
}
static void
color_serializer_finish (GObject *source,
GAsyncResult *result,
gpointer serializer)
{
GOutputStream *stream = G_OUTPUT_STREAM (source);
GError *error = NULL;
if (!g_output_stream_write_all_finish (stream, result, NULL, &error))
gdk_content_serializer_return_error (serializer, error);
else
gdk_content_serializer_return_success (serializer);
}
static void
color_serializer (GdkContentSerializer *serializer)
{
const GValue *value;
GdkRGBA *rgba;
guint16 *data;
value = gdk_content_serializer_get_value (serializer);
rgba = g_value_get_boxed (value);
data = g_new0 (guint16, 4);
if (rgba)
{
data[0] = (guint16) (rgba->red * 65535);
data[1] = (guint16) (rgba->green * 65535);
data[2] = (guint16) (rgba->blue * 65535);
data[3] = (guint16) (rgba->alpha * 65535);
}
g_output_stream_write_all_async (gdk_content_serializer_get_output_stream (serializer),
data,
4 * sizeof (guint16),
gdk_content_serializer_get_priority (serializer),
gdk_content_serializer_get_cancellable (serializer),
color_serializer_finish,
serializer);
gdk_content_serializer_set_task_data (serializer, data, g_free);
}
static void
init (void)
{
@ -984,5 +1027,11 @@ init (void)
string_serializer,
(gpointer) "ASCII",
NULL);
gdk_content_register_serializer (GDK_TYPE_RGBA,
"application/x-color",
color_serializer,
NULL,
NULL);
}