pidgin/pidgin

Fix transparency plugin for display list/pref changes

14 months ago, Elliott Sales de Andrade
04c0398f1046
Fix transparency plugin for display list/pref changes

There is no longer a buddy list/conversation split, so remove the duplicate settings (half of which were not used any more), and rename them without the differentiating prefix. Also, now that there's only one thing, there's no need for a second "enabled" setting in the plugin that just duplicates the plugin's enabled setting itself, so I removed it.

Instead of adding and removing a slider when the setting changes, I instead opted to always add it, and bind its visibility to the setting instead.

We no longer need a `gtk-config-frame` now that Pidgin uses GPlugin's plugin settings, so remove that and correctly wire up the settings schema so that GPlugin automatically displays settings.

Finally, the scale UI and alpha setting had different ranges. If the setting was moved below the scale's minimum, it would clamp it but not resend that value back to the setting, so things would appear inconsistent. To rectify this, I changed the setting's range up to match the scale.

Testing Done:
* Enabled Transparency plugin, changed around the transparency level and confirmed the main window became transparent.
* Toggled the solid-on-focus setting and confirmed the window lost transparency when focused.
* Toggled the slider setting and confirmed it was added/removed from the window.
* When slider was enabled, changed the setting and confirmed the slider changed and vice versa.

Reviewed at https://reviews.imfreedom.org/r/2394/
/*
* Purple - Internet Messaging Library
* Copyright (C) Pidgin Developers <devel@pidgin.im>
*
* Purple is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* 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, see <https://www.gnu.org/licenses/>.
*/
#include "libpurple/purplegdkpixbuf.h"
#include "debug.h"
void purple_gdk_pixbuf_make_round(GdkPixbuf *pixbuf) {
gint width, height, rowstride;
guchar *pixels;
if (!gdk_pixbuf_get_has_alpha(pixbuf)) {
return;
}
width = gdk_pixbuf_get_width(pixbuf);
height = gdk_pixbuf_get_height(pixbuf);
rowstride = gdk_pixbuf_get_rowstride(pixbuf);
pixels = gdk_pixbuf_get_pixels(pixbuf);
if (width < 6 || height < 6) {
return;
}
/* The following code will convert the alpha of the pixel data in all
* corners to look something like the following diagram.
*
* 00 80 c0 FF FF c0 80 00
* 80 FF FF FF FF FF FF 80
* c0 FF FF FF FF FF FF c0
* FF FF FF FF FF FF FF FF
* FF FF FF FF FF FF FF FF
* c0 FF FF FF FF FF FF c0
* 80 FF FF FF FF FF FF 80
* 00 80 c0 FF FF c0 80 00
*/
/* Top left */
pixels[3] = 0;
pixels[7] = 0x80;
pixels[11] = 0xC0;
pixels[rowstride + 3] = 0x80;
pixels[rowstride * 2 + 3] = 0xC0;
/* Top right */
pixels[width * 4 - 1] = 0;
pixels[width * 4 - 5] = 0x80;
pixels[width * 4 - 9] = 0xC0;
pixels[rowstride + (width * 4) - 1] = 0x80;
pixels[(2 * rowstride) + (width * 4) - 1] = 0xC0;
/* Bottom left */
pixels[(height - 1) * rowstride + 3] = 0;
pixels[(height - 1) * rowstride + 7] = 0x80;
pixels[(height - 1) * rowstride + 11] = 0xC0;
pixels[(height - 2) * rowstride + 3] = 0x80;
pixels[(height - 3) * rowstride + 3] = 0xC0;
/* Bottom right */
pixels[height * rowstride - 1] = 0;
pixels[(height - 1) * rowstride - 1] = 0x80;
pixels[(height - 2) * rowstride - 1] = 0xC0;
pixels[height * rowstride - 5] = 0x80;
pixels[height * rowstride - 9] = 0xC0;
}
gboolean
purple_gdk_pixbuf_is_opaque(GdkPixbuf *pixbuf) {
gint height, rowstride, i;
guchar *pixels;
guchar *row;
if (!gdk_pixbuf_get_has_alpha(pixbuf)) {
return TRUE;
}
height = gdk_pixbuf_get_height (pixbuf);
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
pixels = gdk_pixbuf_get_pixels (pixbuf);
/* check the top row */
row = pixels;
for (i = 3; i < rowstride; i+=4) {
if (row[i] < 0xfe) {
return FALSE;
}
}
/* check the left and right sides */
for (i = 1; i < height - 1; i++) {
row = pixels + (i * rowstride);
if (row[3] < 0xfe || row[rowstride - 1] < 0xfe) {
return FALSE;
}
}
/* check the bottom */
row = pixels + ((height - 1) * rowstride);
for (i = 3; i < rowstride; i += 4) {
if (row[i] < 0xfe) {
return FALSE;
}
}
return TRUE;
}
static GObject *purple_gdk_pixbuf_from_data_helper(const guchar *buf, gsize count, gboolean animated)
{
GObject *pixbuf;
GdkPixbufLoader *loader;
GError *error = NULL;
loader = gdk_pixbuf_loader_new();
if (!gdk_pixbuf_loader_write(loader, buf, count, &error) || error) {
purple_debug_warning("gtkutils", "gdk_pixbuf_loader_write() "
"failed with size=%" G_GSIZE_FORMAT ": %s\n", count,
error ? error->message : "(no error message)");
g_clear_error(&error);
g_object_unref(G_OBJECT(loader));
return NULL;
}
if (!gdk_pixbuf_loader_close(loader, &error) || error) {
purple_debug_warning("gtkutils", "gdk_pixbuf_loader_close() "
"failed for image of size %" G_GSIZE_FORMAT ": %s\n", count,
error ? error->message : "(no error message)");
g_clear_error(&error);
g_object_unref(G_OBJECT(loader));
return NULL;
}
if (animated)
pixbuf = G_OBJECT(gdk_pixbuf_loader_get_animation(loader));
else
pixbuf = G_OBJECT(gdk_pixbuf_loader_get_pixbuf(loader));
if (!pixbuf) {
purple_debug_warning("gtkutils", "%s() returned NULL for image "
"of size %" G_GSIZE_FORMAT "\n",
animated ? "gdk_pixbuf_loader_get_animation"
: "gdk_pixbuf_loader_get_pixbuf", count);
g_object_unref(G_OBJECT(loader));
return NULL;
}
g_object_ref(pixbuf);
g_object_unref(G_OBJECT(loader));
return pixbuf;
}
GdkPixbuf *purple_gdk_pixbuf_from_data(const guchar *buf, gsize count)
{
return GDK_PIXBUF(purple_gdk_pixbuf_from_data_helper(buf, count, FALSE));
}
GdkPixbuf *
purple_gdk_pixbuf_from_image(PurpleImage *image)
{
return purple_gdk_pixbuf_from_data(purple_image_get_data(image),
purple_image_get_data_size(image));
}
GdkPixbuf *purple_gdk_pixbuf_new_from_file(const gchar *filename)
{
GdkPixbuf *pixbuf;
GError *error = NULL;
g_return_val_if_fail(filename != NULL, NULL);
g_return_val_if_fail(filename[0] != '\0', NULL);
pixbuf = gdk_pixbuf_new_from_file(filename, &error);
if (!pixbuf || error) {
purple_debug_warning("gtkutils", "gdk_pixbuf_new_from_file() "
"returned %s for file %s: %s\n",
pixbuf ? "something" : "nothing",
filename,
error ? error->message : "(no error message)");
g_clear_error(&error);
g_clear_object(&pixbuf);
return NULL;
}
return pixbuf;
}
GdkPixbuf *purple_gdk_pixbuf_new_from_file_at_size(const char *filename, int width, int height)
{
GdkPixbuf *pixbuf;
GError *error = NULL;
g_return_val_if_fail(filename != NULL, NULL);
g_return_val_if_fail(filename[0] != '\0', NULL);
pixbuf = gdk_pixbuf_new_from_file_at_size(filename,
width, height, &error);
if (!pixbuf || error) {
purple_debug_warning("gtkutils", "gdk_pixbuf_new_from_file_at_size() "
"returned %s for file %s: %s\n",
pixbuf ? "something" : "nothing",
filename,
error ? error->message : "(no error message)");
g_clear_error(&error);
g_clear_object(&pixbuf);
return NULL;
}
return pixbuf;
}