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// -*- Mode: C++; indent-tabs-mode: nil; tab-width: 2 -*-
/*
* Copyright (C) 2013 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* 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 <http://www.gnu.org/licenses/>.
*
* Authored by: Andrea Azzarone <andrea.azzarone@canonical.com>
*/
#include <Nux/Nux.h>
#include "BackgroundSettings.h"
#include <libgnome-desktop/gnome-bg.h>
#include "LockScreenSettings.h"
#include "unity-shared/CairoTexture.h"
#include "unity-shared/PanelStyle.h"
#include "unity-shared/UnitySettings.h"
#include "unity-shared/UScreen.h"
namespace unity
{
namespace lockscreen
{
namespace
{
const std::string SETTINGS_NAME = "org.gnome.desktop.background";
inline int GetGridOffset(int size) { return (size % Settings::GRID_SIZE) / 2; }
}
BackgroundSettings::BackgroundSettings()
: gnome_bg_(gnome_bg_new())
{
glib::Object<GSettings> settings(g_settings_new(SETTINGS_NAME.c_str()));
gnome_bg_load_from_preferences(gnome_bg_, settings);
}
BaseTexturePtr BackgroundSettings::GetBackgroundTexture(int monitor)
{
nux::Geometry const& geo = UScreen::GetDefault()->GetMonitorGeometry(monitor);
double scale = unity::Settings::Instance().em(monitor)->DPIScale();
auto& settings = Settings::Instance();
nux::CairoGraphics cairo_graphics(CAIRO_FORMAT_ARGB32, geo.width, geo.height);
cairo_surface_set_device_scale(cairo_graphics.GetSurface(), scale, scale);
cairo_t* c = cairo_graphics.GetInternalContext();
double s_width = geo.width / scale;
double s_height = geo.height / scale;
cairo_surface_t* bg_surface = nullptr;
if (settings.use_user_background())
{
bg_surface = gnome_bg_create_surface(gnome_bg_, gdk_get_default_root_window(), s_width, s_height, FALSE);
}
else if (!settings.background().empty())
{
glib::Object<GdkPixbuf> pixbuf(gdk_pixbuf_new_from_file_at_scale(settings.background().c_str(), s_width, s_height, FALSE, NULL));
if (pixbuf)
bg_surface = gdk_cairo_surface_create_from_pixbuf(pixbuf, 0, NULL);
}
if (bg_surface)
{
cairo_set_source_surface(c, bg_surface, 0, 0);
cairo_paint(c);
cairo_surface_destroy(bg_surface);
}
else
{
auto const& bg_color = settings.background_color();
cairo_set_source_rgb(c, bg_color.red, bg_color.green, bg_color.blue);
cairo_paint(c);
}
if (!settings.logo().empty())
{
int grid_x_offset = GetGridOffset(s_width);
int grid_y_offset = GetGridOffset(s_height);
cairo_surface_t* logo_surface = cairo_image_surface_create_from_png(settings.logo().c_str());
if (logo_surface)
{
int height = cairo_image_surface_get_height(logo_surface);
int x = grid_x_offset;
int y = grid_y_offset + Settings::GRID_SIZE * (s_height / Settings::GRID_SIZE - 1) - height;
cairo_save(c);
cairo_translate(c, x, y);
cairo_set_source_surface(c, logo_surface, 0, 0);
cairo_paint_with_alpha(c, 0.5);
cairo_surface_destroy(logo_surface);
cairo_restore(c);
}
}
if (settings.draw_grid())
{
double width = s_width;
double height = s_height;
int grid_x_offset = GetGridOffset(width);
int grid_y_offset = GetGridOffset(height) + panel::Style::Instance().PanelHeight(monitor);
// overlay grid
cairo_surface_t* overlay_surface = cairo_surface_create_similar(cairo_graphics.GetSurface(),
CAIRO_CONTENT_COLOR_ALPHA,
Settings::GRID_SIZE,
Settings::GRID_SIZE);
cairo_t* oc = cairo_create(overlay_surface);
cairo_rectangle(oc, 0, 0, 1, 1);
cairo_rectangle(oc, Settings::GRID_SIZE - 1, 0, 1, 1);
cairo_rectangle(oc, 0, Settings::GRID_SIZE - 1, 1, 1);
cairo_rectangle(oc, Settings::GRID_SIZE - 1, Settings::GRID_SIZE - 1, 1, 1);
cairo_set_source_rgba(oc, 1.0, 1.0, 1.0, 0.25);
cairo_fill(oc);
cairo_pattern_t* overlay = cairo_pattern_create_for_surface(overlay_surface);
cairo_matrix_t matrix;
cairo_matrix_init_identity(&matrix);
cairo_matrix_translate(&matrix, -grid_x_offset, -grid_y_offset);
cairo_pattern_set_matrix(overlay, &matrix);
cairo_pattern_set_extend(overlay, CAIRO_EXTEND_REPEAT);
cairo_save(c);
cairo_set_source(c, overlay);
cairo_rectangle(c, 0, 0, width, height);
cairo_fill(c);
cairo_restore(c);
cairo_pattern_destroy(overlay);
cairo_surface_destroy(overlay_surface);
cairo_destroy(oc);
}
return texture_ptr_from_cairo_graphics(cairo_graphics);
}
} // lockscreen
} // unity
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