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// -*- Mode: C++; indent-tabs-mode: nil; tab-width: 2 -*-
/*
* Copyright (C) 2012-2013 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: Jason Smith <jason.smith@canonical.com>
* Marco Trevisan <marco.trevisan@canonical.com>
* Brandon Schaefer <brandon.schaefer@canonical.com>
*/
#include <NuxCore/Logger.h>
#include "UnitySettings.h"
#include "UnityWindowStyle.h"
#include "UScreen.h"
#include "config.h"
#include <unordered_set>
namespace unity
{
namespace ui
{
namespace
{
const char* const SWITCHER_TOP = PKGDATADIR"/switcher_top.png";
const char* const SWITCHER_LEFT = PKGDATADIR"/switcher_left.png";
const char* const SWITCHER_CORNER = PKGDATADIR"/switcher_corner.png";
const char* const DIALOG_CLOSE = PKGDATADIR"/dialog_close.png";
const char* const DIALOG_HIGHLIGHT = PKGDATADIR"/dialog_close_highlight.png";
const char* const DIALOG_PRESS = PKGDATADIR"/dialog_close_press.png";
RawPixel const INTERNAL_OFFSET = 20_em;
RawPixel const BORDER_SIZE = 30_em;
RawPixel const CLOSE_PADDING = 3_em;
}
DECLARE_LOGGER(logger, "unity.ui.unity.window.style");
UnityWindowStyle::UnityWindowStyle()
{
unsigned monitors = UScreen::GetDefault()->GetPluggedMonitorsNumber();
auto& settings = Settings::Instance();
// Pre-load scale values per monitor
for (unsigned i = 0; i < monitors; ++i)
{
double scale = settings.Instance().em(i)->DPIScale();
if (unity_window_textures_.find(scale) == unity_window_textures_.end())
LoadAllTextureInScale(scale);
}
settings.Instance().dpi_changed.connect(sigc::mem_fun(this, &UnityWindowStyle::CleanUpUnusedTextures));
UScreen::GetDefault()->changed.connect(sigc::mem_fun(this, &UnityWindowStyle::OnMonitorChanged));
}
void UnityWindowStyle::LoadAllTextureInScale(double scale)
{
auto& window_textures = unity_window_textures_[scale];
window_textures[unsigned(WindowTextureType::BACKGROUND_TOP)] = LoadTexture(scale, SWITCHER_TOP);
window_textures[unsigned(WindowTextureType::BACKGROUND_LEFT)] = LoadTexture(scale, SWITCHER_LEFT);
window_textures[unsigned(WindowTextureType::BACKGROUND_CORNER)] = LoadTexture(scale, SWITCHER_CORNER);
window_textures[unsigned(WindowTextureType::CLOSE_ICON)] = LoadTexture(scale, DIALOG_CLOSE);
window_textures[unsigned(WindowTextureType::CLOSE_ICON_HIGHLIGHTED)] = LoadTexture(scale, DIALOG_HIGHLIGHT);
window_textures[unsigned(WindowTextureType::CLOSE_ICON_PRESSED)] = LoadTexture(scale, DIALOG_PRESS);
}
nux::BaseTexture* UnityWindowStyle::LoadTexture(double scale, const char* const texture_name) const
{
RawPixel max_size = GetDefaultMaxTextureSize(texture_name);
return nux::CreateTexture2DFromFile(texture_name, max_size.CP(scale), true);
}
RawPixel UnityWindowStyle::GetDefaultMaxTextureSize(const char* const texture_name) const
{
nux::Size size;
gdk_pixbuf_get_file_info(texture_name, &size.width, &size.height);
RawPixel max_size = std::max(std::round(size.width), std::round(size.height));
return max_size;
}
void UnityWindowStyle::OnMonitorChanged(int primary, std::vector<nux::Geometry> const& monitors)
{
CleanUpUnusedTextures();
}
// Get current in use scale values, if a scaled value is allocated, but
// not in use clean up the scaled textures in unity_window_textures
void UnityWindowStyle::CleanUpUnusedTextures()
{
unsigned monitors = UScreen::GetDefault()->GetPluggedMonitorsNumber();
auto& settings = Settings::Instance();
std::unordered_set<double> used_scales;
for (unsigned i = 0; i < monitors; ++i)
used_scales.insert(settings.em(i)->DPIScale());
for (auto it = unity_window_textures_.begin(); it != unity_window_textures_.end();)
{
if (used_scales.find(it->first) == used_scales.end())
{
it = unity_window_textures_.erase(it);
}
else
{
++it;
}
}
}
UnityWindowStyle::Ptr const& UnityWindowStyle::Get()
{
// This is set only the first time;
static UnityWindowStyle::Ptr instance(new UnityWindowStyle());
return instance;
}
int UnityWindowStyle::GetBorderSize(double scale) const
{
return BORDER_SIZE.CP(scale); // as measured from textures
}
int UnityWindowStyle::GetInternalOffset(double scale) const
{
return INTERNAL_OFFSET.CP(scale);
}
int UnityWindowStyle::GetCloseButtonPadding(double scale) const
{
return CLOSE_PADDING.CP(scale);
}
UnityWindowStyle::BaseTexturePtr UnityWindowStyle::GetTexture(double scale, WindowTextureType const& type)
{
auto it = unity_window_textures_.find(scale);
if (it == unity_window_textures_.end())
{
LoadAllTextureInScale(scale);
it = unity_window_textures_.find(scale);
if (it == unity_window_textures_.end())
{
LOG_ERROR(logger) << "Failed to create unity window style textures, for scale size: " << scale;
return BaseTexturePtr(nullptr);
}
}
return it->second[unsigned(type)];
}
} // namespace ui
} // namespace unity
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