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/*
* Copyright (C) 2023 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "ScreenManager.h"
#include <WebCore/GtkUtilities.h>
#include <WebCore/PlatformScreen.h>
#include <cmath>
namespace WebKit {
using namespace WebCore;
PlatformDisplayID ScreenManager::generatePlatformDisplayID(GdkMonitor*)
{
static PlatformDisplayID id;
return ++id;
}
ScreenManager::ScreenManager()
{
auto* display = gdk_display_get_default();
#if USE(GTK4)
auto* monitors = gdk_display_get_monitors(display);
auto monitorsCount = g_list_model_get_n_items(monitors);
for (unsigned i = 0; i < monitorsCount; ++i) {
auto monitor = adoptGRef(GDK_MONITOR(g_list_model_get_item(monitors, i)));
addScreen(monitor.get());
}
g_signal_connect(monitors, "items-changed", G_CALLBACK(+[](GListModel* monitors, guint index, guint removedCount, guint addedCount, ScreenManager* manager) {
for (unsigned i = 0; i < removedCount; ++i)
manager->removeScreen(manager->m_screens[index].get());
for (unsigned i = 0; i < addedCount; ++i) {
auto monitor = adoptGRef(GDK_MONITOR(g_list_model_get_item(monitors, index + i)));
manager->addScreen(monitor.get());
}
manager->updatePrimaryDisplayID();
manager->propertiesDidChange();
}), this);
#else
auto monitorsCount = gdk_display_get_n_monitors(display);
for (int i = 0; i < monitorsCount; ++i) {
if (auto* monitor = gdk_display_get_monitor(display, i))
addScreen(monitor);
}
g_signal_connect(display, "monitor-added", G_CALLBACK(+[](GdkDisplay*, GdkMonitor* monitor, ScreenManager* manager) {
manager->addScreen(monitor);
manager->updatePrimaryDisplayID();
manager->propertiesDidChange();
}), this);
g_signal_connect(display, "monitor-removed", G_CALLBACK(+[](GdkDisplay*, GdkMonitor* monitor, ScreenManager* manager) {
manager->removeScreen(monitor);
manager->updatePrimaryDisplayID();
manager->propertiesDidChange();
}), this);
#endif
updatePrimaryDisplayID();
}
void ScreenManager::updatePrimaryDisplayID()
{
auto* display = gdk_display_get_default();
#if USE(GTK4)
// GTK4 doesn't have the concept of primary monitor, so we always use the first one.
auto* monitors = gdk_display_get_monitors(display);
if (!g_list_model_get_n_items(monitors)) {
m_primaryDisplayID = 0;
return;
}
auto monitor = adoptGRef(GDK_MONITOR(g_list_model_get_item(monitors, 0)));
m_primaryDisplayID = displayID(monitor.get());
#else
auto* primaryMonitor = gdk_display_get_primary_monitor(display);
if (!primaryMonitor) {
if (gdk_display_get_n_monitors(display))
primaryMonitor = gdk_display_get_monitor(display, 0);
}
m_primaryDisplayID = primaryMonitor ? displayID(primaryMonitor) : 0;
#endif
}
ScreenProperties ScreenManager::collectScreenProperties() const
{
#if !USE(GTK4)
auto systemVisual = [](GdkDisplay* display) -> GdkVisual* {
if (auto* screen = gdk_display_get_default_screen(display))
return gdk_screen_get_system_visual(screen);
return nullptr;
};
auto* display = gdk_display_get_default();
#endif
ScreenProperties properties;
properties.primaryDisplayID = m_primaryDisplayID;
for (const auto& iter : m_screenToDisplayIDMap) {
GdkMonitor* monitor = iter.key;
ScreenData data;
GdkRectangle workArea;
monitorWorkArea(monitor, &workArea);
data.screenAvailableRect = FloatRect(workArea.x, workArea.y, workArea.width, workArea.height);
GdkRectangle geometry;
gdk_monitor_get_geometry(monitor, &geometry);
data.screenRect = FloatRect(geometry.x, geometry.y, geometry.width, geometry.height);
#if USE(GTK4)
data.screenDepth = 24;
data.screenDepthPerComponent = 8;
#else
auto* visual = systemVisual(display);
data.screenDepth = visual ? gdk_visual_get_depth(visual) : 24;
if (visual) {
int redDepth;
gdk_visual_get_red_pixel_details(visual, nullptr, nullptr, &redDepth);
data.screenDepthPerComponent = redDepth;
} else
data.screenDepthPerComponent = 8;
#endif
data.screenSize = { gdk_monitor_get_width_mm(monitor), gdk_monitor_get_height_mm(monitor) };
static const double millimetresPerInch = 25.4;
double diagonalInPixels = std::hypot(geometry.width, geometry.height);
double diagonalInInches = std::hypot(data.screenSize.width(), data.screenSize.height()) / millimetresPerInch;
data.dpi = diagonalInPixels / diagonalInInches;
properties.screenDataMap.add(iter.value, WTFMove(data));
}
// FIXME: don't use PlatformScreen from the UI process, better use ScreenManager directly.
WebCore::setScreenProperties(properties);
return properties;
}
} // namespace WebKit
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