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Code Issues Releases Wiki Activity

Get scale factor from GTK on Linux

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This commit is contained in:
Ilya Fedin
2021-01-23 04:22:40 +04:00
committed by John Preston
parent 89ccc95023
commit 3967052375
4 changed files with 50 additions and 0 deletions
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40
Telegram/SourceFiles/platform/linux/linux_gtk_integration.cpp
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@@ -9,6 +9,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
#include "platform/linux/linux_gtk_integration_p.h"
#include "base/platform/base_platform_info.h"
#include "platform/linux/linux_desktop_environment.h"
#include "platform/linux/linux_xlib_helper.h"
#include "platform/linux/linux_gdk_helper.h"
#include "platform/linux/linux_gtk_file_dialog.h"
@@ -207,6 +208,28 @@ bool CursorSizeShouldBeSet() {
return Result;
}
void SetScaleFactor() {
Core::Sandbox::Instance().customEnterFromEventLoop([] {
const auto integration = GtkIntegration::Instance();
if (!integration || !DesktopEnvironment::IsGtkBased()) {
return;
}
const auto scaleFactor = integration->scaleFactor();
if (!scaleFactor.has_value()) {
return;
}
LOG(("GTK scale factor: %1").arg(*scaleFactor));
const int scale = *scaleFactor
* 100
/ Core::Sandbox::Instance().devicePixelRatio();
cSetScreenScale(std::clamp(scale, 100, 300));
});
}
void SetIconTheme() {
Core::Sandbox::Instance().customEnterFromEventLoop([] {
const auto integration = GtkIntegration::Instance();
@@ -312,6 +335,10 @@ void GtkIntegration::load() {
}
if (GtkLoaded) {
LOAD_GTK_SYMBOL(lib_gtk, "gdk_display_get_default", gdk_display_get_default);
LOAD_GTK_SYMBOL(lib_gtk, "gdk_display_get_primary_monitor", gdk_display_get_primary_monitor);
LOAD_GTK_SYMBOL(lib_gtk, "gdk_monitor_get_scale_factor", gdk_monitor_get_scale_factor);
LOAD_GTK_SYMBOL(lib_gtk, "gdk_pixbuf_new_from_file_at_size", gdk_pixbuf_new_from_file_at_size);
LOAD_GTK_SYMBOL(lib_gtk, "gdk_pixbuf_get_has_alpha", gdk_pixbuf_get_has_alpha);
LOAD_GTK_SYMBOL(lib_gtk, "gdk_pixbuf_get_pixels", gdk_pixbuf_get_pixels);
@@ -329,6 +356,7 @@ void GtkIntegration::load() {
LOAD_GTK_SYMBOL(lib_gtk, "gtk_app_chooser_get_app_info", gtk_app_chooser_get_app_info);
LOAD_GTK_SYMBOL(lib_gtk, "gtk_app_chooser_get_type", gtk_app_chooser_get_type);
SetScaleFactor();
SetIconTheme();
SetCursorSize();
@@ -417,6 +445,18 @@ std::optional<QString> GtkIntegration::getStringSetting(
return str;
}
std::optional<int> GtkIntegration::scaleFactor() const {
if (!loaded()
|| (gdk_display_get_default == nullptr)
|| (gdk_display_get_primary_monitor == nullptr)
|| (gdk_monitor_get_scale_factor == nullptr)) {
return std::nullopt;
}
return gdk_monitor_get_scale_factor(
gdk_display_get_primary_monitor(gdk_display_get_default()));
}
bool GtkIntegration::fileDialogSupported() const {
return FileDialog::Gtk::Supported();
}