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mirror of synced 2024-12-11 15:36:01 +01:00
ImHex/main/gui/source/window/web_window.cpp

99 lines
2.4 KiB
C++

#include "window.hpp"
#if defined(OS_WEB)
#include <emscripten.h>
#include <emscripten/html5.h>
#include <hex/api/event.hpp>
// Function used by c++ to get the size of the html canvas
EM_JS(int, canvas_get_width, (), {
return Module.canvas.width;
});
// Function used by c++ to get the size of the html canvas
EM_JS(int, canvas_get_height, (), {
return Module.canvas.height;
});
// Function called by javascript
EM_JS(void, resizeCanvas, (), {
js_resizeCanvas();
});
EM_JS(void, setupThemeListener, (), {
window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', event => {
Module._handleThemeChange();
});
});
EM_JS(bool, isDarkModeEnabled, (), {
return window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches
});
EMSCRIPTEN_KEEPALIVE
extern "C" void handleThemeChange() {
hex::EventManager::post<hex::EventOSThemeChanged>();
}
namespace hex {
void nativeErrorMessage(const std::string &message) {
log::fatal(message);
EM_ASM({
alert(UTF8ToString($0));
}, message.c_str());
}
void Window::initNative() {
EM_ASM({
// Save data directory
FS.mkdir("/home/web_user/.local");
FS.mount(IDBFS, {}, '/home/web_user/.local');
FS.syncfs(true, function (err) {
if (!err)
return;
alert("Failed to load permanent file system: "+err);
});
});
}
void Window::setupNativeWindow() {
resizeCanvas();
setupThemeListener();
bool themeFollowSystem = ImHexApi::System::usesSystemThemeDetection();
EventManager::subscribe<EventOSThemeChanged>(this, [themeFollowSystem] {
if (!themeFollowSystem) return;
EventManager::post<RequestChangeTheme>(!isDarkModeEnabled() ? "Light" : "Dark");
});
if (themeFollowSystem)
EventManager::post<EventOSThemeChanged>();
}
void Window::beginNativeWindowFrame() {
static i32 prevWidth = 0;
static i32 prevHeight = 0;
auto width = canvas_get_width();
auto height = canvas_get_height();
if (prevWidth != width || prevHeight != height) {
// Size has changed
prevWidth = width;
prevHeight = height;
this->resize(width, height);
}
}
void Window::endNativeWindowFrame() {
}
}
#endif