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[refactor] update title bar rendering for high-DPI scaling support

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This commit is contained in:
dijunkun
2025-12-03 04:20:49 +08:00
parent 2e52818f6f
commit 1e20cb806b
3 changed files with 331 additions and 207 deletions
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27
src/gui/render.cpp
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@@ -661,21 +661,28 @@ int Render::CreateMainWindow() {
ImGui::SetCurrentContext(main_ctx_);
dpi_scale_ = SDL_GetDisplayContentScale(SDL_GetPrimaryDisplay());
LOG_INFO("System DPI scale before window creation: [{}]", dpi_scale_);
UpdateWindowSizeWithDpiScale(dpi_scale_);
if (!SDL_CreateWindowAndRenderer(
"Remote Desk", (int)main_window_width_, (int)main_window_height_,
SDL_WINDOW_HIGH_PIXEL_DENSITY | SDL_WINDOW_BORDERLESS |
SDL_WINDOW_HIDDEN,
&main_window_, &main_renderer_)) {
LOG_ERROR("Error creating main_window_ and main_renderer_: {}",
SDL_GetError());
LOG_ERROR("Error creating MainWindow and MainRenderer: {}", SDL_GetError());
return -1;
}
float dpi_scale = SDL_GetDisplayContentScale(SDL_GetPrimaryDisplay());
if (std::abs(dpi_scale_ - dpi_scale) > 0.01f) {
dpi_scale_ = dpi_scale;
main_window_width_ = (int)(main_window_width_ * dpi_scale_);
main_window_height_ = (int)(main_window_height_ * dpi_scale_);
stream_window_width_ = (int)(stream_window_width_ * dpi_scale_);
stream_window_height_ = (int)(stream_window_height_ * dpi_scale_);
SDL_SetWindowSize(main_window_, (int)main_window_width_,
(int)main_window_height_);
}
SDL_SetWindowResizable(main_window_, false);
// for window region action
@@ -752,8 +759,6 @@ int Render::CreateStreamWindow() {
SetupFontAndStyle(false);
SDL_SetRenderScale(stream_renderer_, dpi_scale_, dpi_scale_);
ImGui_ImplSDL3_InitForSDLRenderer(stream_window_, stream_renderer_);
ImGui_ImplSDLRenderer3_Init(stream_renderer_);
@@ -913,9 +918,10 @@ int Render::DrawMainWindow() {
ImGui_ImplSDL3_NewFrame();
ImGui::NewFrame();
ImGuiIO& io = ImGui::GetIO();
ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(1.0f, 1.0f, 1.0f, 1.0f));
ImGui::SetNextWindowPos(ImVec2(0, 0), ImGuiCond_Always);
ImGui::SetNextWindowSize(ImVec2(main_window_width_, main_window_height_),
ImGui::SetNextWindowSize(ImVec2(io.DisplaySize.x, io.DisplaySize.y),
ImGuiCond_Always);
ImGui::Begin("MainRender", nullptr,
ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoTitleBar |
@@ -938,7 +944,6 @@ int Render::DrawMainWindow() {
ImGui::End();
// Rendering
ImGuiIO& io = ImGui::GetIO();
(void)io;
ImGui::Render();
SDL_SetRenderScale(main_renderer_, io.DisplayFramebufferScale.x,