Examples: GLFW, SDL: Preserve DisplayFramebufferScale when main viewport is minimized. (This is particularly useful for the viewport branch because we are not supporting per-viewport frame-buffer scale. It fixes windows not refreshing when main viewport is minimized.) (#2416)
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index f91d4b2..b4568ec 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -89,6 +89,9 @@
- Misc: Asserting in NewFrame() if style.WindowMinSize is zero or smaller than (1.0f,1.0f).
- Demo: Using GetBackgroundDrawList() and GetForegroundDrawList() in "Custom Rendering" demo.
- Demo: InputText: Demonstrating use of ImGuiInputTextFlags_CallbackResize. (#2006, #1443, #1008).
+- Examples: GLFW, SDL: Preserve DisplayFramebufferScale when main viewport is minimized.
+ (This is particularly useful for the viewport branch because we are not supporting per-viewport
+ frame-buffer scale. It fixes windows not refreshing when main viewport is minimized.) (#2416)
- Examples: OpenGL: Fix to be able to run on ES 2.0 / WebGL 1.0. [@rmitton, @gabrielcuvillier]
- Examples: OpenGL: Fix for OSX not supporting OpenGL 4.5, we don't try to read GL_CLIP_ORIGIN
even if the OpenGL headers/loader happens to define the value. (#2366, #2186)
diff --git a/examples/imgui_impl_glfw.cpp b/examples/imgui_impl_glfw.cpp
index d5c0b13..0ed40cd 100644
--- a/examples/imgui_impl_glfw.cpp
+++ b/examples/imgui_impl_glfw.cpp
@@ -15,6 +15,7 @@
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
+// 2019-03-12: Misc: Preserve DisplayFramebufferScale when main window is minimized.
// 2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window.
// 2018-11-07: Inputs: When installing our GLFW callbacks, we save user's previously installed ones - if any - and chain call them.
// 2018-08-01: Inputs: Workaround for Emscripten which doesn't seem to handle focus related calls.
@@ -313,7 +314,8 @@
glfwGetWindowSize(g_Window, &w, &h);
glfwGetFramebufferSize(g_Window, &display_w, &display_h);
io.DisplaySize = ImVec2((float)w, (float)h);
- io.DisplayFramebufferScale = ImVec2(w > 0 ? ((float)display_w / w) : 0, h > 0 ? ((float)display_h / h) : 0);
+ if (w > 0 && h > 0)
+ io.DisplayFramebufferScale = ImVec2((float)display_w / w, (float)display_h / h);
// Setup time step
double current_time = glfwGetTime();
diff --git a/examples/imgui_impl_sdl.cpp b/examples/imgui_impl_sdl.cpp
index c1188db..528dbba 100644
--- a/examples/imgui_impl_sdl.cpp
+++ b/examples/imgui_impl_sdl.cpp
@@ -17,6 +17,7 @@
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
+// 2019-03-12: Misc: Preserve DisplayFramebufferScale when main window is minimized.
// 2018-12-21: Inputs: Workaround for Android/iOS which don't seem to handle focus related calls.
// 2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window.
// 2018-11-14: Changed the signature of ImGui_ImplSDL2_ProcessEvent() to take a 'const SDL_Event*'.
@@ -279,7 +280,8 @@
SDL_GetWindowSize(window, &w, &h);
SDL_GL_GetDrawableSize(window, &display_w, &display_h);
io.DisplaySize = ImVec2((float)w, (float)h);
- io.DisplayFramebufferScale = ImVec2(w > 0 ? ((float)display_w / w) : 0, h > 0 ? ((float)display_h / h) : 0);
+ if (w > 0 && h > 0)
+ io.DisplayFramebufferScale = ImVec2((float)display_w / w, (float)display_h / h);
// Setup time step (we don't use SDL_GetTicks() because it is using millisecond resolution)
static Uint64 frequency = SDL_GetPerformanceFrequency();
