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Viewport, DPI: Some early work on per-viewport DPI support. At the moment the easiest way is to replace fonts during the ChangedViewport callback, but down the line we should aim at handling some of it at ImFont level. (#1542, #1676)

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This commit is contained in:
omar
2018-03-09 19:08:47 +01:00
parent a2fbcc9ad4
commit 5e63711084
5 changed files with 69 additions and 23 deletions
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15
examples/directx11_example/main.cpp
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@ -67,6 +67,10 @@ void CleanupDeviceD3D()
if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
}
#ifndef WM_DPICHANGED
#define WM_DPICHANGED 0x02E0 // From Windows SDK 8.1+ headers
#endif
extern LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
@ -92,6 +96,15 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
case WM_DESTROY:
PostQuitMessage(0);
return 0;
case WM_DPICHANGED:
if (ImGui::GetIO().ConfigFlags & ImGuiConfigFlags_EnableDpiScaleViewports)
{
//const int dpi = HIWORD(wParam);
//printf("WM_DPICHANGED to %d (%.0f%%)\n", dpi, (float)dpi / 96.0f * 100.0f);
const RECT* suggested_rect = (RECT*)lParam;
::SetWindowPos(hWnd, NULL, suggested_rect->left, suggested_rect->top, suggested_rect->right - suggested_rect->left, suggested_rect->bottom - suggested_rect->top, SWP_NOZORDER | SWP_NOACTIVATE);
}
break;
}
return DefWindowProc(hWnd, msg, wParam, lParam);
}
@ -121,6 +134,8 @@ int main(int, char**)
ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO(); (void)io;
io.ConfigFlags |= ImGuiConfigFlags_EnableViewports;
io.ConfigFlags |= ImGuiConfigFlags_EnableDpiScaleFonts;
io.ConfigFlags |= ImGuiConfigFlags_EnableDpiScaleViewports;
io.ConfigFlags |= ImGuiConfigFlags_PlatformNoTaskBar;
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls