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Windows: Fix file selection dialogs blurry on HiDPI monitors

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This commit is contained in:
Kovid Goyal 2016-07-21 20:12:28 +05:30
parent 24c7756df1
commit 116f6a75f0
1 changed files with 49 additions and 1 deletions
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50
setup/installer/windows/file_dialogs.cpp
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@ -19,6 +19,54 @@
#define PRINTERR(x) fprintf(stderr, "%s", x); fflush(stderr); #define PRINTERR(x) fprintf(stderr, "%s", x); fflush(stderr);
#define SECRET_SIZE 32 #define SECRET_SIZE 32
void set_dpi_aware() {
// Try SetProcessDpiAwareness first
HINSTANCE sh_core = LoadLibraryW(L"Shcore.dll");
if (sh_core) {
enum ProcessDpiAwareness
{
ProcessDpiUnaware = 0,
ProcessSystemDpiAware = 1,
ProcessPerMonitorDpiAware = 2
};
typedef HRESULT (WINAPI* SetProcessDpiAwarenessFuncType)(ProcessDpiAwareness);
SetProcessDpiAwarenessFuncType SetProcessDpiAwarenessFunc = reinterpret_cast<SetProcessDpiAwarenessFuncType>(GetProcAddress(sh_core, "SetProcessDpiAwareness"));
if (SetProcessDpiAwarenessFunc) {
// We only check for E_INVALIDARG because we would get
// E_ACCESSDENIED if the DPI was already set previously
// and S_OK means the call was successful
if (SetProcessDpiAwarenessFunc(ProcessPerMonitorDpiAware) == E_INVALIDARG) {
PRINTERR("Failed to set process DPI awareness using SetProcessDpiAwareness");
} else {
FreeLibrary(sh_core);
return;
}
}
FreeLibrary(sh_core);
}
// Fall back to SetProcessDPIAware if SetProcessDpiAwareness
// is not available on this system
HINSTANCE user32 = LoadLibraryW(L"user32.dll");
if (user32) {
typedef BOOL (WINAPI* SetProcessDPIAwareFuncType)(void);
SetProcessDPIAwareFuncType SetProcessDPIAwareFunc = reinterpret_cast<SetProcessDPIAwareFuncType>(GetProcAddress(user32, "SetProcessDPIAware"));
if (SetProcessDPIAwareFunc) {
if (!SetProcessDPIAwareFunc()) {
PRINTERR("Failed to set process DPI awareness using SetProcessDPIAware");
}
}
FreeLibrary(user32);
}
}
bool write_bytes(HANDLE pipe, DWORD sz, const char* buf) { bool write_bytes(HANDLE pipe, DWORD sz, const char* buf) {
DWORD written = 0; DWORD written = 0;
if (!WriteFile(pipe, buf, sz, &written, NULL)) { if (!WriteFile(pipe, buf, sz, &written, NULL)) {
@ -275,6 +323,6 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine
if (!write_bytes(pipe, SECRET_SIZE+1, secret)) return 1; if (!write_bytes(pipe, SECRET_SIZE+1, secret)) return 1;
return write_bytes(pipe, echo_sz, echo_buf) ? 0 : 1; return write_bytes(pipe, echo_sz, echo_buf) ? 0 : 1;
} }
set_dpi_aware();
return show_dialog(pipe, secret, parent, save_dialog, title, folder, filename, save_path, multiselect, confirm_overwrite, only_dirs, no_symlinks, file_types, num_file_types); return show_dialog(pipe, secret, parent, save_dialog, title, folder, filename, save_path, multiselect, confirm_overwrite, only_dirs, no_symlinks, file_types, num_file_types);
} }