Working n Windows

CMakeLists.txt

@@ -139,7 +139,7 @@ if(NOT MSVC)
     add_compile_options("$<$<CONFIG:Debug>:-g>")
     add_compile_options("$<IF:$<CONFIG:Debug>,-O0,-O2>")
 
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -pedantic -Wno-switch -Wno-unused-function -Wno-implicit-fallthrough")
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -pedantic -Wno-switch -Wno-unused-function -Wno-implicit-fallthrough -Wno-cast-function-type")
     set(CMAKE_CXX_FLAGS "${CMAKE_C_FLAGS}")
     set(CMAKE_OBJC_FLAGS "${CMAKE_C_FLAGS}")
     set(CMAKE_OBJCXX_FLAGS "${CMAKE_CXX_FLAGS}")

include/MiniFB.h

@@ -38,6 +38,10 @@ void *              mfb_get_user_data(struct mfb_window *window);
 // Set viewport (useful when resize)
 bool                mfb_set_viewport(struct mfb_window *window, unsigned offset_x, unsigned offset_y, unsigned width, unsigned height);
 
+// DPI
+void                mfb_get_monitor_dpi(struct mfb_window *window, float *dpi_x, float *dpi_y);
+
+// Callbacks
 void                mfb_set_active_callback(struct mfb_window *window, mfb_active_func callback);
 void                mfb_set_resize_callback(struct mfb_window *window, mfb_resize_func callback);
 void                mfb_set_keyboard_callback(struct mfb_window *window, mfb_keyboard_func callback);
@@ -46,6 +50,7 @@ void                mfb_set_mouse_button_callback(struct mfb_window *window, mfb
 void                mfb_set_mouse_move_callback(struct mfb_window *window, mfb_mouse_move_func callback);
 void                mfb_set_mouse_scroll_callback(struct mfb_window *window, mfb_mouse_scroll_func callback);
 
+// Getters
 const char *        mfb_get_key_name(mfb_key key);
 
 bool                mfb_is_window_active(struct mfb_window *window);
@@ -58,9 +63,11 @@ float               mfb_get_mouse_scroll_y(struct mfb_window *window);      // M
 const uint8_t *     mfb_get_mouse_button_buffer(struct mfb_window *window); // One byte for every button. Press (1), Release 0. (up to 8 buttons)
 const uint8_t *     mfb_get_key_buffer(struct mfb_window *window);          // One byte for every key. Press (1), Release 0.
 
+// FPS
 void                mfb_set_target_fps(uint32_t fps);
 bool                mfb_wait_sync(struct mfb_window *window);
 
+// Timer
 struct mfb_timer *  mfb_timer_create(void);
 void                mfb_timer_destroy(struct mfb_timer *tmr);
 void                mfb_timer_reset(struct mfb_timer *tmr);

src/windows/WinMiniFB.c

@@ -12,6 +12,123 @@
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
+// Copied (and modified) from Windows Kit 10 to avoid setting _WIN32_WINNT to a higher version
+typedef enum mfb_PROCESS_DPI_AWARENESS {
+    mfb_PROCESS_DPI_UNAWARE           = 0,
+    mfb_PROCESS_SYSTEM_DPI_AWARE      = 1,
+    mfb_PROCESS_PER_MONITOR_DPI_AWARE = 2
+} mfb_PROCESS_DPI_AWARENESS;
+
+typedef enum mfb_MONITOR_DPI_TYPE {
+    mfb_MDT_EFFECTIVE_DPI             = 0,
+    mfb_MDT_ANGULAR_DPI               = 1,
+    mfb_MDT_RAW_DPI                   = 2,
+    mfb_MDT_DEFAULT                   = mfb_MDT_EFFECTIVE_DPI
+} mfb_MONITOR_DPI_TYPE;
+
+#define mfb_DPI_AWARENESS_CONTEXT_UNAWARE               ((HANDLE) -1)
+#define mfb_DPI_AWARENESS_CONTEXT_SYSTEM_AWARE          ((HANDLE) -2)
+#define mfb_DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE     ((HANDLE) -3)
+#define mfb_DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2  ((HANDLE) -4)
+#define mfb_DPI_AWARENESS_CONTEXT_UNAWARE_GDISCALED     ((HANDLE) -5)
+
+// user32.dll
+typedef BOOL(WINAPI *PFN_SetProcessDPIAware)(void);
+typedef BOOL(WINAPI *PFN_SetProcessDpiAwarenessContext)(HANDLE);
+
+HMODULE                           mfb_user32_dll                    = 0x0;
+PFN_SetProcessDPIAware            mfb_SetProcessDPIAware            = 0x0;
+PFN_SetProcessDpiAwarenessContext mfb_SetProcessDpiAwarenessContext = 0x0;
+
+// shcore.dll
+typedef HRESULT(WINAPI *PFN_SetProcessDpiAwareness)(mfb_PROCESS_DPI_AWARENESS);
+typedef HRESULT(WINAPI *PFN_GetDpiForMonitor)(HMONITOR, mfb_MONITOR_DPI_TYPE, UINT *, UINT *);
+
+HMODULE                           mfb_shcore_dll                    = 0x0;
+PFN_SetProcessDpiAwareness        mfb_SetProcessDpiAwareness        = 0x0;
+PFN_GetDpiForMonitor              mfb_GetDpiForMonitor              = 0x0;
+
+//--
+void
+load_functions() {
+    if(mfb_user32_dll == 0x0) {
+        mfb_user32_dll = LoadLibraryA("user32.dll");
+        if (mfb_user32_dll != 0x0) {
+            mfb_SetProcessDPIAware = (PFN_SetProcessDPIAware) GetProcAddress(mfb_user32_dll, "SetProcessDPIAware");
+            mfb_SetProcessDpiAwarenessContext = (PFN_SetProcessDpiAwarenessContext) GetProcAddress(mfb_user32_dll, "SetProcessDpiAwarenessContext");
+        }
+    }
+
+    if(mfb_shcore_dll == 0x0) {
+        mfb_shcore_dll = LoadLibraryA("shcore.dll");
+        if (mfb_shcore_dll != 0x0) {
+            mfb_SetProcessDpiAwareness = (PFN_SetProcessDpiAwareness) GetProcAddress(mfb_shcore_dll, "SetProcessDpiAwareness");
+            mfb_GetDpiForMonitor = (PFN_GetDpiForMonitor) GetProcAddress(mfb_shcore_dll, "GetDpiForMonitor");
+        }
+    }
+}
+
+//--
+void
+dpi_aware() {
+    if (mfb_SetProcessDpiAwarenessContext != 0x0) {
+        mfb_SetProcessDpiAwarenessContext(mfb_DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2);
+    }
+    else if (mfb_SetProcessDpiAwareness != 0x0) {
+        mfb_SetProcessDpiAwareness(mfb_PROCESS_PER_MONITOR_DPI_AWARE);
+    }
+    else if (mfb_SetProcessDPIAware != 0x0) {
+        mfb_SetProcessDPIAware();
+    }
+}
+
+//--
+void 
+get_monitor_dpi(HWND hWnd, float *dpi_x, float *dpi_y) {
+    UINT    xdpi, ydpi;
+
+    if(mfb_GetDpiForMonitor != 0x0) {
+        HMONITOR monitor = MonitorFromWindow(hWnd, MONITOR_DEFAULTTONEAREST);
+        mfb_GetDpiForMonitor(monitor, mfb_MDT_EFFECTIVE_DPI, &xdpi, &ydpi);
+    }
+    else {
+        const HDC dc = GetDC(hWnd);
+        xdpi = GetDeviceCaps(dc, LOGPIXELSX);
+        ydpi = GetDeviceCaps(dc, LOGPIXELSY);
+        ReleaseDC(NULL, dc);
+    }
+
+    if (dpi_x) {
+        *dpi_x = xdpi / (float) USER_DEFAULT_SCREEN_DPI;
+        if(*dpi_x == 0) {
+            *dpi_x = 1;
+        }
+    }
+
+    if (dpi_y) {
+        *dpi_y = ydpi / (float) USER_DEFAULT_SCREEN_DPI;
+        if (*dpi_y == 0) {
+            *dpi_y = 1;
+        }
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void
+mfb_get_monitor_dpi(struct mfb_window *window, float *dpi_x, float *dpi_y) {
+    HWND hWnd = 0x0;
+
+    if(window != 0x0) {
+        SWindowData     *window_data     = (SWindowData *) window;
+        SWindowData_Win *window_data_win = (SWindowData_Win *) window_data->specific;
+        hWnd = window_data_win->window;
+    }
+    get_monitor_dpi(hWnd, dpi_x, dpi_y);
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
 long    s_window_style = WS_POPUP | WS_SYSMENU | WS_CAPTION;
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -37,8 +154,7 @@ WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
 #if !defined(USE_OPENGL_API)
         case WM_PAINT:
         {
-            if (window_data && window_data->draw_buffer && window_data_win)
+            if (window_data && window_data->draw_buffer && window_data_win) {
-            {
                 StretchDIBits(window_data_win->hdc, window_data->dst_offset_x, window_data->dst_offset_y, window_data->dst_width, window_data->dst_height, 0, 0, window_data->buffer_width, window_data->buffer_height, window_data->draw_buffer, 
                               window_data_win->bitmapInfo, DIB_RGB_COLORS, SRCCOPY);
             }
@@ -176,16 +292,28 @@ WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
 
         case WM_SIZE:
             if (window_data) {
+                float       scaleX, scaleY;
+                uint32_t    width, height;
+
+                if(wParam == SIZE_MINIMIZED) {
+                    return res;
+                }
+
+                get_monitor_dpi(hWnd, &scaleX, &scaleY);
                 window_data->window_width  = LOWORD(lParam);
                 window_data->window_height = HIWORD(lParam);
-                resize_dst(window_data, LOWORD(lParam), HIWORD(lParam));
+                resize_dst(window_data, window_data->window_width, window_data->window_height);
 
 #if !defined(USE_OPENGL_API)
                 BitBlt(window_data_win->hdc, 0, 0, window_data->window_width, window_data->window_height, 0, 0, 0, BLACKNESS);
 #else
                 resize_GL(window_data);
 #endif
-                kCall(resize_func, window_data->window_width, window_data->window_height);
+                if(window_data->window_width != 0 && window_data->window_height != 0) {
+                    width  = (uint32_t) (window_data->window_width  / scaleX);
+                    height = (uint32_t) (window_data->window_height / scaleY);
+                    kCall(resize_func, width, height);
+                }
             }
             break;
 
@@ -219,6 +347,8 @@ mfb_open_ex(const char *title, unsigned width, unsigned height, unsigned flags)
     RECT rect = { 0 };
     int  x = 0, y = 0;
 
+    load_functions();
+    dpi_aware();
     init_keycodes();
 
     SWindowData *window_data = malloc(sizeof(SWindowData));
@@ -287,8 +417,11 @@ mfb_open_ex(const char *title, unsigned width, unsigned height, unsigned flags)
         }
     }
     else if (!(flags & WF_FULLSCREEN)) {
-        rect.right  = width;
+        float dpi_x, dpi_y;
-        rect.bottom = height;
+        get_monitor_dpi(0, &dpi_x, &dpi_y);
+
+        rect.right  = (LONG) (width  * dpi_x);
+        rect.bottom = (LONG) (height * dpi_y);
 
         AdjustWindowRect(&rect, s_window_style, 0);
 
@@ -557,11 +690,7 @@ extern short int g_keycodes[512];
 
 void 
 init_keycodes() {
-
+    if(g_keycodes[0x00B] != KB_KEY_0) {
-    // Clear keys
-    for (size_t i = 0; i < sizeof(g_keycodes) / sizeof(g_keycodes[0]); ++i) 
-        g_keycodes[i] = 0;
-
         g_keycodes[0x00B] = KB_KEY_0;
         g_keycodes[0x002] = KB_KEY_1;
         g_keycodes[0x003] = KB_KEY_2;
@@ -684,6 +813,7 @@ init_keycodes() {
         g_keycodes[0x037] = KB_KEY_KP_MULTIPLY;
         g_keycodes[0x04A] = KB_KEY_KP_SUBTRACT;
     }
+}
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
@@ -716,6 +846,8 @@ translate_key(unsigned int wParam, unsigned long lParam) {
 bool 
 mfb_set_viewport(struct mfb_window *window, unsigned offset_x, unsigned offset_y, unsigned width, unsigned height) {
     SWindowData     *window_data     = (SWindowData *) window;
+    SWindowData_Win *window_data_win = 0x0;
+    float           scaleX, scaleY;
 
     if(window_data == 0x0) {
         return false;
@@ -728,11 +860,14 @@ mfb_set_viewport(struct mfb_window *window, unsigned offset_x, unsigned offset_y
         return false;
     }
 
-    window_data->dst_offset_x = offset_x;
+    window_data_win = (SWindowData_Win *) window_data->specific;
-    window_data->dst_offset_y = offset_y;
 
-    window_data->dst_width    = width;
+    get_monitor_dpi(window_data_win->window, &scaleX, &scaleY);
-    window_data->dst_height   = height;
+    window_data->dst_offset_x = (uint32_t) (offset_x * scaleX);
+    window_data->dst_offset_y = (uint32_t) (offset_y * scaleY);
+
+    window_data->dst_width    = (uint32_t) (width  * scaleX);
+    window_data->dst_height   = (uint32_t) (height * scaleY);
 
     calc_dst_factor(window_data, window_data->window_width, window_data->window_height);