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ndg/win32drv/win32drv.c

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/**
* @file win32drv.c
*
*/
/*********************
* INCLUDES
*********************/
#include "win32drv.h"
#if USE_WIN32DRV
#include <windowsx.h>
#include <process.h>
#include <stdbool.h>
#include <stdint.h>
/*********************
* DEFINES
*********************/
#define WINDOW_EX_STYLE \
WS_EX_CLIENTEDGE
#define WINDOW_STYLE \
(WS_OVERLAPPEDWINDOW & ~(WS_SIZEBOX | WS_MAXIMIZEBOX | WS_THICKFRAME))
#ifndef WIN32DRV_MONITOR_ZOOM
#define WIN32DRV_MONITOR_ZOOM 1
#endif
#ifndef USER_DEFAULT_SCREEN_DPI
#define USER_DEFAULT_SCREEN_DPI 96
#endif
/**********************
* TYPEDEFS
**********************/
typedef struct _WINDOW_THREAD_PARAMETER
{
HANDLE window_mutex;
HINSTANCE instance_handle;
HICON icon_handle;
lv_coord_t hor_res;
lv_coord_t ver_res;
int show_window_mode;
} WINDOW_THREAD_PARAMETER, * PWINDOW_THREAD_PARAMETER;
/**********************
* STATIC PROTOTYPES
**********************/
/**
* @brief Creates a B8G8R8A8 frame buffer.
* @param WindowHandle A handle to the window for the creation of the frame
* buffer. If this value is NULL, the entire screen will be
* referenced.
* @param Width The width of the frame buffer.
* @param Height The height of the frame buffer.
* @param PixelBuffer The raw pixel buffer of the frame buffer you created.
* @param PixelBufferSize The size of the frame buffer you created.
* @return If the function succeeds, the return value is a handle to the device
* context (DC) for the frame buffer. If the function fails, the return
* value is NULL, and PixelBuffer parameter is NULL.
*/
static HDC lv_win32_create_frame_buffer(
_In_opt_ HWND WindowHandle,
_In_ LONG Width,
_In_ LONG Height,
_Out_ UINT32** PixelBuffer,
_Out_ SIZE_T* PixelBufferSize);
/**
* @brief Enables WM_DPICHANGED message for child window for the associated
* window.
* @param WindowHandle The window you want to enable WM_DPICHANGED message for
* child window.
* @return If the function succeeds, the return value is non-zero. If the
* function fails, the return value is zero.
* @remarks You need to use this function in Windows 10 Threshold 1 or Windows
* 10 Threshold 2.
*/
static BOOL lv_win32_enable_child_window_dpi_message(
_In_ HWND WindowHandle);
/**
* @brief Registers a window as being touch-capable.
* @param hWnd The handle of the window being registered.
* @param ulFlags A set of bit flags that specify optional modifications.
* @return If the function succeeds, the return value is nonzero. If the
* function fails, the return value is zero.
* @remark For more information, see RegisterTouchWindow.
*/
static BOOL lv_win32_register_touch_window(
HWND hWnd,
ULONG ulFlags);
/**
* @brief Retrieves detailed information about touch inputs associated with a
* particular touch input handle.
* @param hTouchInput The touch input handle received in the LPARAM of a touch
* message.
* @param cInputs The number of structures in the pInputs array.
* @param pInputs A pointer to an array of TOUCHINPUT structures to receive
* information about the touch points associated with the
* specified touch input handle.
* @param cbSize The size, in bytes, of a single TOUCHINPUT structure.
* @return If the function succeeds, the return value is nonzero. If the
* function fails, the return value is zero.
* @remark For more information, see GetTouchInputInfo.
*/
static BOOL lv_win32_get_touch_input_info(
HTOUCHINPUT hTouchInput,
UINT cInputs,
PTOUCHINPUT pInputs,
int cbSize);
/**
* @brief Closes a touch input handle, frees process memory associated with it,
and invalidates the handle.
* @param hTouchInput The touch input handle received in the LPARAM of a touch
* message.
* @return If the function succeeds, the return value is nonzero. If the
* function fails, the return value is zero.
* @remark For more information, see CloseTouchInputHandle.
*/
static BOOL lv_win32_close_touch_input_handle(
HTOUCHINPUT hTouchInput);
/**
* @brief Returns the dots per inch (dpi) value for the associated window.
* @param WindowHandle The window you want to get information about.
* @return The DPI for the window.
*/
static UINT lv_win32_get_dpi_for_window(
_In_ HWND WindowHandle);
static void lv_win32_display_driver_flush_callback(
lv_disp_drv_t* disp_drv,
const lv_area_t* area,
lv_color_t* color_p);
static void lv_win32_display_refresh_handler(
lv_timer_t* param);
static void lv_win32_pointer_driver_read_callback(
lv_indev_drv_t* indev_drv,
lv_indev_data_t* data);
static void lv_win32_keypad_driver_read_callback(
lv_indev_drv_t* indev_drv,
lv_indev_data_t* data);
static void lv_win32_encoder_driver_read_callback(
lv_indev_drv_t* indev_drv,
lv_indev_data_t* data);
static LRESULT CALLBACK lv_win32_window_message_callback(
HWND hWnd,
UINT uMsg,
WPARAM wParam,
LPARAM lParam);
static unsigned int __stdcall lv_win32_window_thread_entrypoint(
void* raw_parameter);
/**********************
* GLOBAL VARIABLES
**********************/
EXTERN_C bool lv_win32_quit_signal = false;
EXTERN_C lv_indev_t* lv_win32_pointer_device_object = NULL;
EXTERN_C lv_indev_t* lv_win32_keypad_device_object = NULL;
EXTERN_C lv_indev_t* lv_win32_encoder_device_object = NULL;
/**********************
* STATIC VARIABLES
**********************/
static HWND g_window_handle = NULL;
static HDC g_buffer_dc_handle = NULL;
static UINT32* g_pixel_buffer = NULL;
static SIZE_T g_pixel_buffer_size = 0;
static lv_disp_t* g_display = NULL;
static bool volatile g_display_refreshing = false;
static bool volatile g_mouse_pressed = false;
static LPARAM volatile g_mouse_value = 0;
static bool volatile g_mousewheel_pressed = false;
static int16_t volatile g_mousewheel_value = 0;
static bool volatile g_keyboard_pressed = false;
static WPARAM volatile g_keyboard_value = 0;
static int volatile g_dpi_value = USER_DEFAULT_SCREEN_DPI;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
EXTERN_C void lv_win32_add_all_input_devices_to_group(
lv_group_t* group)
{
if (!group)
{
LV_LOG_WARN(
"The group object is NULL. Get the default group object instead.");
group = lv_group_get_default();
if (!group)
{
LV_LOG_WARN(
"The default group object is NULL. Create a new group object "
"and set it to default instead.");
group = lv_group_create();
if (group)
{
lv_group_set_default(group);
}
}
}
LV_ASSERT_MSG(group, "Cannot obtain an available group object.");
lv_indev_set_group(lv_win32_pointer_device_object, group);
lv_indev_set_group(lv_win32_keypad_device_object, group);
lv_indev_set_group(lv_win32_encoder_device_object, group);
}
EXTERN_C bool lv_win32_init(
HINSTANCE instance_handle,
int show_window_mode,
lv_coord_t hor_res,
lv_coord_t ver_res,
HICON icon_handle)
{
PWINDOW_THREAD_PARAMETER parameter =
(PWINDOW_THREAD_PARAMETER)malloc(sizeof(WINDOW_THREAD_PARAMETER));
parameter->window_mutex = CreateEventExW(NULL, NULL, 0, EVENT_ALL_ACCESS);
parameter->instance_handle = instance_handle;
parameter->icon_handle = icon_handle;
parameter->hor_res = hor_res;
parameter->ver_res = ver_res;
parameter->show_window_mode = show_window_mode;
_beginthreadex(
NULL,
0,
lv_win32_window_thread_entrypoint,
parameter,
0,
NULL);
WaitForSingleObjectEx(parameter->window_mutex, INFINITE, FALSE);
static lv_disp_draw_buf_t display_buffer;
#if (LV_COLOR_DEPTH == 32) || \
(LV_COLOR_DEPTH == 16 && LV_COLOR_16_SWAP == 0) || \
(LV_COLOR_DEPTH == 8) || \
(LV_COLOR_DEPTH == 1)
lv_disp_draw_buf_init(
&display_buffer,
(lv_color_t*)g_pixel_buffer,
NULL,
hor_res * ver_res);
#else
lv_disp_draw_buf_init(
&display_buffer,
(lv_color_t*)malloc(hor_res * ver_res * sizeof(lv_color_t)),
NULL,
hor_res * ver_res);
#endif
static lv_disp_drv_t display_driver;
lv_disp_drv_init(&display_driver);
display_driver.hor_res = hor_res;
display_driver.ver_res = ver_res;
display_driver.flush_cb = lv_win32_display_driver_flush_callback;
display_driver.draw_buf = &display_buffer;
display_driver.direct_mode = 1;
g_display = lv_disp_drv_register(&display_driver);
lv_timer_del(g_display->refr_timer);
g_display->refr_timer = NULL;
lv_timer_create(lv_win32_display_refresh_handler, 0, NULL);
static lv_indev_drv_t pointer_driver;
lv_indev_drv_init(&pointer_driver);
pointer_driver.type = LV_INDEV_TYPE_POINTER;
pointer_driver.read_cb = lv_win32_pointer_driver_read_callback;
lv_win32_pointer_device_object = lv_indev_drv_register(&pointer_driver);
static lv_indev_drv_t keypad_driver;
lv_indev_drv_init(&keypad_driver);
keypad_driver.type = LV_INDEV_TYPE_KEYPAD;
keypad_driver.read_cb = lv_win32_keypad_driver_read_callback;
lv_win32_keypad_device_object = lv_indev_drv_register(&keypad_driver);
static lv_indev_drv_t encoder_driver;
lv_indev_drv_init(&encoder_driver);
encoder_driver.type = LV_INDEV_TYPE_ENCODER;
encoder_driver.read_cb = lv_win32_encoder_driver_read_callback;
lv_win32_encoder_device_object = lv_indev_drv_register(&encoder_driver);
return true;
}
/**********************
* STATIC FUNCTIONS
**********************/
static HDC lv_win32_create_frame_buffer(
HWND WindowHandle,
LONG Width,
LONG Height,
UINT32** PixelBuffer,
SIZE_T* PixelBufferSize)
{
HDC hFrameBufferDC = NULL;
if (PixelBuffer && PixelBufferSize)
{
HDC hWindowDC = GetDC(WindowHandle);
if (hWindowDC)
{
hFrameBufferDC = CreateCompatibleDC(hWindowDC);
ReleaseDC(WindowHandle, hWindowDC);
}
if (hFrameBufferDC)
{
#if LV_COLOR_DEPTH == 32
BITMAPINFO BitmapInfo = { 0 };
#elif LV_COLOR_DEPTH == 16
typedef struct _BITMAPINFO_16BPP {
BITMAPINFOHEADER bmiHeader;
DWORD bmiColorMask[3];
} BITMAPINFO_16BPP, *PBITMAPINFO_16BPP;
BITMAPINFO_16BPP BitmapInfo = { 0 };
#elif LV_COLOR_DEPTH == 8
typedef struct _BITMAPINFO_8BPP {
BITMAPINFOHEADER bmiHeader;
RGBQUAD bmiColors[256];
} BITMAPINFO_8BPP, *PBITMAPINFO_8BPP;
BITMAPINFO_8BPP BitmapInfo = { 0 };
#elif LV_COLOR_DEPTH == 1
typedef struct _BITMAPINFO_1BPP {
BITMAPINFOHEADER bmiHeader;
RGBQUAD bmiColors[2];
} BITMAPINFO_1BPP, *PBITMAPINFO_1BPP;
BITMAPINFO_1BPP BitmapInfo = { 0 };
#else
BITMAPINFO BitmapInfo = { 0 };
#endif
BitmapInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
BitmapInfo.bmiHeader.biWidth = Width;
BitmapInfo.bmiHeader.biHeight = -Height;
BitmapInfo.bmiHeader.biPlanes = 1;
#if LV_COLOR_DEPTH == 32
BitmapInfo.bmiHeader.biBitCount = 32;
BitmapInfo.bmiHeader.biCompression = BI_RGB;
#elif LV_COLOR_DEPTH == 16
BitmapInfo.bmiHeader.biBitCount = 16;
BitmapInfo.bmiHeader.biCompression = BI_BITFIELDS;
BitmapInfo.bmiColorMask[0] = 0xF800;
BitmapInfo.bmiColorMask[1] = 0x07E0;
BitmapInfo.bmiColorMask[2] = 0x001F;
#elif LV_COLOR_DEPTH == 8
BitmapInfo.bmiHeader.biBitCount = 8;
BitmapInfo.bmiHeader.biCompression = BI_RGB;
for (size_t i = 0; i < 256; ++i)
{
lv_color8_t color;
color.full = i;
BitmapInfo.bmiColors[i].rgbRed = LV_COLOR_GET_R(color) * 36;
BitmapInfo.bmiColors[i].rgbGreen = LV_COLOR_GET_G(color) * 36;
BitmapInfo.bmiColors[i].rgbBlue = LV_COLOR_GET_B(color) * 85;
BitmapInfo.bmiColors[i].rgbReserved = 0xFF;
}
#elif LV_COLOR_DEPTH == 1
BitmapInfo.bmiHeader.biBitCount = 8;
BitmapInfo.bmiHeader.biCompression = BI_RGB;
BitmapInfo.bmiHeader.biClrUsed = 2;
BitmapInfo.bmiHeader.biClrImportant = 2;
BitmapInfo.bmiColors[0].rgbRed = 0x00;
BitmapInfo.bmiColors[0].rgbGreen = 0x00;
BitmapInfo.bmiColors[0].rgbBlue = 0x00;
BitmapInfo.bmiColors[0].rgbReserved = 0xFF;
BitmapInfo.bmiColors[1].rgbRed = 0xFF;
BitmapInfo.bmiColors[1].rgbGreen = 0xFF;
BitmapInfo.bmiColors[1].rgbBlue = 0xFF;
BitmapInfo.bmiColors[1].rgbReserved = 0xFF;
#else
BitmapInfo.bmiHeader.biBitCount = 32;
BitmapInfo.bmiHeader.biCompression = BI_RGB;
#endif
HBITMAP hBitmap = CreateDIBSection(
hFrameBufferDC,
(PBITMAPINFO)(&BitmapInfo),
DIB_RGB_COLORS,
(void**)PixelBuffer,
NULL,
0);
if (hBitmap)
{
#if LV_COLOR_DEPTH == 32
*PixelBufferSize = Width * Height * sizeof(UINT32);
#elif LV_COLOR_DEPTH == 16
*PixelBufferSize = Width * Height * sizeof(UINT16);
#elif LV_COLOR_DEPTH == 8
*PixelBufferSize = Width * Height * sizeof(UINT8);
#elif LV_COLOR_DEPTH == 1
*PixelBufferSize = Width * Height * sizeof(UINT8);
#else
*PixelBufferSize = Width * Height * sizeof(UINT32);
#endif
DeleteObject(SelectObject(hFrameBufferDC, hBitmap));
DeleteObject(hBitmap);
}
else
{
DeleteDC(hFrameBufferDC);
hFrameBufferDC = NULL;
}
}
}
return hFrameBufferDC;
}
static BOOL lv_win32_enable_child_window_dpi_message(
HWND WindowHandle)
{
// This hack is only for Windows 10 TH1/TH2 only.
// We don't need this hack if the Per Monitor Aware V2 is existed.
OSVERSIONINFOEXW OSVersionInfoEx = { 0 };
OSVersionInfoEx.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXW);
OSVersionInfoEx.dwMajorVersion = 10;
OSVersionInfoEx.dwMinorVersion = 0;
OSVersionInfoEx.dwBuildNumber = 14393;
if (!VerifyVersionInfoW(
&OSVersionInfoEx,
VER_MAJORVERSION | VER_MINORVERSION | VER_BUILDNUMBER,
VerSetConditionMask(
VerSetConditionMask(
VerSetConditionMask(
0,
VER_MAJORVERSION,
VER_GREATER_EQUAL),
VER_MINORVERSION,
VER_GREATER_EQUAL),
VER_BUILDNUMBER,
VER_LESS)))
{
return FALSE;
}
HMODULE ModuleHandle = GetModuleHandleW(L"user32.dll");
if (!ModuleHandle)
{
return FALSE;
}
typedef BOOL(WINAPI* FunctionType)(HWND, BOOL);
FunctionType pFunction = (FunctionType)(
GetProcAddress(ModuleHandle, "EnableChildWindowDpiMessage"));
if (!pFunction)
{
return FALSE;
}
return pFunction(WindowHandle, TRUE);
}
static BOOL lv_win32_register_touch_window(
HWND hWnd,
ULONG ulFlags)
{
HMODULE ModuleHandle = GetModuleHandleW(L"user32.dll");
if (!ModuleHandle)
{
return FALSE;
}
typedef BOOL(WINAPI* FunctionType)(HWND, ULONG);
FunctionType pFunction = (FunctionType)(
GetProcAddress(ModuleHandle, "RegisterTouchWindow"));
if (!pFunction)
{
return FALSE;
}
return pFunction(hWnd, ulFlags);
}
static BOOL lv_win32_get_touch_input_info(
HTOUCHINPUT hTouchInput,
UINT cInputs,
PTOUCHINPUT pInputs,
int cbSize)
{
HMODULE ModuleHandle = GetModuleHandleW(L"user32.dll");
if (!ModuleHandle)
{
return FALSE;
}
typedef BOOL(WINAPI* FunctionType)(HTOUCHINPUT, UINT, PTOUCHINPUT, int);
FunctionType pFunction = (FunctionType)(
GetProcAddress(ModuleHandle, "GetTouchInputInfo"));
if (!pFunction)
{
return FALSE;
}
return pFunction(hTouchInput, cInputs, pInputs, cbSize);
}
static BOOL lv_win32_close_touch_input_handle(
HTOUCHINPUT hTouchInput)
{
HMODULE ModuleHandle = GetModuleHandleW(L"user32.dll");
if (!ModuleHandle)
{
return FALSE;
}
typedef BOOL(WINAPI* FunctionType)(HTOUCHINPUT);
FunctionType pFunction = (FunctionType)(
GetProcAddress(ModuleHandle, "CloseTouchInputHandle"));
if (!pFunction)
{
return FALSE;
}
return pFunction(hTouchInput);
}
static UINT lv_win32_get_dpi_for_window(
_In_ HWND WindowHandle)
{
UINT Result = (UINT)(-1);
HMODULE ModuleHandle = LoadLibraryW(L"SHCore.dll");
if (ModuleHandle)
{
typedef enum MONITOR_DPI_TYPE_PRIVATE {
MDT_EFFECTIVE_DPI = 0,
MDT_ANGULAR_DPI = 1,
MDT_RAW_DPI = 2,
MDT_DEFAULT = MDT_EFFECTIVE_DPI
} MONITOR_DPI_TYPE_PRIVATE;
typedef HRESULT(WINAPI* FunctionType)(
HMONITOR, MONITOR_DPI_TYPE_PRIVATE, UINT*, UINT*);
FunctionType pFunction = (FunctionType)(
GetProcAddress(ModuleHandle, "GetDpiForMonitor"));
if (pFunction)
{
HMONITOR MonitorHandle = MonitorFromWindow(
WindowHandle,
MONITOR_DEFAULTTONEAREST);
UINT dpiX = 0;
UINT dpiY = 0;
if (SUCCEEDED(pFunction(
MonitorHandle,
MDT_EFFECTIVE_DPI,
&dpiX,
&dpiY)))
{
Result = dpiX;
}
}
FreeLibrary(ModuleHandle);
}
if (Result == (UINT)(-1))
{
HDC hWindowDC = GetDC(WindowHandle);
if (hWindowDC)
{
Result = GetDeviceCaps(hWindowDC, LOGPIXELSX);
ReleaseDC(WindowHandle, hWindowDC);
}
}
if (Result == (UINT)(-1))
{
Result = USER_DEFAULT_SCREEN_DPI;
}
return Result;
}
static void lv_win32_display_driver_flush_callback(
lv_disp_drv_t* disp_drv,
const lv_area_t* area,
lv_color_t* color_p)
{
if (lv_disp_flush_is_last(disp_drv))
{
#if (LV_COLOR_DEPTH == 32) || \
(LV_COLOR_DEPTH == 16 && LV_COLOR_16_SWAP == 0) || \
(LV_COLOR_DEPTH == 8) || \
(LV_COLOR_DEPTH == 1)
UNREFERENCED_PARAMETER(color_p);
#elif (LV_COLOR_DEPTH == 16 && LV_COLOR_16_SWAP != 0)
SIZE_T count = g_pixel_buffer_size / sizeof(UINT16);
PUINT16 source = (PUINT16)color_p;
PUINT16 destination = (PUINT16)g_pixel_buffer;
for (SIZE_T i = 0; i < count; ++i)
{
UINT16 current = *source;
*destination = (LOBYTE(current) << 8) | HIBYTE(current);
++source;
++destination;
}
#else
for (int y = area->y1; y <= area->y2; ++y)
{
for (int x = area->x1; x <= area->x2; ++x)
{
g_pixel_buffer[y * disp_drv->hor_res + x] =
lv_color_to32(*color_p);
color_p++;
}
}
#endif
InvalidateRect(g_window_handle, NULL, FALSE);
}
lv_disp_flush_ready(disp_drv);
}
static void lv_win32_display_refresh_handler(
lv_timer_t* param)
{
UNREFERENCED_PARAMETER(param);
if (!g_display_refreshing)
{
_lv_disp_refr_timer(NULL);
}
}
static void lv_win32_pointer_driver_read_callback(
lv_indev_drv_t* indev_drv,
lv_indev_data_t* data)
{
UNREFERENCED_PARAMETER(indev_drv);
data->state = (lv_indev_state_t)(
g_mouse_pressed ? LV_INDEV_STATE_PR : LV_INDEV_STATE_REL);
data->point.x = MulDiv(
GET_X_LPARAM(g_mouse_value),
USER_DEFAULT_SCREEN_DPI,
WIN32DRV_MONITOR_ZOOM * g_dpi_value);
data->point.y = MulDiv(
GET_Y_LPARAM(g_mouse_value),
USER_DEFAULT_SCREEN_DPI,
WIN32DRV_MONITOR_ZOOM * g_dpi_value);
if (data->point.x < 0)
{
data->point.x = 0;
}
if (data->point.x > g_display->driver->hor_res - 1)
{
data->point.x = g_display->driver->hor_res - 1;
}
if (data->point.y < 0)
{
data->point.y = 0;
}
if (data->point.y > g_display->driver->ver_res - 1)
{
data->point.y = g_display->driver->ver_res - 1;
}
}
static void lv_win32_keypad_driver_read_callback(
lv_indev_drv_t* indev_drv,
lv_indev_data_t* data)
{
UNREFERENCED_PARAMETER(indev_drv);
data->state = (lv_indev_state_t)(
g_keyboard_pressed ? LV_INDEV_STATE_PR : LV_INDEV_STATE_REL);
WPARAM KeyboardValue = g_keyboard_value;
switch (KeyboardValue)
{
case VK_UP:
data->key = LV_KEY_UP;
break;
case VK_DOWN:
data->key = LV_KEY_DOWN;
break;
case VK_LEFT:
data->key = LV_KEY_LEFT;
break;
case VK_RIGHT:
data->key = LV_KEY_RIGHT;
break;
case VK_ESCAPE:
data->key = LV_KEY_ESC;
break;
case VK_DELETE:
data->key = LV_KEY_DEL;
break;
case VK_BACK:
data->key = LV_KEY_BACKSPACE;
break;
case VK_RETURN:
data->key = LV_KEY_ENTER;
break;
case VK_NEXT:
data->key = LV_KEY_NEXT;
break;
case VK_PRIOR:
data->key = LV_KEY_PREV;
break;
case VK_HOME:
data->key = LV_KEY_HOME;
break;
case VK_END:
data->key = LV_KEY_END;
break;
default:
if (KeyboardValue >= 'A' && KeyboardValue <= 'Z')
{
KeyboardValue += 0x20;
}
data->key = (uint32_t)KeyboardValue;
break;
}
}
static void lv_win32_encoder_driver_read_callback(
lv_indev_drv_t* indev_drv,
lv_indev_data_t* data)
{
UNREFERENCED_PARAMETER(indev_drv);
data->state = (lv_indev_state_t)(
g_mousewheel_pressed ? LV_INDEV_STATE_PR : LV_INDEV_STATE_REL);
data->enc_diff = g_mousewheel_value;
g_mousewheel_value = 0;
}
static LRESULT CALLBACK lv_win32_window_message_callback(
HWND hWnd,
UINT uMsg,
WPARAM wParam,
LPARAM lParam)
{
switch (uMsg)
{
case WM_MOUSEMOVE:
case WM_LBUTTONDOWN:
case WM_LBUTTONUP:
case WM_MBUTTONDOWN:
case WM_MBUTTONUP:
{
g_mouse_value = lParam;
if (uMsg == WM_LBUTTONDOWN || uMsg == WM_LBUTTONUP)
{
g_mouse_pressed = (uMsg == WM_LBUTTONDOWN);
}
else if (uMsg == WM_MBUTTONDOWN || uMsg == WM_MBUTTONUP)
{
g_mousewheel_pressed = (uMsg == WM_MBUTTONDOWN);
}
return 0;
}
case WM_KEYDOWN:
case WM_KEYUP:
{
g_keyboard_pressed = (uMsg == WM_KEYDOWN);
g_keyboard_value = wParam;
break;
}
case WM_MOUSEWHEEL:
{
g_mousewheel_value = -(GET_WHEEL_DELTA_WPARAM(wParam) / WHEEL_DELTA);
break;
}
case WM_TOUCH:
{
UINT cInputs = LOWORD(wParam);
HTOUCHINPUT hTouchInput = (HTOUCHINPUT)(lParam);
PTOUCHINPUT pInputs = malloc(cInputs * sizeof(TOUCHINPUT));
if (pInputs)
{
if (lv_win32_get_touch_input_info(
hTouchInput,
cInputs,
pInputs,
sizeof(TOUCHINPUT)))
{
for (UINT i = 0; i < cInputs; ++i)
{
POINT Point;
Point.x = TOUCH_COORD_TO_PIXEL(pInputs[i].x);
Point.y = TOUCH_COORD_TO_PIXEL(pInputs[i].y);
if (!ScreenToClient(hWnd, &Point))
{
continue;
}
uint16_t x = (uint16_t)(Point.x & 0xffff);
uint16_t y = (uint16_t)(Point.y & 0xffff);
DWORD MousePressedMask =
TOUCHEVENTF_MOVE | TOUCHEVENTF_DOWN;
g_mouse_value = (y << 16) | x;
g_mouse_pressed = (pInputs[i].dwFlags & MousePressedMask);
}
}
free(pInputs);
}
lv_win32_close_touch_input_handle(hTouchInput);
break;
}
case WM_DPICHANGED:
{
g_dpi_value = HIWORD(wParam);
LPRECT SuggestedRect = (LPRECT)lParam;
SetWindowPos(
hWnd,
NULL,
SuggestedRect->left,
SuggestedRect->top,
SuggestedRect->right,
SuggestedRect->bottom,
SWP_NOZORDER | SWP_NOACTIVATE);
RECT ClientRect;
GetClientRect(hWnd, &ClientRect);
int WindowWidth = MulDiv(
g_display->driver->hor_res * WIN32DRV_MONITOR_ZOOM,
g_dpi_value,
USER_DEFAULT_SCREEN_DPI);
int WindowHeight = MulDiv(
g_display->driver->ver_res * WIN32DRV_MONITOR_ZOOM,
g_dpi_value,
USER_DEFAULT_SCREEN_DPI);
SetWindowPos(
hWnd,
NULL,
SuggestedRect->left,
SuggestedRect->top,
SuggestedRect->right + (WindowWidth - ClientRect.right),
SuggestedRect->bottom + (WindowHeight - ClientRect.bottom),
SWP_NOZORDER | SWP_NOACTIVATE);
break;
}
case WM_PAINT:
{
g_display_refreshing = true;
PAINTSTRUCT ps;
HDC hdc = BeginPaint(hWnd, &ps);
if (g_display)
{
SetStretchBltMode(hdc, HALFTONE);
StretchBlt(
hdc,
ps.rcPaint.left,
ps.rcPaint.top,
ps.rcPaint.right - ps.rcPaint.left,
ps.rcPaint.bottom - ps.rcPaint.top,
g_buffer_dc_handle,
0,
0,
MulDiv(
ps.rcPaint.right - ps.rcPaint.left,
USER_DEFAULT_SCREEN_DPI,
WIN32DRV_MONITOR_ZOOM * g_dpi_value),
MulDiv(
ps.rcPaint.bottom - ps.rcPaint.top,
USER_DEFAULT_SCREEN_DPI,
WIN32DRV_MONITOR_ZOOM * g_dpi_value),
SRCCOPY);
}
EndPaint(hWnd, &ps);
g_display_refreshing = false;
break;
}
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProcW(hWnd, uMsg, wParam, lParam);
}
return 0;
}
static unsigned int __stdcall lv_win32_window_thread_entrypoint(
void* raw_parameter)
{
PWINDOW_THREAD_PARAMETER parameter =
(PWINDOW_THREAD_PARAMETER)raw_parameter;
WNDCLASSEXW window_class;
window_class.cbSize = sizeof(WNDCLASSEXW);
window_class.style = 0;
window_class.lpfnWndProc = lv_win32_window_message_callback;
window_class.cbClsExtra = 0;
window_class.cbWndExtra = 0;
window_class.hInstance = parameter->instance_handle;
window_class.hIcon = parameter->icon_handle;
window_class.hCursor = LoadCursorW(NULL, IDC_ARROW);
window_class.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
window_class.lpszMenuName = NULL;
window_class.lpszClassName = L"lv_sim_visual_studio";
window_class.hIconSm = parameter->icon_handle;
if (!RegisterClassExW(&window_class))
{
return 0;
}
HWND window_handle = CreateWindowExW(
WINDOW_EX_STYLE,
window_class.lpszClassName,
L"LVGL Simulator for Windows Desktop",
WINDOW_STYLE,
CW_USEDEFAULT,
0,
CW_USEDEFAULT,
0,
NULL,
NULL,
parameter->instance_handle,
NULL);
if (!window_handle)
{
return 0;
}
g_dpi_value = lv_win32_get_dpi_for_window(window_handle);
RECT window_size;
window_size.left = 0;
window_size.right = MulDiv(
parameter->hor_res * WIN32DRV_MONITOR_ZOOM,
g_dpi_value,
USER_DEFAULT_SCREEN_DPI);
window_size.top = 0;
window_size.bottom = MulDiv(
parameter->ver_res * WIN32DRV_MONITOR_ZOOM,
g_dpi_value,
USER_DEFAULT_SCREEN_DPI);
AdjustWindowRectEx(
&window_size,
WINDOW_STYLE,
FALSE,
WINDOW_EX_STYLE);
OffsetRect(
&window_size,
-window_size.left,
-window_size.top);
SetWindowPos(
window_handle,
NULL,
0,
0,
window_size.right,
window_size.bottom,
SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOMOVE);
lv_win32_register_touch_window(window_handle, 0);
lv_win32_enable_child_window_dpi_message(window_handle);
HDC hNewBufferDC = lv_win32_create_frame_buffer(
window_handle,
parameter->hor_res,
parameter->ver_res,
&g_pixel_buffer,
&g_pixel_buffer_size);
DeleteDC(g_buffer_dc_handle);
g_buffer_dc_handle = hNewBufferDC;
ShowWindow(window_handle, parameter->show_window_mode);
UpdateWindow(window_handle);
g_window_handle = window_handle;
SetEvent(parameter->window_mutex);
MSG message;
while (GetMessageW(&message, NULL, 0, 0))
{
TranslateMessage(&message);
DispatchMessageW(&message);
}
lv_win32_quit_signal = true;
return 0;
}
#endif /*USE_WIN32DRV*/
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