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/**
* @file lv_windows_display.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_windows_display.h"
#if LV_USE_WINDOWS
#include "lv_windows_context.h"
#include <process.h>
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static unsigned int __stdcall lv_windows_display_thread_entrypoint(
void * parameter);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
lv_display_t * lv_windows_create_display(
const wchar_t * title,
int32_t hor_res,
int32_t ver_res,
int32_t zoom_level,
bool allow_dpi_override,
bool simulator_mode)
{
lv_windows_create_display_data_t data;
lv_memzero(&data, sizeof(lv_windows_create_display_data_t));
data.title = title;
data.hor_res = hor_res;
data.ver_res = ver_res;
data.zoom_level = zoom_level;
data.allow_dpi_override = allow_dpi_override;
data.simulator_mode = simulator_mode;
data.mutex = CreateEventExW(NULL, NULL, 0, EVENT_ALL_ACCESS);
data.display = NULL;
if(!data.mutex) {
return NULL;
}
HANDLE thread = (HANDLE)_beginthreadex(
NULL,
0,
lv_windows_display_thread_entrypoint,
&data,
0,
NULL);
LV_ASSERT(thread);
WaitForSingleObjectEx(data.mutex, INFINITE, FALSE);
if(thread) {
CloseHandle(thread);
}
if(data.mutex) {
CloseHandle(data.mutex);
}
return data.display;
}
HWND lv_windows_get_display_window_handle(lv_display_t * display)
{
return (HWND)lv_display_get_driver_data(display);
}
int32_t lv_windows_zoom_to_logical(int32_t physical, int32_t zoom_level)
{
return MulDiv(physical, LV_WINDOWS_ZOOM_BASE_LEVEL, zoom_level);
}
int32_t lv_windows_zoom_to_physical(int32_t logical, int32_t zoom_level)
{
return MulDiv(logical, zoom_level, LV_WINDOWS_ZOOM_BASE_LEVEL);
}
int32_t lv_windows_dpi_to_logical(int32_t physical, int32_t dpi)
{
return MulDiv(physical, USER_DEFAULT_SCREEN_DPI, dpi);
}
int32_t lv_windows_dpi_to_physical(int32_t logical, int32_t dpi)
{
return MulDiv(logical, dpi, USER_DEFAULT_SCREEN_DPI);
}
/**********************
* STATIC FUNCTIONS
**********************/
static unsigned int __stdcall lv_windows_display_thread_entrypoint(
void * parameter)
{
lv_windows_create_display_data_t * data = parameter;
LV_ASSERT_NULL(data);
DWORD window_style = WS_OVERLAPPEDWINDOW;
if(data->simulator_mode) {
window_style &= ~(WS_SIZEBOX | WS_MAXIMIZEBOX | WS_THICKFRAME);
}
HWND window_handle = CreateWindowExW(
WS_EX_CLIENTEDGE,
L"LVGL.Window",
data->title,
window_style,
CW_USEDEFAULT,
0,
data->hor_res,
data->ver_res,
NULL,
NULL,
NULL,
data);
if(!window_handle) {
return 0;
}
lv_windows_window_context_t * context = lv_windows_get_window_context(
window_handle);
if(!context) {
return 0;
}
data->display = context->display_device_object;
ShowWindow(window_handle, SW_SHOW);
UpdateWindow(window_handle);
LV_ASSERT(SetEvent(data->mutex));
data = NULL;
MSG message;
while(GetMessageW(&message, NULL, 0, 0)) {
TranslateMessage(&message);
DispatchMessageW(&message);
}
return 0;
}
#endif // LV_USE_WINDOWS
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