[PATCH 2/2] gdi32: Create a bitmap of the size of the virtual screen for display DCs.
Fix a bug that WeChat screenshot is black when there is only one monitor. Signed-off-by: Zhiyi Zhang <zzhang(a)codeweavers.com> --- dlls/gdi32/dc.c | 11 ++++++- dlls/gdi32/driver.c | 2 +- dlls/gdi32/gdi_private.h | 5 +++ dlls/gdi32/gdiobj.c | 61 +++++++++++++++++++++++++++++++++++-- dlls/user32/tests/monitor.c | 3 -- 5 files changed, 74 insertions(+), 8 deletions(-) diff --git a/dlls/gdi32/dc.c b/dlls/gdi32/dc.c index 830fabf6e78..16aea2933aa 100644 --- a/dlls/gdi32/dc.c +++ b/dlls/gdi32/dc.c @@ -649,7 +649,16 @@ HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output, if (!(dc = alloc_dc_ptr( OBJ_DC ))) return 0; hdc = dc->hSelf; - dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP )); + if (!lstrcmpiW( driver, L"DISPLAY" ) || is_display_device( driver ) || is_display_device( device )) + { + dc->display_dc = 1; + dc->hBitmap = GDI_inc_ref_count( GetStockObject( DISPLAY_BITMAP )); + } + else + { + dc->display_dc = 0; + dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP )); + } TRACE("(driver=%s, device=%s, output=%s): returning %p\n", debugstr_w(driver), debugstr_w(device), debugstr_w(output), dc->hSelf ); diff --git a/dlls/gdi32/driver.c b/dlls/gdi32/driver.c index e146a3a4f85..d59061066a3 100644 --- a/dlls/gdi32/driver.c +++ b/dlls/gdi32/driver.c @@ -85,7 +85,7 @@ static BOOL (WINAPI *pEnumDisplayMonitors)(HDC, LPRECT, MONITORENUMPROC, LPARAM) static BOOL (WINAPI *pEnumDisplaySettingsW)(LPCWSTR, DWORD, LPDEVMODEW); static HWND (WINAPI *pGetDesktopWindow)(void); static BOOL (WINAPI *pGetMonitorInfoW)(HMONITOR, LPMONITORINFO); -static INT (WINAPI *pGetSystemMetrics)(INT); +INT (WINAPI *pGetSystemMetrics)(INT) = NULL; static DPI_AWARENESS_CONTEXT (WINAPI *pSetThreadDpiAwarenessContext)(DPI_AWARENESS_CONTEXT); /********************************************************************** diff --git a/dlls/gdi32/gdi_private.h b/dlls/gdi32/gdi_private.h index 2bf16e8eaf8..13865f37ecc 100644 --- a/dlls/gdi32/gdi_private.h +++ b/dlls/gdi32/gdi_private.h @@ -47,6 +47,8 @@ typedef struct { /* extra stock object: default 1x1 bitmap for memory DCs */ #define DEFAULT_BITMAP (STOCK_LAST+1) +/* extra stock object: the bitmap for display DCs */ +#define DISPLAY_BITMAP (STOCK_LAST+2) struct gdi_obj_funcs { @@ -72,6 +74,7 @@ typedef struct tagDC DCHOOKPROC hookProc; /* DC hook */ BOOL bounds_enabled:1; /* bounds tracking is enabled */ BOOL path_open:1; /* path is currently open (only for saved DCs) */ + BOOL display_dc:1; /* Whether this DC is a display DC */ POINT wnd_org; /* Window origin */ SIZE wnd_ext; /* Window extent */ @@ -761,4 +764,6 @@ extern void CDECL free_heap_bits( struct gdi_image_bits *bits ) DECLSPEC_HIDDEN; extern HMODULE gdi32_module DECLSPEC_HIDDEN; +extern INT (WINAPI *pGetSystemMetrics)( INT ) DECLSPEC_HIDDEN; + #endif /* __WINE_GDI_PRIVATE_H */ diff --git a/dlls/gdi32/gdiobj.c b/dlls/gdi32/gdiobj.c index 2309fdac582..bda1cf387be 100644 --- a/dlls/gdi32/gdiobj.c +++ b/dlls/gdi32/gdiobj.c @@ -26,6 +26,7 @@ #include "windef.h" #include "winbase.h" #include "wingdi.h" +#include "winuser.h" #include "winreg.h" #include "winnls.h" #include "winerror.h" @@ -101,12 +102,13 @@ static const LOGPEN NullPen = { PS_NULL, { 0, 0 }, 0 }; static const LOGBRUSH DCBrush = { BS_SOLID, RGB(255,255,255), 0 }; static const LOGPEN DCPen = { PS_SOLID, { 0, 0 }, RGB(0,0,0) }; -/* reserve one extra entry for the stock default bitmap */ +/* reserve extra entries for the stock default bitmap and a bitmap for display DCs */ /* this is what Windows does too */ -#define NB_STOCK_OBJECTS (STOCK_LAST+2) +#define NB_STOCK_OBJECTS (STOCK_LAST+3) static HGDIOBJ stock_objects[NB_STOCK_OBJECTS]; static HGDIOBJ scaled_stock_objects[NB_STOCK_OBJECTS]; +static SIZE display_bitmap_size = { 1, 1 }; static CRITICAL_SECTION gdi_section; static CRITICAL_SECTION_DEBUG critsect_debug = @@ -642,6 +644,7 @@ BOOL WINAPI DllMain( HINSTANCE inst, DWORD reason, LPVOID reserved ) stock_objects[DEFAULT_PALETTE] = PALETTE_Init(); stock_objects[DEFAULT_BITMAP] = CreateBitmap( 1, 1, 1, 1, NULL ); + stock_objects[DISPLAY_BITMAP] = CreateBitmap( 1, 1, 1, 1, NULL ); /* language-independent stock fonts */ stock_objects[OEM_FIXED_FONT] = CreateFontIndirectW( &OEMFixedFont ); @@ -1007,6 +1010,9 @@ void GDI_hdc_not_using_object(HGDIOBJ obj, HDC hdc) */ HGDIOBJ WINAPI GetStockObject( INT obj ) { + HBITMAP bitmap; + SIZE size; + if ((obj < 0) || (obj >= NB_STOCK_OBJECTS)) return 0; switch (obj) { @@ -1016,6 +1022,32 @@ HGDIOBJ WINAPI GetStockObject( INT obj ) case DEFAULT_GUI_FONT: if (get_system_dpi() != 96) return scaled_stock_objects[obj]; break; + case DISPLAY_BITMAP: + { + EnterCriticalSection( &gdi_section ); + + if (pGetSystemMetrics) + { + size.cx = pGetSystemMetrics( SM_CXVIRTUALSCREEN ); + size.cy = pGetSystemMetrics( SM_CYVIRTUALSCREEN ); + if (size.cx != display_bitmap_size.cx || size.cy != display_bitmap_size.cy) + { + if ((bitmap = CreateBitmap( size.cx, size.cy, 1, 32, NULL ))) + { + __wine_make_gdi_object_system( stock_objects[DISPLAY_BITMAP], FALSE ); + if (!GDI_get_ref_count( stock_objects[DISPLAY_BITMAP] )) + DeleteObject( stock_objects[DISPLAY_BITMAP] ); + stock_objects[DISPLAY_BITMAP] = bitmap; + display_bitmap_size = size; + __wine_make_gdi_object_system( stock_objects[DISPLAY_BITMAP], TRUE ); + } + } + } + + bitmap = stock_objects[DISPLAY_BITMAP]; + LeaveCriticalSection( &gdi_section ); + return bitmap; + } } return stock_objects[obj]; } @@ -1125,6 +1157,7 @@ HGDIOBJ WINAPI GetCurrentObject(HDC hdc,UINT type) { HGDIOBJ ret = 0; DC * dc = get_dc_ptr( hdc ); + HBITMAP display_bitmap; if (!dc) return 0; @@ -1134,7 +1167,29 @@ HGDIOBJ WINAPI GetCurrentObject(HDC hdc,UINT type) case OBJ_BRUSH: ret = dc->hBrush; break; case OBJ_PAL: ret = dc->hPalette; break; case OBJ_FONT: ret = dc->hFont; break; - case OBJ_BITMAP: ret = dc->hBitmap; break; + case OBJ_BITMAP: + { + if (dc->display_dc) + { + EnterCriticalSection( &gdi_section ); + + display_bitmap = GetStockObject( DISPLAY_BITMAP ); + if (dc->hBitmap != display_bitmap) + { + GDI_dec_ref_count( dc->hBitmap ); + dc->hBitmap = GDI_inc_ref_count( display_bitmap ); + } + + ret = dc->hBitmap; + LeaveCriticalSection( &gdi_section ); + } + else + { + ret = dc->hBitmap; + } + + break; + } /* tests show that OBJ_REGION is explicitly ignored */ case OBJ_REGION: break; diff --git a/dlls/user32/tests/monitor.c b/dlls/user32/tests/monitor.c index 926b288da11..adea730f65f 100644 --- a/dlls/user32/tests/monitor.c +++ b/dlls/user32/tests/monitor.c @@ -2039,13 +2039,10 @@ static void _check_display_dc(INT line, HDC hdc, const DEVMODEA *dm, BOOL allow_ if (ret) { ok_(__FILE__, line)(bitmap.bmType == 0, "Expected bmType %d, got %d.\n", 0, bitmap.bmType); - todo_wine ok_(__FILE__, line)(bitmap.bmWidth == GetSystemMetrics(SM_CXVIRTUALSCREEN), "Expected bmWidth %d, got %d.\n", GetSystemMetrics(SM_CXVIRTUALSCREEN), bitmap.bmWidth); - todo_wine ok_(__FILE__, line)(bitmap.bmHeight == GetSystemMetrics(SM_CYVIRTUALSCREEN), "Expected bmHeight %d, got %d.\n", GetSystemMetrics(SM_CYVIRTUALSCREEN), bitmap.bmHeight); - todo_wine ok_(__FILE__, line)(bitmap.bmBitsPixel == GetDeviceCaps(hdc, BITSPIXEL), "Expected bmBitsPixel %d, got %d.\n", GetDeviceCaps(hdc, BITSPIXEL), bitmap.bmBitsPixel); ok_(__FILE__, line)(bitmap.bmWidthBytes == get_bitmap_stride(bitmap.bmWidth, bitmap.bmBitsPixel), -- 2.27.0
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Zhiyi Zhang