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uxtheme: Support images in GetThemeBackgroundRegion.

This commit is contained in:
Mark Harmstone 2015-03-15 16:59:37 +00:00 committed by Alexandre Julliard
parent cd5a76b182
commit 8fa8a23684
1 changed files with 115 additions and 2 deletions
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117
dlls/uxtheme/draw.c
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@ -1734,6 +1734,120 @@ HRESULT WINAPI GetThemeBackgroundExtent(HTHEME hTheme, HDC hdc, int iPartId,
return S_OK;
}
static inline void flush_rgn_data( HRGN rgn, RGNDATA *data )
{
HRGN tmp = ExtCreateRegion( NULL, data->rdh.dwSize + data->rdh.nRgnSize, data );
CombineRgn( rgn, rgn, tmp, RGN_OR );
DeleteObject( tmp );
data->rdh.nCount = 0;
}
static inline void add_row( HRGN rgn, RGNDATA *data, int x, int y, int len )
{
RECT *rect = (RECT *)data->Buffer + data->rdh.nCount;
if (len <= 0) return;
rect->left = x;
rect->top = y;
rect->right = x + len;
rect->bottom = y + 1;
data->rdh.nCount++;
if (data->rdh.nCount * sizeof(RECT) > data->rdh.nRgnSize - sizeof(RECT))
flush_rgn_data( rgn, data );
}
static HRESULT create_image_bg_region(HTHEME theme, int part, int state, const RECT *rect, HRGN *rgn)
{
RECT r;
HDC dc;
HBITMAP bmp;
HRGN hrgn;
BOOL istrans;
COLORREF transcolour;
HBRUSH transbrush;
unsigned int x, y, start;
BITMAPINFO bitmapinfo;
DWORD *bits;
char buffer[4096];
RGNDATA *data = (RGNDATA *)buffer;
if (FAILED(GetThemeBool(theme, part, state, TMT_TRANSPARENT, &istrans)) || !istrans) {
*rgn = CreateRectRgn(rect->left, rect->top, rect->right, rect->bottom);
return S_OK;
}
r = *rect;
OffsetRect(&r, -r.left, -r.top);
if (FAILED(GetThemeColor(theme, part, state, TMT_TRANSPARENTCOLOR, &transcolour)))
transcolour = RGB(255, 0, 255); /* defaults to magenta */
dc = CreateCompatibleDC(NULL);
if (!dc) {
WARN("CreateCompatibleDC failed\n");
return E_FAIL;
}
bitmapinfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bitmapinfo.bmiHeader.biWidth = rect->right - rect->left;
bitmapinfo.bmiHeader.biHeight = -(rect->bottom - rect->top);
bitmapinfo.bmiHeader.biPlanes = 1;
bitmapinfo.bmiHeader.biBitCount = 32;
bitmapinfo.bmiHeader.biCompression = BI_RGB;
bitmapinfo.bmiHeader.biSizeImage = bitmapinfo.bmiHeader.biWidth * bitmapinfo.bmiHeader.biHeight * 4;
bitmapinfo.bmiHeader.biXPelsPerMeter = 0;
bitmapinfo.bmiHeader.biYPelsPerMeter = 0;
bitmapinfo.bmiHeader.biClrUsed = 0;
bitmapinfo.bmiHeader.biClrImportant = 0;
bmp = CreateDIBSection(dc, &bitmapinfo, DIB_RGB_COLORS, (void**)&bits, NULL, 0);
if (!bmp) {
WARN("CreateDIBSection failed\n");
DeleteDC(dc);
return E_FAIL;
}
SelectObject(dc, bmp);
transbrush = CreateSolidBrush(transcolour);
FillRect(dc, &r, transbrush);
DeleteObject(transbrush);
if (FAILED(DrawThemeBackground(theme, dc, part, state, &r, NULL))) {
WARN("DrawThemeBackground failed\n");
DeleteObject(bmp);
DeleteDC(dc);
return E_FAIL;
}
data->rdh.dwSize = sizeof(data->rdh);
data->rdh.iType = RDH_RECTANGLES;
data->rdh.nCount = 0;
data->rdh.nRgnSize = sizeof(buffer) - sizeof(data->rdh);
hrgn = CreateRectRgn(0, 0, 0, 0);
for (y = 0; y < r.bottom; y++, bits += r.right) {
x = 0;
while (x < r.right) {
while (x < r.right && (bits[x] & 0xffffff) == transcolour) x++;
start = x;
while (x < r.right && !((bits[x] & 0xffffff) == transcolour)) x++;
add_row( hrgn, data, rect->left + start, rect->top + y, x - start );
}
}
if (data->rdh.nCount > 0) flush_rgn_data(hrgn, data);
*rgn = hrgn;
DeleteObject(bmp);
DeleteDC(dc);
return S_OK;
}
/***********************************************************************
* GetThemeBackgroundRegion (UXTHEME.@)
*
@ -1755,8 +1869,7 @@ HRESULT WINAPI GetThemeBackgroundRegion(HTHEME hTheme, HDC hdc, int iPartId,
GetThemeEnumValue(hTheme, iPartId, iStateId, TMT_BGTYPE, &bgtype);
if(bgtype == BT_IMAGEFILE) {
FIXME("Images not handled yet\n");
hr = ERROR_CALL_NOT_IMPLEMENTED;
hr = create_image_bg_region(hTheme, iPartId, iStateId, pRect, pRegion);
}
else if(bgtype == BT_BORDERFILL) {
*pRegion = CreateRectRgn(pRect->left, pRect->top, pRect->right, pRect->bottom);