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added TRANSPARENT flag for BITMAP fields

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git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@3881 212acab6-be3b-0410-9dea-997c60f758d6
This commit is contained in:
kichik 2005-01-21 19:12:47 +00:00
parent 785e54440f
commit 31542c6ea4
3 changed files with 75 additions and 0 deletions
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68
Contrib/InstallOptions/InstallerOptions.cpp
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@ -101,6 +101,7 @@ char *WINAPI STRDUP(const char *c)
// LBS_MULTIPLESEL 0x00000008 // LISTBOX
#define FLAG_READONLY 0x00000010 // TEXT/FILEREQUEST/DIRREQUEST
// BS_LEFTTEXT 0x00000020 // CHECKBOX/RADIOBUTTON
#define TRANSPARENT_BMP 0x00000020 // BITMAP
#define FLAG_PASSWORD 0x00000040 // TEXT/FILEREQUEST/DIRREQUEST
#define FLAG_ONLYNUMBERS 0x00000080 // TEXT/FILEREQUEST/DIRREQUEST
#define FLAG_MULTILINE 0x00000100 // TEXT/FILEREQUEST/DIRREQUEST
@ -476,6 +477,7 @@ int WINAPI ReadSettings(void) {
{ "HSCROLL", WS_HSCROLL },
{ "VSCROLL", WS_VSCROLL },
{ "DISABLED", WS_DISABLED },
{ "TRANSPARENT", TRANSPARENT_BMP },
{ NULL, 0 }
};
FieldType *pField = pFields + nIdx;
@ -1191,6 +1193,7 @@ int WINAPI createCfgDlg()
{
WPARAM nImageType = pField->nType == FIELD_BITMAP ? IMAGE_BITMAP : IMAGE_ICON;
LPARAM nImage = 0;
if (pField->pszText) {
pField->hImage = LoadImage(
m_hInstance,
@ -1208,12 +1211,76 @@ int WINAPI createCfgDlg()
}
else
nImage = (LPARAM)LoadIcon(GetModuleHandle(0), MAKEINTRESOURCE(103));
if ((pField->nFlags & TRANSPARENT_BMP) && nImageType == IMAGE_BITMAP)
{
// based on AdvSplash's SetTransparentRegion
BITMAP bm;
HBITMAP hBitmap = (HBITMAP) nImage;
if (GetObject(hBitmap, sizeof(bm), &bm))
{
HDC dc;
int x, y;
HRGN region, cutrgn;
BITMAPINFO bmi;
int size = bm.bmWidth * bm.bmHeight * sizeof(int);
int *bmp = (int *) MALLOC(size);
if (bmp)
{
bmi.bmiHeader.biBitCount = 32;
bmi.bmiHeader.biCompression = BI_RGB;
bmi.bmiHeader.biHeight = bm.bmHeight;
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmi.bmiHeader.biWidth = bm.bmWidth;
bmi.bmiHeader.biClrUsed = 0;
bmi.bmiHeader.biClrImportant = 0;
dc = CreateCompatibleDC(NULL);
SelectObject(dc, hBitmap);
x = GetDIBits(dc, hBitmap, 0, bm.bmHeight, bmp, &bmi, DIB_RGB_COLORS);
region = CreateRectRgn(0, 0, bm.bmWidth, bm.bmHeight);
int keycolor = *bmp & 0xFFFFFF;
// Search for transparent pixels
for (y = bm.bmHeight - 1; y >= 0; y--) {
for (x = 0; x < bm.bmWidth;) {
if ((*bmp & 0xFFFFFF) == keycolor) {
int j = x;
while ((x < bm.bmWidth) && ((*bmp & 0xFFFFFF) == keycolor)) {
bmp++, x++;
}
// Cut transparent pixels from the original region
cutrgn = CreateRectRgn(j, y, x, y + 1);
CombineRgn(region, region, cutrgn, RGN_XOR);
DeleteObject(cutrgn);
} else {
bmp++, x++;
}
}
}
// Set resulting region.
SetWindowRgn(hwCtrl, region, TRUE);
DeleteObject(region);
DeleteObject(dc);
FREE(bmp);
}
}
}
mySendMessage(
hwCtrl,
STM_SETIMAGE,
nImageType,
nImage
);
if (pField->nType == FIELD_BITMAP)
{
// Centre the image in the requested space.
@ -1226,6 +1293,7 @@ int WINAPI createCfgDlg()
SetWindowPos(hwCtrl, NULL, bmp_rect.left, bmp_rect.top, 0, 0,
SWP_NOACTIVATE | SWP_NOSIZE | SWP_NOZORDER);
}
break;
}