diff options
| -rwxr-xr-x | bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Image.java | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Image.java b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Image.java index dfbdef7cb6..71e1fdc46c 100755 --- a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Image.java +++ b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Image.java @@ -1354,6 +1354,18 @@ void init(Device device, int width, int height) { type = SWT.BITMAP; int hDC = device.internal_new_GC(null); handle = OS.CreateCompatibleBitmap(hDC, width, height); + /* + * Feature in Windows. CreateCompatibleBitmap() may fail + * for large images. The fix is to create a DIB section + * in that case. + */ + if (handle == 0) { + int bits = OS.GetDeviceCaps(hDC, OS.BITSPIXEL); + int planes = OS.GetDeviceCaps(hDC, OS.PLANES); + int depth = bits * planes; + if (depth < 16) depth = 16; + handle = createDIB(width, height, depth); + } if (handle != 0) { int memDC = OS.CreateCompatibleDC(hDC); int hOldBitmap = OS.SelectObject(memDC, handle); @@ -1367,6 +1379,42 @@ void init(Device device, int width, int height) { } } +static int createDIB(int width, int height, int depth) { + BITMAPINFOHEADER bmiHeader = new BITMAPINFOHEADER(); + bmiHeader.biSize = BITMAPINFOHEADER.sizeof; + bmiHeader.biWidth = width; + bmiHeader.biHeight = -height; + bmiHeader.biPlanes = 1; + bmiHeader.biBitCount = (short)depth; + if (OS.IsWinCE) bmiHeader.biCompression = OS.BI_BITFIELDS; + else bmiHeader.biCompression = OS.BI_RGB; + byte[] bmi = new byte[BITMAPINFOHEADER.sizeof + (OS.IsWinCE ? 12 : 0)]; + OS.MoveMemory(bmi, bmiHeader, BITMAPINFOHEADER.sizeof); + /* Set the rgb colors into the bitmap info */ + if (OS.IsWinCE) { + int redMask = 0xFF00; + int greenMask = 0xFF0000; + int blueMask = 0xFF000000; + /* big endian */ + int offset = BITMAPINFOHEADER.sizeof; + bmi[offset] = (byte)((redMask & 0xFF000000) >> 24); + bmi[offset + 1] = (byte)((redMask & 0xFF0000) >> 16); + bmi[offset + 2] = (byte)((redMask & 0xFF00) >> 8); + bmi[offset + 3] = (byte)((redMask & 0xFF) >> 0); + bmi[offset + 4] = (byte)((greenMask & 0xFF000000) >> 24); + bmi[offset + 5] = (byte)((greenMask & 0xFF0000) >> 16); + bmi[offset + 6] = (byte)((greenMask & 0xFF00) >> 8); + bmi[offset + 7] = (byte)((greenMask & 0xFF) >> 0); + bmi[offset + 8] = (byte)((blueMask & 0xFF000000) >> 24); + bmi[offset + 9] = (byte)((blueMask & 0xFF0000) >> 16); + bmi[offset + 10] = (byte)((blueMask & 0xFF00) >> 8); + bmi[offset + 11] = (byte)((blueMask & 0xFF) >> 0); + } + + int[] pBits = new int[1]; + return OS.CreateDIBSection(0, bmi, OS.DIB_RGB_COLORS, pBits, 0, 0); +} + /** * Feature in WinCE. GetIconInfo is not available in WinCE. * The workaround is to cache the object ImageData for images |