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Added support for 16-bit visuals.

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kmcclusk%netscape.com 1998-09-01 20:30:42 +00:00
parent acd663d376
commit 7fd790749f
2 changed files with 85 additions and 8 deletions
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84
gfx/src/motif/nsDeviceContextUnix.cpp
View File

@ -240,6 +240,7 @@ PRUint32 nsDeviceContextUnix :: ConvertPixel(nscolor aColor)
return (newcolor);
}
void nsDeviceContextUnix :: InstallColormap()
{
@ -252,6 +253,28 @@ void nsDeviceContextUnix :: InstallColormap()
number of visuals may be the one associated with this device context.
*/
if (mSurface) {
InstallColormap((Display*)mSurface->display, (Drawable)mSurface->drawable);
}
else {
// No surface so we have to create a window just to get a drawable so we
// can install the colormap.
Window w;
Display * d = XtDisplay(mWidget);
w = ::XCreateSimpleWindow(d,
RootWindow(d, DefaultScreen(d)),
0, 0, 1, 1, 0,
BlackPixel(d, DefaultScreen(d)),
WhitePixel(d, DefaultScreen(d)));
InstallColormap(d, w);
::XDestroyWindow(d, w);
}
}
void nsDeviceContextUnix :: InstallColormap(Display* aDisplay, Drawable aDrawable)
{
XWindowAttributes wa;
@ -260,8 +283,8 @@ void nsDeviceContextUnix :: InstallColormap()
return;
// Find the depth of this visual
::XGetWindowAttributes(mSurface->display,
mSurface->drawable,
::XGetWindowAttributes(aDisplay,
aDrawable,
&wa);
mDepth = wa.depth;
@ -383,6 +406,63 @@ NS_IMETHODIMP nsDeviceContextUnix :: CheckFontExistence(const nsString& aFontNam
}
NS_IMETHODIMP nsDeviceContextUnix::GetPaletteInfo(nsPaletteInfo& aPaletteInfo)
{
aPaletteInfo.isPaletteDevice = PR_FALSE;
aPaletteInfo.sizePalette = 0;
aPaletteInfo.numReserved = 0;
aPaletteInfo.palette = nsnull;
return NS_OK;
}
NS_IMETHODIMP nsDeviceContextUnix::GetILColorSpace(IL_ColorSpace*& aColorSpace)
{
InstallColormap();
if (nsnull == mColorSpace) {
if (16 == mDepth) {
IL_RGBBits colorRGBBits;
// Default is to create a 16-bit color space
colorRGBBits.red_shift = mRedOffset;
colorRGBBits.red_bits = mRedBits;
colorRGBBits.green_shift = mGreenOffset;
colorRGBBits.green_bits = mGreenBits;
colorRGBBits.blue_shift = mBlueOffset;
colorRGBBits.blue_bits = mBlueBits;
mColorSpace = IL_CreateTrueColorSpace(&colorRGBBits, 16);
}
else if (24 == mDepth) {
DeviceContextImpl::GetILColorSpace(aColorSpace);
return NS_OK;
}
else {
printf("\n\n\n\n Unknown depth %d\n",mDepth);
IL_RGBBits colorRGBBits;
// Default is to create a 16-bit color space
colorRGBBits.red_shift = mRedOffset;
colorRGBBits.red_bits = mRedBits;
colorRGBBits.green_shift = mGreenOffset;
colorRGBBits.green_bits = mGreenBits;
colorRGBBits.blue_shift = mBlueOffset;
colorRGBBits.blue_bits = mBlueBits;
mColorSpace = IL_CreateTrueColorSpace(&colorRGBBits, 16);
}
if (nsnull == mColorSpace) {
aColorSpace = nsnull;
return NS_ERROR_OUT_OF_MEMORY;
}
}
NS_POSTCONDITION(nsnull != mColorSpace, "null color space");
aColorSpace = mColorSpace;
IL_AddRefToColorSpace(aColorSpace);
return NS_OK;
}

9
gfx/src/motif/nsDeviceContextUnix.h
View File

@ -61,14 +61,10 @@ public:
//already one in the device context. the drawing surface is then cached
//in the device context for re-use.
// NS_IMETHOD CheckFontExistence(const char * aFontName);
// NS_IMETHOD CreateILColorSpace(IL_ColorSpace*& aColorSpace);
NS_IMETHOD GetILColorSpace(IL_ColorSpace*& aColorSpace);
NS_IMETHOD GetPaletteInfo(nsPaletteInfo&);
NS_IMETHOD Init(nsNativeWidget aNativeWidget);
NS_IMETHOD GetScrollBarDimensions(float &aWidth, float &aHeight) const;
NS_IMETHOD GetDrawingSurface(nsIRenderingContext &aContext, nsDrawingSurface &aSurface);
virtual PRUint32 ConvertPixel(nscolor aColor);
@ -90,6 +86,7 @@ protected:
public:
void InstallColormap(void);
void InstallColormap(Display* aDisplay, Drawable aDrawable);
void SetDrawingSurface(nsDrawingSurfaceUnix * aSurface) { mSurface = aSurface; }
nsDrawingSurface GetDrawingSurface();