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Some cleanup to make it easier to read.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12064 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Michael Lotz
2005-03-27 03:33:23 +00:00
parent ac13e18b22
commit a2a622616f
1 changed files with 74 additions and 95 deletions
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src/servers/app/drawing/DisplayDriverImpl.cpp
+74 -95
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@@ -2591,124 +2591,103 @@ void DisplayDriverImpl::BlitMono2RGB32(FT_Bitmap *src, const BPoint &pt, const D
ReleaseBuffer();
}
void DisplayDriverImpl::BlitGray2RGB32(FT_Bitmap *src, const BPoint &pt, const DrawData *d)
void
DisplayDriverImpl::BlitGray2RGB32(FT_Bitmap *src, const BPoint &pt, const DrawData *d)
{
// pointers to the top left corner of the area to be copied in each bitmap
uint8 *srcbuffer=NULL, *destbuffer=NULL;
FBBitmap framebuffer;
if(!AcquireBuffer(&framebuffer))
{
if(!AcquireBuffer(&framebuffer)) {
printf("Couldn't acquire framebuffer in DisplayDriverImpl::BlitGray2RGB32\n");
return;
}
// index pointers which are incremented during the course of the blit
uint8 *srcindex=NULL, *destindex=NULL, *rowptr=NULL;
rgb_color highcolor = d->highcolor.GetColor32();
rgb_color lowcolor = d->lowcolor.GetColor32();
rgb_color highcolor=d->highcolor.GetColor32(), lowcolor=d->lowcolor.GetColor32(); float rstep,gstep,bstep,astep;
rstep=float(highcolor.red-lowcolor.red)/255.0;
gstep=float(highcolor.green-lowcolor.green)/255.0;
bstep=float(highcolor.blue-lowcolor.blue)/255.0;
astep=float(highcolor.alpha-lowcolor.alpha)/255.0;
float rstep, gstep, bstep, astep;
rstep = float(highcolor.red - lowcolor.red) / 255.0;
gstep = float(highcolor.green - lowcolor.green) / 255.0;
bstep = float(highcolor.blue - lowcolor.blue) / 255.0;
astep = float(highcolor.alpha - lowcolor.alpha) / 255.0;
// increment values for the index pointers
int32 x=(int32)pt.x,
y=(int32)pt.y,
srcinc=src->pitch,
// destinc=dest->BytesPerRow(),
destinc=framebuffer.BytesPerRow(),
srcwidth=src->width,
srcheight=src->rows,
incval=0;
int32 x = (int32)pt.x;
int32 y = (int32)pt.y;
int32 srcinc = src->pitch;
int32 destinc = framebuffer.BytesPerRow();
int32 srcwidth = src->width;
int32 srcheight = src->rows;
int32 incval=0;
int16 i,j;
// pointers to the top left corner of the area to be copied in each bitmap
uint8 *srcbuffer = (uint8 *)src->buffer;
uint8 *destbuffer= (uint8 *)framebuffer.Bits() + (y * framebuffer.BytesPerRow() + (x * 4));
// starting point in source bitmap
srcbuffer=(uint8*)src->buffer;
// starting point in destination bitmap
destbuffer=(uint8*)framebuffer.Bits()+(y*framebuffer.BytesPerRow()+(x*4));
if(y<0)
{
if(y<pt.y)
if (y < 0) {
if (y < pt.y)
y++;
incval=0-y;
incval = 0 - y;
srcbuffer+=incval * srcinc;
srcheight-=incval;
destbuffer+=incval * destinc;
}
if(y+srcheight>framebuffer.Bounds().IntegerHeight())
{
if(y>pt.y)
y--;
srcheight-=(y+srcheight-1)-framebuffer.Bounds().IntegerHeight();
}
if(x+srcwidth>framebuffer.Bounds().IntegerWidth())
{
if(x>pt.x)
x--;
srcwidth-=(x+srcwidth-1)-framebuffer.Bounds().IntegerWidth();
srcbuffer += incval * srcinc;
srcheight -= incval;
destbuffer += incval * destinc;
}
if(x<0)
{
if(x<pt.x)
x++;
incval=0-x;
srcbuffer+=incval;
srcwidth-=incval;
destbuffer+=incval*4;
if (y + srcheight > framebuffer.Bounds().IntegerHeight()) {
if(y > pt.y)
y--;
srcheight -= (y + srcheight - 1) - framebuffer.Bounds().IntegerHeight();
}
if (x + srcwidth > framebuffer.Bounds().IntegerWidth()) {
if(x > pt.x)
x--;
srcwidth -= (x + srcwidth - 1) - framebuffer.Bounds().IntegerWidth();
}
if (x < 0) {
if(x < pt.x)
x++;
incval = 0 - x;
srcbuffer += incval;
srcwidth -= incval;
destbuffer += incval * 4;
}
// index pointers which are incremented during the course of the blit
uint8 *srcindex = srcbuffer;
uint8 *destindex = destbuffer;
uint8 *rowptr = NULL;
int32 value;
srcindex=srcbuffer;
destindex=destbuffer;
for(i=0; i<srcheight; i++)
{
rowptr=destindex;
for(j=0;j<srcwidth;j++)
{
value=*(srcindex+j) ^ 255;
if(value!=255)
{
if(d->draw_mode==B_OP_COPY)
{
rowptr[0]=uint8(highcolor.blue-(value*bstep));
rowptr[1]=uint8(highcolor.green-(value*gstep));
rowptr[2]=uint8(highcolor.red-(value*rstep));
rowptr[3]=255;
}
else
if(d->draw_mode==B_OP_OVER)
{
if(highcolor.alpha>127)
{
rowptr[0]=uint8(highcolor.blue-(value*(float(highcolor.blue-rowptr[0])/255.0)));
rowptr[1]=uint8(highcolor.green-(value*(float(highcolor.green-rowptr[1])/255.0)));
rowptr[2]=uint8(highcolor.red-(value*(float(highcolor.red-rowptr[2])/255.0)));
rowptr[3]=255;
}
for (int32 i = 0; i < srcheight; i++) {
rowptr = destindex;
for(int32 j = 0; j < srcwidth; j++) {
value = *(srcindex + j) ^ 255;
if (value != 255) {
if(d->draw_mode == B_OP_COPY) {
rowptr[0] = uint8(highcolor.blue - (value * bstep));
rowptr[1] = uint8(highcolor.green - (value * gstep));
rowptr[2] = uint8(highcolor.red - (value * rstep));
rowptr[3] = 255;
} else if (d->draw_mode == B_OP_OVER) {
if(highcolor.alpha>127) {
rowptr[0] = uint8(highcolor.blue - (value * (float(highcolor.blue - rowptr[0]) / 255.0)));
rowptr[1] = uint8(highcolor.green - (value * (float(highcolor.green - rowptr[1]) / 255.0)));
rowptr[2] = uint8(highcolor.red - (value * (float(highcolor.red - rowptr[2]) / 255.0)));
rowptr[3] = 255;
}
}
}
rowptr+=4;
rowptr += 4;
}
srcindex+=srcinc;
destindex+=destinc;
srcindex += srcinc;
destindex += destinc;
}
ReleaseBuffer();
}