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Implemented the GRADIENT_FILL_RECT{H|V} cases of GdiGradientFill.

This commit is contained in:
Maxime Bellengé 2003-04-07 23:21:03 +00:00 committed by Alexandre Julliard
parent b70b832607
commit 065ac4de85
4 changed files with 72 additions and 14 deletions
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1
dlls/gdi/gdi32.spec
View File

@ -157,6 +157,7 @@
@ stub GdiGetLocalBrush
@ stub GdiGetLocalDC
@ stub GdiGetLocalFont
@ stdcall GdiGradientFill(long ptr long ptr long long)
@ stub GdiIsMetaFileDC
@ stub GdiPlayDCScript
@ stub GdiPlayJournal

2
dlls/msimg32/msimg32.spec
View File

@ -1,5 +1,5 @@
@ stdcall AlphaBlend(long long long long long long long long long long long)
@ stub DllInitialize
@ stdcall GradientFill(long ptr long ptr long long)
@ stdcall GradientFill(long ptr long ptr long long) gdi32.GdiGradientFill
@ stdcall TransparentBlt(long long long long long long long long long long long)
@ stdcall vSetDdrawflag()

13
dlls/msimg32/msimg32_main.c
View File

@ -23,19 +23,6 @@
WINE_DEFAULT_DEBUG_CHANNEL(msimg32);
/******************************************************************************
* GradientFill (MSIMG32.@)
*/
BOOL WINAPI GradientFill( HDC hdc, TRIVERTEX *vert_array, ULONG nvert,
void * grad_array, ULONG ngrad, ULONG mode )
{
FIXME("stub: %ld vertices %ld gradients mode %lx\n", nvert, ngrad, mode);
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
return FALSE;
}
/******************************************************************************
* AlphaBlend (MSIMG32.@)
*/

70
graphics/painting.c
View File

@ -1065,3 +1065,73 @@ POINT *GDI_Bezier( const POINT *Points, INT count, INT *nPtsOut )
TRACE("Produced %d points\n", *nPtsOut);
return out;
}
/******************************************************************************
* GradientFill (GDI32.@)
*/
BOOL WINAPI GdiGradientFill( HDC hdc, TRIVERTEX *vert_array, ULONG nvert,
void * grad_array, ULONG ngrad, ULONG mode )
{
int i,j,y,x;
GRADIENT_RECT *rect;
double ired,igreen,iblue;
double red, green,blue;
TRACE("vert_array:0x%08lx nvert:%ld grad_array:0x%08lx ngrad:%ld\n",(long)vert_array,nvert,(long)grad_array,ngrad);
switch(mode) {
case GRADIENT_FILL_RECT_H:
for(i=0;i<ngrad;i++) {
rect = (GRADIENT_RECT*)((long)grad_array+i*sizeof(GRADIENT_RECT));
y = vert_array[rect->UpperLeft].y;
/* Precompute some stuffs to speed up a little bit */
ired = (double)(vert_array[rect->LowerRight].Red - vert_array[rect->UpperLeft].Red) / (double)(vert_array[rect->LowerRight].x - vert_array[rect->UpperLeft].x);
igreen = (double)(vert_array[rect->LowerRight].Green - vert_array[rect->UpperLeft].Green) / (double)(vert_array[rect->LowerRight].x - vert_array[rect->UpperLeft].x);
iblue = (double)(vert_array[rect->LowerRight].Blue - vert_array[rect->UpperLeft].Blue) / (double)(vert_array[rect->LowerRight].x - vert_array[rect->UpperLeft].x);
red = vert_array[rect->UpperLeft].Red;
green = vert_array[rect->UpperLeft].Green;
blue = vert_array[rect->UpperLeft].Blue;
/* Draw the first line */
for (j=vert_array[rect->UpperLeft].x; j<=vert_array[rect->LowerRight].x; j++) {
SetPixel(hdc,j,y,RGB(((int)red)>>8,((int)green)>>8,((int)blue)>>8));
red += ired;
green += igreen;
blue += iblue;
}
/* Extends to the correct size */
StretchBlt(hdc,vert_array[rect->UpperLeft].x, y+1,(vert_array[rect->LowerRight].x - vert_array[rect->UpperLeft].x), (vert_array[rect->LowerRight].y - y - 1),
hdc,vert_array[rect->UpperLeft].x, y , (vert_array[rect->LowerRight].x - vert_array[rect->UpperLeft].x), 1, SRCCOPY);
}
break;
case GRADIENT_FILL_RECT_V:
for(i=0;i<ngrad;i++) {
rect = (GRADIENT_RECT*)((long)grad_array+i*sizeof(GRADIENT_RECT));
x = vert_array[rect->UpperLeft].x;
/* Precompute some stuffs to speed up a little bit */
ired = (double)(vert_array[rect->LowerRight].Red - vert_array[rect->UpperLeft].Red) / (double)(vert_array[rect->LowerRight].y - vert_array[rect->UpperLeft].y);
igreen = (double)(vert_array[rect->LowerRight].Green - vert_array[rect->UpperLeft].Green) / (double)(vert_array[rect->LowerRight].y - vert_array[rect->UpperLeft].y);
iblue = (double)(vert_array[rect->LowerRight].Blue - vert_array[rect->UpperLeft].Blue) / (double)(vert_array[rect->LowerRight].y - vert_array[rect->UpperLeft].y);
red = vert_array[rect->UpperLeft].Red;
green = vert_array[rect->UpperLeft].Green;
blue = vert_array[rect->UpperLeft].Blue;
/* Draw the first line */
for (j=vert_array[rect->UpperLeft].y; j<=vert_array[rect->LowerRight].y; j++) {
SetPixel(hdc,x,j,RGB(((int)red)>>8,((int)green)>>8,((int)blue)>>8));
red += ired;
green += igreen;
blue += iblue;
}
/* Extends to the correct size */
StretchBlt(hdc,x+1,vert_array[rect->UpperLeft].y,
(vert_array[rect->LowerRight].x - vert_array[rect->UpperLeft].x) - 1, (vert_array[rect->LowerRight].y - vert_array[rect->UpperLeft].y),
hdc, x, vert_array[rect->UpperLeft].y, 1, (vert_array[rect->LowerRight].y - vert_array[rect->UpperLeft].y), SRCCOPY);
}
break;
case GRADIENT_FILL_TRIANGLE:
FIXME("GRADIENT_FILL_TRIANGLE stub\n");
default:
return FALSE;
}
return TRUE;
}