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wine
wine-winehq
Commits
2c865061
Commit
2c865061
authored
Feb 13, 2001
by
François Gouget
Committed by
Alexandre Julliard
Feb 13, 2001
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CreateIcon must perform color depth conversion if the provided bitmap
is not of the same depth as the screen. Added some documentation.
parent
eb2e0de7
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1 changed file
with
81 additions
and
7 deletions
+81
-7
cursoricon.c
windows/cursoricon.c
+81
-7
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windows/cursoricon.c
View file @
2c865061
...
...
@@ -1130,16 +1130,59 @@ HICON16 WINAPI CreateIcon16( HINSTANCE16 hInstance, INT16 nWidth,
/***********************************************************************
* CreateIcon (USER32.@)
*/
HICON
WINAPI
CreateIcon
(
HINSTANCE
hInstance
,
INT
nWidth
,
INT
nHeight
,
BYTE
bPlanes
,
BYTE
bBitsPixel
,
LPCVOID
lpANDbits
,
LPCVOID
lpXORbits
)
{
CURSORICONINFO
info
;
*
* Creates an icon based on the specified bitmaps. The bitmaps must be
* provided in a device dependent format and will be resized to
* (SM_CXICON,SM_CYICON) and depth converted to match the screen's color
* depth. The provided bitmaps must be top-down bitmaps.
* Although Windows does not support 15bpp(*) this API must support it
* for Winelib applications.
*
* (*) Windows does not support 15bpp but it supports the 555 RGB 16bpp
* format!
*
* BUGS
*
* - The provided bitmaps are not resized!
* - The documentation says the lpXORbits bitmap must be in a device
* dependent format. But we must still resize it and perform depth
* conversions if necessary.
* - I'm a bit unsure about the how the 'device dependent format' thing works.
* I did some tests on windows and found that if you provide a 16bpp bitmap
* in lpXORbits, then its format but be 565 RGB if the screen's bit depth
* is 16bpp but it must be 555 RGB if the screen's bit depth is anything
* else. I don't know if this is part of the GDI specs or if this is a
* quirk of the graphics card driver.
* - You may think that we check whether the bit depths match or not
* as an optimization. But the truth is that the conversion using
* CreateDIBitmap does not work for some bit depth (e.g. 8bpp) and I have
* no idea why.
* - I'm pretty sure that all the things we do in CreateIcon should
* also be done in CreateIconIndirect...
*/
HICON
WINAPI
CreateIcon
(
HINSTANCE
hInstance
,
/* the application's hInstance, currently unused */
INT
nWidth
,
/* the width of the provided bitmaps */
INT
nHeight
,
/* the height of the provided bitmaps */
BYTE
bPlanes
,
/* the number of planes in the provided bitmaps */
BYTE
bBitsPixel
,
/* the number of bits per pixel of the lpXORbits bitmap */
LPCVOID
lpANDbits
,
/* a monochrome bitmap representing the icon's mask */
LPCVOID
lpXORbits
/* the icon's 'color' bitmap */
)
{
HICON
hIcon
;
HDC
hdc
;
TRACE_
(
icon
)(
"%dx%dx%d, xor=%p, and=%p
\n
"
,
nWidth
,
nHeight
,
bPlanes
*
bBitsPixel
,
lpXORbits
,
lpANDbits
);
hdc
=
GetDC
(
0
);
if
(
!
hdc
)
return
0
;
if
(
GetDeviceCaps
(
hdc
,
BITSPIXEL
)
==
bBitsPixel
)
{
CURSORICONINFO
info
;
info
.
ptHotSpot
.
x
=
ICON_HOTSPOT
;
info
.
ptHotSpot
.
y
=
ICON_HOTSPOT
;
info
.
nWidth
=
nWidth
;
...
...
@@ -1148,7 +1191,38 @@ HICON WINAPI CreateIcon( HINSTANCE hInstance, INT nWidth,
info
.
bPlanes
=
bPlanes
;
info
.
bBitsPerPixel
=
bBitsPixel
;
return
CreateCursorIconIndirect16
(
0
,
&
info
,
lpANDbits
,
lpXORbits
);
hIcon
=
CreateCursorIconIndirect16
(
0
,
&
info
,
lpANDbits
,
lpXORbits
);
}
else
{
ICONINFO
iinfo
;
BITMAPINFO
bmi
;
iinfo
.
fIcon
=
TRUE
;
iinfo
.
xHotspot
=
ICON_HOTSPOT
;
iinfo
.
yHotspot
=
ICON_HOTSPOT
;
iinfo
.
hbmMask
=
CreateBitmap
(
nWidth
,
nHeight
,
1
,
1
,
lpANDbits
);
bmi
.
bmiHeader
.
biSize
=
sizeof
(
bmi
.
bmiHeader
);
bmi
.
bmiHeader
.
biWidth
=
nWidth
;
bmi
.
bmiHeader
.
biHeight
=-
nHeight
;
bmi
.
bmiHeader
.
biPlanes
=
bPlanes
;
bmi
.
bmiHeader
.
biBitCount
=
bBitsPixel
;
bmi
.
bmiHeader
.
biCompression
=
BI_RGB
;
bmi
.
bmiHeader
.
biSizeImage
=
0
;
bmi
.
bmiHeader
.
biXPelsPerMeter
=
0
;
bmi
.
bmiHeader
.
biYPelsPerMeter
=
0
;
bmi
.
bmiHeader
.
biClrUsed
=
0
;
bmi
.
bmiHeader
.
biClrImportant
=
0
;
iinfo
.
hbmColor
=
CreateDIBitmap
(
hdc
,
&
bmi
.
bmiHeader
,
CBM_INIT
,
lpXORbits
,
&
bmi
,
DIB_RGB_COLORS
);
hIcon
=
CreateIconIndirect
(
&
iinfo
);
DeleteObject
(
iinfo
.
hbmMask
);
DeleteObject
(
iinfo
.
hbmColor
);
}
ReleaseDC
(
0
,
hdc
);
return
hIcon
;
}
...
...
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