/*
|
Simple DirectMedia Layer
|
Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
|
|
This software is provided 'as-is', without any express or implied
|
warranty. In no event will the authors be held liable for any damages
|
arising from the use of this software.
|
|
Permission is granted to anyone to use this software for any purpose,
|
including commercial applications, and to alter it and redistribute it
|
freely, subject to the following restrictions:
|
|
1. The origin of this software must not be misrepresented; you must not
|
claim that you wrote the original software. If you use this software
|
in a product, an acknowledgment in the product documentation would be
|
appreciated but is not required.
|
2. Altered source versions must be plainly marked as such, and must not be
|
misrepresented as being the original software.
|
3. This notice may not be removed or altered from any source distribution.
|
*/
|
#include "../../SDL_internal.h"
|
|
#if SDL_VIDEO_DRIVER_OS2
|
|
#include "SDL_os2util.h"
|
|
HPOINTER utilCreatePointer(SDL_Surface *surface, ULONG ulHotX, ULONG ulHotY)
|
{
|
HBITMAP hbm;
|
BITMAPINFOHEADER2 bmih = { 0 };
|
BITMAPINFO bmi = { 0 };
|
HPS hps;
|
PULONG pulBitmap;
|
PULONG pulDst, pulSrc, pulDstMask;
|
ULONG ulY, ulX;
|
HPOINTER hptr = NULLHANDLE;
|
|
if (surface->format->format != SDL_PIXELFORMAT_ARGB8888) {
|
debug_os2("Image format should be SDL_PIXELFORMAT_ARGB8888");
|
return NULLHANDLE;
|
}
|
|
pulBitmap = SDL_malloc(surface->h * surface->w * 4 * 2);
|
if (pulBitmap == NULL) {
|
SDL_OutOfMemory();
|
return NULLHANDLE;
|
}
|
|
/* pulDst - last line of surface (image) part of the result bitmap */
|
pulDst = &pulBitmap[ (surface->h - 1) * surface->w ];
|
/* pulDstMask - last line of mask part of the result bitmap */
|
pulDstMask = &pulBitmap[ (2 * surface->h - 1) * surface->w ];
|
/* pulSrc - first line of source image */
|
pulSrc = (PULONG)surface->pixels;
|
|
for (ulY = 0; ulY < surface->h; ulY++) {
|
for (ulX = 0; ulX < surface->w; ulX++) {
|
if ((pulSrc[ulX] & 0xFF000000) == 0) {
|
pulDst[ulX] = 0;
|
pulDstMask[ulX] = 0xFFFFFFFF;
|
} else {
|
pulDst[ulX] = pulSrc[ulX] & 0xFFFFFF;
|
pulDstMask[ulX] = 0;
|
}
|
}
|
|
/* Set image and mask pointers on one line up */
|
pulDst -= surface->w;
|
pulDstMask -= surface->w;
|
/* Set source image pointer to the next line */
|
pulSrc = (PULONG) (((PCHAR)pulSrc) + surface->pitch);
|
}
|
|
/* Create system bitmap object. */
|
bmih.cbFix = sizeof(BITMAPINFOHEADER2);
|
bmih.cx = surface->w;
|
bmih.cy = 2 * surface->h;
|
bmih.cPlanes = 1;
|
bmih.cBitCount = 32;
|
bmih.ulCompression = BCA_UNCOMP;
|
bmih.cbImage = bmih.cx * bmih.cy * 4;
|
|
bmi.cbFix = sizeof(BITMAPINFOHEADER);
|
bmi.cx = bmih.cx;
|
bmi.cy = bmih.cy;
|
bmi.cPlanes = 1;
|
bmi.cBitCount = 32;
|
|
hps = WinGetPS(HWND_DESKTOP);
|
hbm = GpiCreateBitmap(hps, (PBITMAPINFOHEADER2)&bmih, CBM_INIT,
|
(PBYTE)pulBitmap, (PBITMAPINFO2)&bmi);
|
if (hbm == GPI_ERROR) {
|
debug_os2("GpiCreateBitmap() failed");
|
} else {
|
/* Create a system pointer object. */
|
hptr = WinCreatePointer(HWND_DESKTOP, hbm, TRUE, ulHotX, ulHotY);
|
if (hptr == NULLHANDLE) {
|
debug_os2("WinCreatePointer() failed");
|
}
|
}
|
GpiDeleteBitmap(hbm);
|
|
WinReleasePS(hps);
|
SDL_free(pulBitmap);
|
|
return hptr;
|
}
|
|
#endif /* SDL_VIDEO_DRIVER_OS2 */
|
|
/* vi: set ts=4 sw=4 expandtab: */
|
