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xshm

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git-svn-id: http://svn2.nishi.boats/svn/milsko/trunk@69 b9cfdab3-6d41-4d17-bbe4-086880011989
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Nishi 2025-09-30 00:52:43 +00:00
commit e230b5441c
9 changed files with 172 additions and 12 deletions
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64
src/x11.c
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@ -25,6 +25,8 @@ MwLL MwLLCreate(MwLL parent, int x, int y, int width, int height) {
r->gc = XCreateGC(r->display, r->window, 0, 0);
XSetGraphicsExposures(r->display, r->gc, False);
XSelectInput(r->display, r->window, mask);
XMapWindow(r->display, r->window);
@ -137,3 +139,65 @@ void MwLLSleep(int ms) {
void MwLLSetTitle(MwLL handle, const char* title) {
XSetStandardProperties(handle->display, handle->window, title, "Mw Widget Toolkit", None, (char**)NULL, 0, NULL);
}
MwLLPixmap MwLLCreatePixmap(MwLL handle, unsigned char* data, int width, int height) {
MwLLPixmap r = malloc(sizeof(*r));
char* d = malloc(4 * width * height);
int y, x;
r->width = width;
r->height = height;
r->display = handle->display;
r->use_shm = XShmQueryExtension(handle->display) ? 1 : 0;
if(r->use_shm) {
r->image = XShmCreateImage(handle->display, DefaultVisual(handle->display, DefaultScreen(handle->display)), 24, ZPixmap, NULL, &r->shm, width, height);
free(d);
r->shm.shmid = shmget(IPC_PRIVATE, r->image->bytes_per_line * height, IPC_CREAT | 0777);
r->shm.shmaddr = d = r->image->data = shmat(r->shm.shmid, 0, 0);
r->shm.readOnly = False;
XShmAttach(handle->display, &r->shm);
} else {
r->image = XCreateImage(handle->display, DefaultVisual(handle->display, DefaultScreen(handle->display)), 24, ZPixmap, 0, d, width, height, 32, width * 4);
}
for(y = 0; y < height; y++) {
for(x = 0; x < height; x++) {
unsigned char* px = &data[(y * width + x) * 3];
unsigned long p = 0;
p <<= 8;
p |= px[0];
p <<= 8;
p |= px[1];
p <<= 8;
p |= px[2];
XPutPixel(r->image, x, y, p);
}
}
return r;
}
void MwLLDestroyPixmap(MwLLPixmap pixmap) {
if(pixmap->use_shm) {
XShmDetach(pixmap->display, &pixmap->shm);
}
XDestroyImage(pixmap->image);
if(pixmap->use_shm) {
shmdt(pixmap->shm.shmaddr);
shmctl(pixmap->shm.shmid, IPC_RMID, 0);
}
free(pixmap);
}
void MwLLDrawPixmap(MwLL handle, MwRect* rect, MwLLPixmap pixmap) {
if(pixmap->image != NULL) {
if(pixmap->use_shm) {
XShmPutImage(handle->display, handle->window, handle->gc, pixmap->image, 0, 0, rect->x, rect->y, rect->width, rect->height, False);
} else {
XPutImage(handle->display, handle->window, handle->gc, pixmap->image, 0, 0, rect->x, rect->y, rect->width, rect->height);
}
}
}