void
gib_imlib_render_image_part_on_drawable_at_size_with_rotation(Drawable d,
Imlib_Image im,
int sx, int sy,
int sw, int sh,
int dx, int dy,
int dw, int dh,
double angle,
char dither,
char blend,
char alias)
{
Imlib_Image new_im;
imlib_context_set_image(im);
imlib_context_set_drawable(d);
imlib_context_set_anti_alias(alias);
imlib_context_set_dither(dither);
imlib_context_set_angle(angle);
imlib_context_set_blend(blend);
new_im = imlib_create_rotated_image(angle);
imlib_context_set_image(new_im);
imlib_render_image_part_on_drawable_at_size(sx, sy, sw, sh, dx, dy, dw,
dh);
imlib_free_image_and_decache();
}
static tvalue im2_draw(struct sequ_image *img,XID drw,
int sx, int sy, int sw, int sh,
int tx, int ty, int tw, int th)
{
if(!img)
return FALSE;
imlib_context_set_image((Imlib_Image)img->privdata);
imlib_context_set_drawable(drw);
imlib_render_image_part_on_drawable_at_size
(sx,sy,sw,sh,tx,ty,tw,th);
return TRUE;
}
void
gib_imlib_render_image_part_on_drawable_at_size(Drawable d, Imlib_Image im,
int sx, int sy, int sw,
int sh, int dx, int dy,
int dw, int dh, char dither,
char blend, char alias)
{
imlib_context_set_image(im);
imlib_context_set_drawable(d);
imlib_context_set_anti_alias(alias);
imlib_context_set_dither(dither);
imlib_context_set_blend(blend);
imlib_context_set_angle(0);
imlib_render_image_part_on_drawable_at_size(sx, sy, sw, sh, dx, dy, dw,
dh);
}
int
main(int argc, char **argv)
{
Imlib_Image *im = NULL;
char *file = NULL;
int no = 1;
const char *display_name = getenv("DISPLAY");
if (argc < 2)
return 1;
file = argv[no];
if (display_name == NULL)
display_name = ":0";
disp = XOpenDisplay(display_name);
if (disp == NULL)
{
fprintf(stderr, "Can't open display %s\n", display_name);
return 1;
}
vis = DefaultVisual(disp, DefaultScreen(disp));
depth = DefaultDepth(disp, DefaultScreen(disp));
cm = DefaultColormap(disp, DefaultScreen(disp));
win = XCreateSimpleWindow(disp, DefaultRootWindow(disp), 0, 0, 10, 10,
0, 0, 0);
XSelectInput(disp, win, ButtonPressMask | ButtonReleaseMask |
ButtonMotionMask | PointerMotionMask);
imlib_context_set_display(disp);
imlib_context_set_visual(vis);
imlib_context_set_colormap(cm);
imlib_context_set_progress_function(progress);
imlib_context_set_progress_granularity(10);
imlib_context_set_drawable(win);
im = imlib_load_image(file);
while (!im)
{
no++;
if (no == argc)
{
fprintf(stderr, "Image format not available\n");
exit(0);
}
file = argv[no];
image_width = 0;
im = imlib_load_image(file);
imlib_context_set_image(im);
}
if (!im)
{
fprintf(stderr, "Image format not available\n");
exit(0);
}
for (;;)
{
int x, y, b, count, fdsize, xfd, timeout = 0;
XEvent ev;
static int zoom_mode = 0, zx, zy;
static double zoom = 1.0;
struct timeval tval;
fd_set fdset;
double t1;
XFlush(disp);
XNextEvent(disp, &ev);
switch (ev.type)
{
case ButtonPress:
b = ev.xbutton.button;
x = ev.xbutton.x;
y = ev.xbutton.y;
if (b == 3)
{
zoom_mode = 1;
zx = x;
zy = y;
imlib_context_set_drawable(pm);
imlib_context_set_image(bg_im);
imlib_context_set_anti_alias(0);
imlib_context_set_dither(0);
imlib_context_set_blend(0);
imlib_render_image_part_on_drawable_at_size
(0, 0, image_width, image_height,
0, 0, image_width, image_height);
XSetWindowBackgroundPixmap(disp, win, pm);
XClearWindow(disp, win);
}
break;
case ButtonRelease:
b = ev.xbutton.button;
x = ev.xbutton.x;
y = ev.xbutton.y;
if (b == 3)
zoom_mode = 0;
if (b == 1)
{
no++;
if (no == argc)
no = argc - 1;
file = argv[no];
image_width = 0;
zoom = 1.0;
zoom_mode = 0;
imlib_context_set_image(im);
imlib_free_image_and_decache();
im = imlib_load_image(file);
while (!im)
{
no++;
if (no == argc)
exit(0);
file = argv[no];
image_width = 0;
im = imlib_load_image(file);
}
imlib_context_set_image(im);
}
if (b == 2)
{
no--;
if (no == 0)
no = 1;
file = argv[no];
image_width = 0;
zoom = 1.0;
zoom_mode = 0;
imlib_context_set_image(im);
imlib_free_image_and_decache();
im = imlib_load_image(file);
while (!im)
{
no--;
if (no == 0)
no = 1;
file = argv[no];
image_width = 0;
im = imlib_load_image(file);
}
imlib_context_set_image(im);
}
break;
case MotionNotify:
while (XCheckTypedWindowEvent(disp, win, MotionNotify, &ev));
x = ev.xmotion.x;
y = ev.xmotion.y;
if (zoom_mode)
{
int sx, sy, sw, sh, dx, dy, dw, dh;
zoom = ((double)x - (double)zx) / 32.0;
if (zoom < 0)
zoom = 1.0 + ((zoom * 32.0) / ((double)(zx + 1)));
else
zoom += 1.0;
if (zoom <= 0.0001)
zoom = 0.0001;
if (zoom > 1.0)
{
dx = 0;
dy = 0;
dw = image_width;
dh = image_height;
sx = zx - (zx / zoom);
sy = zy - (zy / zoom);
sw = image_width / zoom;
sh = image_height / zoom;
}
else
{
dx = zx - (zx * zoom);
dy = zy - (zy * zoom);
dw = image_width * zoom;
dh = image_height * zoom;
sx = 0;
sy = 0;
sw = image_width;
sh = image_height;
}
imlib_context_set_anti_alias(0);
imlib_context_set_dither(0);
imlib_context_set_blend(0);
imlib_context_set_image(bg_im);
imlib_render_image_part_on_drawable_at_size
(sx, sy, sw, sh, dx, dy, dw, dh);
XSetWindowBackgroundPixmap(disp, win, pm);
XClearWindow(disp, win);
XFlush(disp);
timeout = 1;
}
default:
break;
}
t1 = 0.2;
tval.tv_sec = (long)t1;
tval.tv_usec = (long)((t1 - ((double)tval.tv_sec)) * 1000000);
xfd = ConnectionNumber(disp);
fdsize = xfd + 1;
FD_ZERO(&fdset);
FD_SET(xfd, &fdset);
if (timeout)
count = select(fdsize, &fdset, NULL, NULL, &tval);
else
count = select(fdsize, &fdset, NULL, NULL, NULL);
if (count < 0)
{
if ((errno == ENOMEM) || (errno == EINVAL) || (errno == EBADF))
exit(1);
}
else
{
if ((count == 0) && (timeout))
{
int sx, sy, sw, sh, dx, dy, dw, dh;
if (zoom > 1.0)
{
dx = 0;
dy = 0;
dw = image_width;
dh = image_height;
sx = zx - (zx / zoom);
sy = zy - (zy / zoom);
sw = image_width / zoom;
sh = image_height / zoom;
}
else
{
dx = zx - (zx * zoom);
dy = zy - (zy * zoom);
dw = image_width * zoom;
dh = image_height * zoom;
sx = 0;
sy = 0;
sw = image_width;
sh = image_height;
}
imlib_context_set_anti_alias(1);
imlib_context_set_dither(1);
imlib_context_set_blend(0);
imlib_context_set_image(bg_im);
imlib_render_image_part_on_drawable_at_size
(sx, sy, sw, sh, dx, dy, dw, dh);
XSetWindowBackgroundPixmap(disp, win, pm);
XClearWindow(disp, win);
XFlush(disp);
timeout = 0;
}
}
}
return 0;
}
static int
progress(Imlib_Image im, char percent, int update_x, int update_y,
int update_w, int update_h)
{
/* first time it's called */
imlib_context_set_drawable(pm);
imlib_context_set_anti_alias(0);
imlib_context_set_dither(0);
imlib_context_set_blend(0);
if (image_width == 0)
{
int x, y, onoff;
imlib_context_set_image(im);
image_width = imlib_image_get_width();
image_height = imlib_image_get_height();
if (pm)
XFreePixmap(disp, pm);
pm = XCreatePixmap(disp, win, image_width, image_height, depth);
imlib_context_set_drawable(pm);
if (bg_im)
{
imlib_context_set_image(bg_im);
imlib_free_image_and_decache();
}
bg_im = imlib_create_image(image_width, image_height);
imlib_context_set_image(bg_im);
for (y = 0; y < image_height; y += 8)
{
onoff = (y / 8) & 0x1;
for (x = 0; x < image_width; x += 8)
{
if (onoff)
imlib_context_set_color(144, 144, 144, 255);
else
imlib_context_set_color(100, 100, 100, 255);
imlib_image_fill_rectangle(x, y, 8, 8);
onoff++;
if (onoff == 2)
onoff = 0;
}
}
imlib_render_image_part_on_drawable_at_size(0, 0, image_width,
image_height, 0, 0,
image_width, image_height);
XSetWindowBackgroundPixmap(disp, win, pm);
XResizeWindow(disp, win, image_width, image_height);
XMapWindow(disp, win);
XSync(disp, False);
}
imlib_context_set_anti_alias(0);
imlib_context_set_dither(0);
imlib_context_set_blend(1);
imlib_blend_image_onto_image(im, 0,
update_x, update_y,
update_w, update_h,
update_x, update_y, update_w, update_h);
imlib_context_set_blend(0);
imlib_render_image_part_on_drawable_at_size(update_x, update_y,
update_w, update_h,
update_x, update_y,
update_w, update_h);
XSetWindowBackgroundPixmap(disp, win, pm);
XClearArea(disp, win, update_x, update_y, update_w, update_h, False);
XFlush(disp);
return 1;
}
void img_render(img_t *img) {
win_t *win;
int sx, sy, sw, sh;
int dx, dy, dw, dh;
if (img == NULL || img->im == NULL || img->win == NULL)
return;
win = img->win;
img_fit(img);
if (!img->re) {
/* rendered for the first time */
img->re = true;
if (img->zoom * img->w <= win->w)
img->x = (win->w - img->w * img->zoom) / 2;
else
img->x = 0;
if (img->zoom * img->h <= win->h)
img->y = (win->h - img->h * img->zoom) / 2;
else
img->y = 0;
}
if (img->checkpan) {
img_check_pan(img, false);
img->checkpan = false;
}
if (!img->dirty)
return;
/* calculate source and destination offsets */
if (img->x < 0) {
sx = -img->x / img->zoom;
sw = win->w / img->zoom;
dx = 0;
dw = win->w;
} else {
sx = 0;
sw = img->w;
dx = img->x;
dw = img->w * img->zoom;
}
if (img->y < 0) {
sy = -img->y / img->zoom;
sh = win->h / img->zoom;
dy = 0;
dh = win->h;
} else {
sy = 0;
sh = img->h;
dy = img->y;
dh = img->h * img->zoom;
}
win_clear(win);
imlib_context_set_image(img->im);
if (!img->alpha && imlib_image_has_alpha())
win_draw_rect(win, win->pm, dx, dy, dw, dh, True, 0, win->white);
imlib_context_set_drawable(win->pm);
imlib_render_image_part_on_drawable_at_size(sx, sy, sw, sh, dx, dy, dw, dh);
win_draw(win);
img->dirty = false;
}
void render_image() {
/* ensure we have a sane pixmap to draw on */
ensure_window_pixmap();
/* render the checkerboard background */
render_checkerboard();
/* rendering the image, if we have one. */
if (s_image.imlib != NULL) {
/* calculate draw offsets. the pan offsets define the location of
the top left corner on the window, regardless of scaling. */
int sx, sy, dx, dy, sw, sh, dw, dh;
if (s_view.pan_x < 0) {
/* left part of image is hidden */
sx = -lround(s_view.pan_x / s_view.scale);
dx = 0;
} else {
/* left part of image is somewhere in the window */
sx = 0;
dx = s_view.pan_x;
}
if (s_view.pan_y < 0) {
/* top part of image is hidden */
sy = -lround(s_view.pan_y / s_view.scale);
dy = 0;
} else {
/* top part of image is somewhere in the window */
sy = 0;
dy = s_view.pan_y;
}
/* how much of the image is visible? */
dw = min(s_view.win_width - s_view.pan_x, s_view.win_width);
dh = min(s_view.win_height - s_view.pan_y, s_view.win_height);
dw = min(dw, lround(s_image.width * s_view.scale));
dh = min(dh, lround(s_image.height * s_view.scale));
sw = lround(dw / s_view.scale);
sh = lround(dh / s_view.scale);
fprintf(stderr, "now rendering to coordinates s=%d,%d/%dx%d d=%d,%d/%dx%d (scale: %f)\n", sx, sy, sw, sh, dx, dy, dw, dh, s_view.scale);
/* now we know all the coordinates, we can render the image */
imlib_context_set_image(s_image.imlib);
imlib_context_set_drawable(window_pixmap);
imlib_render_image_part_on_drawable_at_size(
/* sxywh */ sx, sy, sw, sh,
/* dxywh */ dx, dy, dw, dh
);
} else {
fputs("not rendering because there is no image.\n", stderr);
}
XSetWindowBackgroundPixmap(x11.display, x11_window, window_pixmap);
XClearWindow(x11.display, x11_window);
}
