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Merged img_display() into img_render()

This commit is contained in:
Bert 2011-01-21 12:13:52 +01:00
parent 44921e07aa
commit 629d37376d
3 changed files with 32 additions and 33 deletions
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57
image.c
View File

@ -62,40 +62,13 @@ int img_load(img_t *img, const char *filename) {
imlib_context_set_image(im); imlib_context_set_image(im);
img->re = 0;
img->w = imlib_image_get_width(); img->w = imlib_image_get_width();
img->h = imlib_image_get_height(); img->h = imlib_image_get_height();
return 0; return 0;
} }
void img_display(img_t *img, win_t *win) {
float zw, zh;
if (!img || !win || !imlib_context_get_image())
return;
/* set zoom level to fit image into window */
if (img->scalemode != SCALE_ZOOM) {
zw = (float) win->w / (float) img->w;
zh = (float) win->h / (float) img->h;
img->zoom = MIN(zw, zh);
if (img->zoom < zoom_min)
img->zoom = zoom_min;
else if (img->zoom > zoom_max)
img->zoom = zoom_max;
if (img->scalemode == SCALE_DOWN && img->zoom > 1.0)
img->zoom = 1.0;
}
/* center image in window */
img->x = (win->w - img->w * img->zoom) / 2;
img->y = (win->h - img->h * img->zoom) / 2;
img_render(img, win);
}
void img_check_pan(img_t *img, win_t *win) { void img_check_pan(img_t *img, win_t *win) {
if (!img) if (!img)
return; return;
@ -121,11 +94,37 @@ void img_check_pan(img_t *img, win_t *win) {
void img_render(img_t *img, win_t *win) { void img_render(img_t *img, win_t *win) {
int sx, sy, sw, sh; int sx, sy, sw, sh;
int dx, dy, dw, dh; int dx, dy, dw, dh;
float zw, zh;
if (!img || !win || !imlib_context_get_image()) if (!img || !win || !imlib_context_get_image())
return; return;
img_check_pan(img, win); if (!img->re) {
/* rendered for the first time */
img->re = 1;
/* set zoom level to fit image into window */
if (img->scalemode != SCALE_ZOOM) {
zw = (float) win->w / (float) img->w;
zh = (float) win->h / (float) img->h;
img->zoom = MIN(zw, zh);
if (img->zoom < zoom_min)
img->zoom = zoom_min;
else if (img->zoom > zoom_max)
img->zoom = zoom_max;
if (img->scalemode == SCALE_DOWN && img->zoom > 1.0)
img->zoom = 1.0;
}
/* center image in window */
img->x = (win->w - img->w * img->zoom) / 2;
img->y = (win->h - img->h * img->zoom) / 2;
} else {
/* typically after zooming and panning */
img_check_pan(img, win);
}
if (img->x < 0) { if (img->x < 0) {
sx = -img->x / img->zoom; sx = -img->x / img->zoom;

2
image.h
View File

@ -30,6 +30,7 @@ typedef enum scalemode_e {
typedef struct img_s { typedef struct img_s {
float zoom; float zoom;
scalemode_t scalemode; scalemode_t scalemode;
unsigned char re;
int x; int x;
int y; int y;
int w; int w;
@ -40,7 +41,6 @@ void imlib_init(win_t*);
void imlib_destroy(); void imlib_destroy();
int img_load(img_t*, const char*); int img_load(img_t*, const char*);
void img_display(img_t*, win_t*);
void img_render(img_t*, win_t*); void img_render(img_t*, win_t*);
int img_zoom_in(img_t*); int img_zoom_in(img_t*);

6
main.c
View File

@ -93,7 +93,7 @@ int main(int argc, char **argv) {
imlib_init(&win); imlib_init(&win);
img_load(&img, filenames[fileidx]); img_load(&img, filenames[fileidx]);
img_display(&img, &win); img_render(&img, &win);
update_title(); update_title();
run(); run();
@ -146,14 +146,14 @@ void on_keypress(XEvent *ev) {
case 'n': case 'n':
if (fileidx + 1 < filecnt) { if (fileidx + 1 < filecnt) {
img_load(&img, filenames[++fileidx]); img_load(&img, filenames[++fileidx]);
img_display(&img, &win); img_render(&img, &win);
update_title(); update_title();
} }
break; break;
case 'p': case 'p':
if (fileidx > 0) { if (fileidx > 0) {
img_load(&img, filenames[--fileidx]); img_load(&img, filenames[--fileidx]);
img_display(&img, &win); img_render(&img, &win);
update_title(); update_title();
} }
break; break;