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@ -67,6 +67,9 @@ void img_init(img_t *img, win_t *win)
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img->alpha = !RENDER_WHITE_ALPHA;
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img->multi.cap = img->multi.cnt = 0;
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img->multi.animate = false;
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img->cmod = imlib_create_color_modifier();
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img_set_gamma(img, options->gamma);
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}
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void exif_auto_orientate(const fileinfo_t *file)
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@ -303,6 +306,8 @@ bool img_load(img_t *img, const fileinfo_t *file)
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img_load_gif(img, file);
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#endif
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img_set_gamma(img, img->gamma);
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img->w = imlib_image_get_width();
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img->h = imlib_image_get_height();
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img->scalemode = options->scalemode;
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@ -335,6 +340,9 @@ void img_close(img_t *img, bool decache)
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imlib_free_image();
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img->im = NULL;
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}
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if (img->cmod)
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imlib_context_set_color_modifier(NULL);
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}
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void img_check_pan(img_t *img, bool moved)
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@ -706,6 +714,28 @@ void img_toggle_antialias(img_t *img)
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img->dirty = true;
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}
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void img_set_gamma(img_t *img, int gamma)
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{
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if (img == NULL)
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return;
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img->gamma = MIN(MAX(gamma, -GAMMA_RANGE), GAMMA_RANGE);
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if (img->im && img->cmod) {
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if (img->gamma == 0) {
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imlib_context_set_color_modifier(NULL);
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} else {
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double range = img->gamma <= 0 ? 1.0 : GAMMA_MAX - 1.0;
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imlib_context_set_color_modifier(img->cmod);
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imlib_reset_color_modifier();
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imlib_modify_color_modifier_gamma(
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1.0 + (double) img->gamma
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* (range / (double) GAMMA_RANGE));
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}
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img->dirty = true;
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}
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}
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bool img_frame_goto(img_t *img, int n)
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{
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if (img == NULL || img->im == NULL)
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