colin/Megapixels
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Make thumbnail work

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This commit is contained in:
Benjamin Schaaf
2020-11-28 00:40:34 +11:00
parent 17ade28f02
commit 065bbcb7e5
1 changed files with 34 additions and 14 deletions
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48
main.c
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@@ -155,9 +155,42 @@ void mp_main_set_preview(cairo_surface_t *image)
NULL);
}
static void
draw_surface_scaled_centered(
cairo_t *cr, uint32_t dst_width, uint32_t dst_height, cairo_surface_t *surface)
{
cairo_save(cr);
cairo_translate(cr, dst_width / 2, dst_height / 2);
int width = cairo_image_surface_get_width(surface);
int height = cairo_image_surface_get_height(surface);
double scale = MIN(dst_width / (double) width, dst_height / (double) height);
cairo_scale(cr, scale, scale);
cairo_translate(cr, -width / 2, -height / 2);
cairo_set_source_surface(cr, surface, 0, 0);
cairo_paint(cr);
cairo_restore(cr);
}
static bool
capture_completed(const char *fname)
{
// Create a thumbnail from the current surface
cairo_surface_t *thumb = cairo_image_surface_create(
CAIRO_FORMAT_ARGB32,
24,
24);
cairo_t *cr = cairo_create(thumb);
draw_surface_scaled_centered(cr, 24, 24, surface);
cairo_destroy(cr);
gtk_image_set_from_surface(GTK_IMAGE(thumb_last), thumb);
cairo_surface_destroy(thumb);
return false;
}
@@ -263,20 +296,7 @@ preview_draw(GtkWidget *widget, cairo_t *cr, gpointer data)
}
if (surface) {
cairo_save(cr);
cairo_translate(cr, preview_width / 2, preview_height / 2);
int width = cairo_image_surface_get_width(surface);
int height = cairo_image_surface_get_height(surface);
double scale = MIN(preview_width / (double) width, preview_height / (double) height);
cairo_scale(cr, scale, scale);
cairo_translate(cr, -width / 2, -height / 2);
cairo_set_source_surface(cr, surface, 0, 0);
cairo_paint(cr);
cairo_restore(cr);
draw_surface_scaled_centered(cr, preview_width, preview_height, surface);
}
cairo_set_source_surface(cr, status_surface, 0, 0);