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authorBen Boeckel <mathstuf@gmail.com>2019-10-29 20:41:14 -0400
committerBen Boeckel <mathstuf@gmail.com>2019-10-29 20:41:14 -0400
commit20df5678b0df2401126549d5d92853bc8cc474ef (patch)
treec7b63fef65b957f0573c329470dfe85c2a4b55c9
parent7d154c00258c70136b0bca8ae162fe08c645373e (diff)
events: guard against NULL returns from imlib calls
This can happen with images that have ridiculous dimensions.
-rw-r--r--src/events.c38
1 files changed, 21 insertions, 17 deletions
diff --git a/src/events.c b/src/events.c
index 89eaab8..f7ffe59 100644
--- a/src/events.c
+++ b/src/events.c
@@ -632,12 +632,14 @@ static void feh_event_handle_MotionNotify(XEvent * ev)
Imlib_Image temp;
temp = gib_imlib_create_rotated_image(winwid->im, 0.0);
- winwid->im_w = gib_imlib_image_get_width(temp);
- winwid->im_h = gib_imlib_image_get_height(temp);
- gib_imlib_free_image_and_decache(temp);
- if (!winwid->full_screen && !opt.geom_flags)
- winwidget_resize(winwid, winwid->im_w, winwid->im_h, 0);
- winwid->has_rotated = 1;
+ if (temp != NULL) {
+ winwid->im_w = gib_imlib_image_get_width(temp);
+ winwid->im_h = gib_imlib_image_get_height(temp);
+ gib_imlib_free_image_and_decache(temp);
+ if (!winwid->full_screen && !opt.geom_flags)
+ winwidget_resize(winwid, winwid->im_w, winwid->im_h, 0);
+ winwid->has_rotated = 1;
+ }
}
winwid->im_angle = (ev->xmotion.x - winwid->w / 2) / ((double) winwid->w / 2) * 3.1415926535;
D(("angle: %f\n", winwid->im_angle));
@@ -653,17 +655,19 @@ static void feh_event_handle_MotionNotify(XEvent * ev)
D(("Blurring\n"));
temp = gib_imlib_clone_image(winwid->im);
- blur_radius = (((double) ev->xmotion.x / winwid->w) * 20) - 10;
- D(("angle: %d\n", blur_radius));
- if (blur_radius > 0)
- gib_imlib_image_sharpen(temp, blur_radius);
- else
- gib_imlib_image_blur(temp, 0 - blur_radius);
- ptr = winwid->im;
- winwid->im = temp;
- winwidget_render_image(winwid, 0, 1);
- gib_imlib_free_image_and_decache(winwid->im);
- winwid->im = ptr;
+ if (temp != NULL) {
+ blur_radius = (((double) ev->xmotion.x / winwid->w) * 20) - 10;
+ D(("angle: %d\n", blur_radius));
+ if (blur_radius > 0)
+ gib_imlib_image_sharpen(temp, blur_radius);
+ else
+ gib_imlib_image_blur(temp, 0 - blur_radius);
+ ptr = winwid->im;
+ winwid->im = temp;
+ winwidget_render_image(winwid, 0, 1);
+ gib_imlib_free_image_and_decache(winwid->im);
+ winwid->im = ptr;
+ }
}
} else {
while (XCheckTypedWindowEvent(disp, ev->xmotion.window, MotionNotify, ev));