diff options
Diffstat (limited to 'libass/ass_render.c')
| -rw-r--r-- | libass/ass_render.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/libass/ass_render.c b/libass/ass_render.c index 272a1e8..b00f22a 100644 --- a/libass/ass_render.c +++ b/libass/ass_render.c @@ -2687,13 +2687,13 @@ ass_render_event(ASS_Renderer *render_priv, ASS_Event *event, if (render_priv->state.scroll_direction == SCROLL_TB) device_y = y2scr(render_priv, - render_priv->state.clip_y0 + + render_priv->state.scroll_y0 + render_priv->state.scroll_shift) - bbox.y_max; else if (render_priv->state.scroll_direction == SCROLL_BT) device_y = y2scr(render_priv, - render_priv->state.clip_y1 - + render_priv->state.scroll_y1 - render_priv->state.scroll_shift) - bbox.y_min; } else if (!(render_priv->state.evt_type & EVENT_POSITIONED)) { @@ -2760,6 +2760,14 @@ ass_render_event(ASS_Renderer *render_priv, ASS_Event *event, render_priv->state.clip_y1 = render_priv->settings.frame_height; } + if (render_priv->state.evt_type & EVENT_VSCROLL) { + double y0 = y2scr_pos(render_priv, render_priv->state.scroll_y0); + double y1 = y2scr_pos(render_priv, render_priv->state.scroll_y1); + + render_priv->state.clip_y0 = FFMAX(render_priv->state.clip_y0, y0); + render_priv->state.clip_y1 = FFMIN(render_priv->state.clip_y1, y1); + } + calculate_rotation_params(render_priv, &bbox, device_x, device_y); render_and_combine_glyphs(render_priv, device_x, device_y); |