diff options
Diffstat (limited to 'src/ui')
| -rw-r--r-- | src/ui/frames.c | 112 | ||||
| -rw-r--r-- | src/ui/frames.h | 11 | ||||
| -rw-r--r-- | src/ui/ui.c | 23 | ||||
| -rw-r--r-- | src/ui/ui.h | 14 |
4 files changed, 118 insertions, 42 deletions
diff --git a/src/ui/frames.c b/src/ui/frames.c index bd862000d..63f18379d 100644 --- a/src/ui/frames.c +++ b/src/ui/frames.c @@ -740,22 +740,6 @@ meta_ui_frame_get_corner_radiuses (MetaFrames *frames, } void -meta_frames_get_corner_radiuses (MetaFrames *frames, - Window xwindow, - float *top_left, - float *top_right, - float *bottom_left, - float *bottom_right) -{ - MetaUIFrame *frame; - - frame = meta_frames_lookup_window (frames, xwindow); - - meta_ui_frame_get_corner_radiuses (frames, frame, top_left, top_right, - bottom_left, bottom_right); -} - -void meta_frames_reset_bg (MetaFrames *frames, Window xwindow) { @@ -1851,6 +1835,102 @@ clip_region_to_visible_frame_border (cairo_region_t *region, cairo_region_destroy (frame_border); } +#define TAU (2*M_PI) + +/* + * Draw the opaque and semi-opaque pixels of this frame into a mask. + * + * (0,0) in Cairo coordinates is assumed to be the top left corner of the + * invisible border. + * + * The parts of @cr's surface in the clip region are assumed to be + * initialized to fully-transparent, and the clip region is assumed to + * contain the invisible border and the visible parts of the frame, but + * not the client area. + * + * This function uses @cr to draw pixels of arbitrary color (it will + * typically be drawing in a %CAIRO_FORMAT_A8 surface, so the color is + * discarded anyway) with appropriate alpha values to reproduce this + * frame's alpha channel, as a mask to be applied to an opaque pixmap. + * + * @frame: This frame + * @xwindow: The X window for the frame, which has the client window as a child + * @width: The width of the framed window including any invisible borders + * @height: The height of the framed window including any invisible borders + * @cr: Used to draw the resulting mask + */ +void +meta_frames_get_mask (MetaFrames *frames, + Window xwindow, + guint width, + guint height, + cairo_t *cr) +{ + MetaUIFrame *frame = meta_frames_lookup_window (frames, xwindow); + float top_left, top_right, bottom_left, bottom_right; + int x, y; + MetaFrameBorders borders; + + if (frame == NULL) + meta_bug ("No such frame 0x%lx\n", xwindow); + + cairo_save (cr); + + meta_ui_frame_get_borders (frames, frame, &borders); + meta_ui_frame_get_corner_radiuses (frames, frame, + &top_left, &top_right, + &bottom_left, &bottom_right); + + /* top left */ + x = borders.invisible.left; + y = borders.invisible.top; + + cairo_arc (cr, + x + top_left, + y + top_left, + top_left, + 2 * TAU / 4, + 3 * TAU / 4); + + /* top right */ + x = width - borders.invisible.right - top_right; + y = borders.invisible.top; + + cairo_arc (cr, + x, + y + top_right, + top_right, + 3 * TAU / 4, + 4 * TAU / 4); + + /* bottom right */ + x = width - borders.invisible.right - bottom_right; + y = height - borders.invisible.bottom - bottom_right; + + cairo_arc (cr, + x, + y, + bottom_right, + 0 * TAU / 4, + 1 * TAU / 4); + + /* bottom left */ + x = borders.invisible.left; + y = height - borders.invisible.bottom - bottom_left; + + cairo_arc (cr, + x + bottom_left, + y, + bottom_left, + 1 * TAU / 4, + 2 * TAU / 4); + + cairo_set_source_rgba (cr, 1, 1, 1, 1); + cairo_fill (cr); + + cairo_restore (cr); +} + static gboolean meta_frames_draw (GtkWidget *widget, cairo_t *cr) diff --git a/src/ui/frames.h b/src/ui/frames.h index be238a84b..3298fc2cf 100644 --- a/src/ui/frames.h +++ b/src/ui/frames.h @@ -140,12 +140,11 @@ cairo_region_t *meta_frames_get_frame_bounds (MetaFrames *frames, int window_width, int window_height); -void meta_frames_get_corner_radiuses (MetaFrames *frames, - Window xwindow, - float *top_left, - float *top_right, - float *bottom_left, - float *bottom_right); +void meta_frames_get_mask (MetaFrames *frames, + Window xwindow, + guint width, + guint height, + cairo_t *cr); void meta_frames_move_resize_frame (MetaFrames *frames, Window xwindow, diff --git a/src/ui/ui.c b/src/ui/ui.c index af28263be..c0c819e68 100644 --- a/src/ui/ui.c +++ b/src/ui/ui.c @@ -325,6 +325,16 @@ meta_ui_free (MetaUI *ui) } void +meta_ui_get_frame_mask (MetaUI *ui, + Window frame_xwindow, + guint width, + guint height, + cairo_t *cr) +{ + meta_frames_get_mask (ui->frames, frame_xwindow, width, height, cr); +} + +void meta_ui_get_frame_borders (MetaUI *ui, Window frame_xwindow, MetaFrameBorders *borders) @@ -333,19 +343,6 @@ meta_ui_get_frame_borders (MetaUI *ui, borders); } -void -meta_ui_get_corner_radiuses (MetaUI *ui, - Window xwindow, - float *top_left, - float *top_right, - float *bottom_left, - float *bottom_right) -{ - meta_frames_get_corner_radiuses (ui->frames, xwindow, - top_left, top_right, - bottom_left, bottom_right); -} - Window meta_ui_create_frame_window (MetaUI *ui, Display *xdisplay, diff --git a/src/ui/ui.h b/src/ui/ui.h index 4a510b5c7..2ea3ca12c 100644 --- a/src/ui/ui.h +++ b/src/ui/ui.h @@ -66,6 +66,13 @@ void meta_ui_theme_get_frame_borders (MetaUI *ui, void meta_ui_get_frame_borders (MetaUI *ui, Window frame_xwindow, MetaFrameBorders *borders); + +void meta_ui_get_frame_mask (MetaUI *ui, + Window frame_xwindow, + guint width, + guint height, + cairo_t *cr); + Window meta_ui_create_frame_window (MetaUI *ui, Display *xdisplay, Visual *xvisual, @@ -102,13 +109,6 @@ cairo_region_t *meta_ui_get_frame_bounds (MetaUI *ui, int window_width, int window_height); -void meta_ui_get_corner_radiuses (MetaUI *ui, - Window xwindow, - float *top_left, - float *top_right, - float *bottom_left, - float *bottom_right); - void meta_ui_queue_frame_draw (MetaUI *ui, Window xwindow); |