/* When there are multiple monitors with different resolutions, the visible area
* within the root window may not be rectangular (it may have an L-shape, for
* example). In that case, mask out the areas of the root window which would
* not be visible in the monitors, so that screenshot do not end up with content
* that the user won't ever see.
*/
static void
mask_monitors (GdkPixbuf *pixbuf, GdkWindow *root_window)
{
GdkScreen *screen;
cairo_region_t *region_with_monitors;
cairo_region_t *invisible_region;
cairo_rectangle_int_t rect;
screen = gdk_window_get_screen (root_window);
region_with_monitors = make_region_with_monitors (screen);
rect.x = 0;
rect.y = 0;
rect.width = gdk_screen_get_width (screen);
rect.height = gdk_screen_get_height (screen);
invisible_region = cairo_region_create_rectangle (&rect);
cairo_region_subtract (invisible_region, region_with_monitors);
blank_region_in_pixbuf (pixbuf, invisible_region);
cairo_region_destroy (region_with_monitors);
cairo_region_destroy (invisible_region);
}
void
meta_tile_preview_show (MetaTilePreview *preview,
MetaRectangle *tile_rect)
{
GdkWindow *window;
GdkRectangle old_rect;
if (gtk_widget_get_visible (preview->preview_window)
&& preview->tile_rect.x == tile_rect->x
&& preview->tile_rect.y == tile_rect->y
&& preview->tile_rect.width == tile_rect->width
&& preview->tile_rect.height == tile_rect->height)
return; /* nothing to do */
gtk_widget_show (preview->preview_window);
window = gtk_widget_get_window (preview->preview_window);
meta_core_lower_beneath_grab_window (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
GDK_WINDOW_XID (window),
gtk_get_current_event_time ());
old_rect.x = old_rect.y = 0;
old_rect.width = preview->tile_rect.width;
old_rect.height = preview->tile_rect.height;
gdk_window_invalidate_rect (window, &old_rect, FALSE);
preview->tile_rect = *tile_rect;
gdk_window_move_resize (window,
preview->tile_rect.x, preview->tile_rect.y,
preview->tile_rect.width, preview->tile_rect.height);
if (!preview->has_alpha)
{
cairo_region_t *outer_region, *inner_region;
GdkRectangle outer_rect, inner_rect;
GdkRGBA black = { 0.0, 0.0, 0.0, 1.0 };
gdk_window_set_background_rgba (window, &black);
outer_rect.x = outer_rect.y = 0;
outer_rect.width = preview->tile_rect.width;
outer_rect.height = preview->tile_rect.height;
inner_rect.x = OUTLINE_WIDTH;
inner_rect.y = OUTLINE_WIDTH;
inner_rect.width = outer_rect.width - 2 * OUTLINE_WIDTH;
inner_rect.height = outer_rect.height - 2 * OUTLINE_WIDTH;
outer_region = cairo_region_create_rectangle (&outer_rect);
inner_region = cairo_region_create_rectangle (&inner_rect);
cairo_region_subtract (outer_region, inner_region);
cairo_region_destroy (inner_region);
gdk_window_shape_combine_region (window, outer_region, 0, 0);
cairo_region_destroy (outer_region);
}
}
// cairo_public cairo_status_t
// cairo_region_subtract (cairo_region_t *dst, const cairo_region_t *other);
static int l_cairo_region_subtract (lua_State* L)
{
cairo_region_t *dst = get_cairo_region_t (L, 1);
const cairo_region_t *other = get_cairo_region_t (L, 2);
cairo_status_t v = cairo_region_subtract (dst, other);
lua_pushinteger(L, v);
return 1;
}
static void
resize(JoyBubble *self, gint width, gint height)
{
struct Private *priv = GET_PRIVATE(self);
if (G_LIKELY(priv->surface)) {
cairo_surface_destroy(priv->surface);
priv->surface = NULL;
priv->image = NULL;
}
cairo_region_subtract(priv->area, priv->area);
JOY_BUBBLE_CLASS(joy_gfx3d_window_parent_class)->
resize(self, width, height);
}
JOY_GNUC_HOT
static void
submit(JoyScreen *self)
{
struct Private *priv = GET_PRIVATE(self);
// update cursor
if (priv->cursor && priv->moved) {
GFX3D_Cursor_Position_Set(priv->cursor,
priv->x - priv->x_hot,
priv->y - priv->y_hot);
}
// clear exposed areas of the frame buffer
cairo_region_intersect(priv->expose, priv->area);
for (gint i = 0; i < cairo_region_num_rectangles(priv->expose); ++i) {
cairo_rectangle_int_t rect;
cairo_region_get_rectangle(priv->expose, i, &rect);
GFX3D_Display_ClearAlpha2D(priv->display, NULL,
(gpointer)&rect, 0., 0., 0., 0.);
g_array_append_val(priv->rects, rect);
}
if (priv->rects->len) {
cairo_region_subtract(priv->expose, priv->expose);
#if !CAIRO_HAS_GFX3D_SURFACE
GFX3D_Display_Cache_Flush(priv->display);
#endif // !CAIRO_HAS_GFX3D_SURFACE
GFX3D_NATIVE_Display display =
GFX3D_Display_Get_NATIVE_Display(priv->display);
GFX3D_NATIVE_Surface surface =
GFX3D_Display_FrameBuffer_Get_NATIVE_Surface(
priv->display);
// copy windows to the frame buffer
for (GList *node = g_queue_peek_head_link(priv->windows);
node; node = node->next) {
JoyBubble *window = node->data;
joy_gfx3d_window_submit(window, display, surface,
priv->area);
}
// flip the display
GFX3D_Display_Show_Partial(priv->display,
(gpointer)priv->rects->data,
priv->rects->len, 1);
g_array_set_size(priv->rects, 0);
} else {
if (priv->moved && priv->cursor) {
GFX3D_Display_Show_Ch_Reload(priv->cursor);
}
}
priv->moved = FALSE;
}
bool wxRegion::DoSubtract( const wxRegion& region )
{
if (region.m_refData == NULL || m_refData == NULL)
return false;
AllocExclusive();
#ifdef __WXGTK3__
cairo_region_subtract(M_REGIONDATA->m_region, M_REGIONDATA_OF(region)->m_region);
#else
gdk_region_subtract( M_REGIONDATA->m_region, region.GetRegion() );
#endif
return true;
}
void ChromeClient::scroll(const IntSize& delta, const IntRect& rectToScroll, const IntRect& clipRect)
{
GdkWindow* window = gtk_widget_get_window(GTK_WIDGET(m_webView));
if (!window)
return;
m_pendingScrollInvalidations = true;
// We cannot use gdk_window_scroll here because it is only able to
// scroll the whole window at once, and we often need to scroll
// portions of the window only (think frames).
GdkRectangle area = clipRect;
GdkRectangle moveRect;
GdkRectangle sourceRect = area;
sourceRect.x -= delta.width();
sourceRect.y -= delta.height();
#ifdef GTK_API_VERSION_2
GdkRegion* invalidRegion = gdk_region_rectangle(&area);
if (gdk_rectangle_intersect(&area, &sourceRect, &moveRect)) {
GdkRegion* moveRegion = gdk_region_rectangle(&moveRect);
gdk_window_move_region(window, moveRegion, delta.width(), delta.height());
gdk_region_offset(moveRegion, delta.width(), delta.height());
gdk_region_subtract(invalidRegion, moveRegion);
gdk_region_destroy(moveRegion);
}
gdk_window_invalidate_region(window, invalidRegion, FALSE);
gdk_region_destroy(invalidRegion);
#else
cairo_region_t* invalidRegion = cairo_region_create_rectangle(&area);
if (gdk_rectangle_intersect(&area, &sourceRect, &moveRect)) {
cairo_region_t* moveRegion = cairo_region_create_rectangle(&moveRect);
gdk_window_move_region(window, moveRegion, delta.width(), delta.height());
cairo_region_translate(moveRegion, delta.width(), delta.height());
cairo_region_subtract(invalidRegion, moveRegion);
cairo_region_destroy(moveRegion);
}
gdk_window_invalidate_region(window, invalidRegion, FALSE);
cairo_region_destroy(invalidRegion);
#endif
}
/* Drill the window in the area where the ardesia bar is located. */
void
drill_window_in_bar_area (GtkWidget *widget)
{
GtkWidget *bar= get_bar_window ();
gint x, y, width, height;
gtk_window_get_position (GTK_WINDOW (bar), &x, &y);
gtk_window_get_size (GTK_WINDOW (bar), &width, &height);
const cairo_rectangle_int_t widget_rect = { x+1, y+1, width-1, height-1 };
cairo_region_t *widget_reg = cairo_region_create_rectangle (&widget_rect);
const cairo_rectangle_int_t ann_rect = { 0, 0, gdk_screen_width (), gdk_screen_height () };
cairo_region_t *ann_reg = cairo_region_create_rectangle (&ann_rect);
cairo_region_subtract (ann_reg, widget_reg);
gtk_widget_input_shape_combine_region (widget, ann_reg);
cairo_region_destroy (ann_reg);
cairo_region_destroy (widget_reg);
}
static cairo_region_t *
gimp_canvas_passe_partout_get_extents (GimpCanvasItem *item)
{
GimpDisplayShell *shell = gimp_canvas_item_get_shell (item);
cairo_rectangle_int_t rectangle;
cairo_region_t *inner;
cairo_region_t *outer;
rectangle.x = - shell->offset_x;
rectangle.y = - shell->offset_y;
gimp_display_shell_scale_get_image_size (shell,
&rectangle.width,
&rectangle.height);
outer = cairo_region_create_rectangle (&rectangle);
inner = GIMP_CANVAS_ITEM_CLASS (parent_class)->get_extents (item);
cairo_region_subtract (outer, inner);
return outer;
}
void
_gdk_x11_window_process_expose (GdkWindow *window,
gulong serial,
GdkRectangle *area)
{
cairo_region_t *invalidate_region = cairo_region_create_rectangle (area);
GdkX11Display *display_x11 = GDK_X11_DISPLAY (GDK_WINDOW_DISPLAY (window));
if (display_x11->translate_queue)
{
GList *tmp_list = display_x11->translate_queue->head;
while (tmp_list)
{
GdkWindowQueueItem *item = tmp_list->data;
GList *next = tmp_list->next;
/* an overflow-safe (serial < item->serial) */
if (serial - item->serial > (gulong) G_MAXLONG)
{
if (item->window == window)
cairo_region_subtract (invalidate_region, item->antiexpose_area);
}
else
{
queue_delete_link (display_x11->translate_queue, tmp_list);
queue_item_free (item);
}
tmp_list = next;
}
}
if (!cairo_region_is_empty (invalidate_region))
_gdk_window_invalidate_for_expose (window, invalidate_region);
cairo_region_destroy (invalidate_region);
}
static cairo_status_t
_combine_region (cairo_surface_t *surface,
const cairo_region_t *region,
const cairo_rectangle_int_t *extents)
{
cairo_region_t clear_region;
cairo_status_t status;
_cairo_region_init_rectangle (&clear_region, extents);
status = cairo_region_subtract (&clear_region, region);
if (unlikely (status))
return status;
if (! cairo_region_is_empty (&clear_region)) {
cairo_region_translate (&clear_region, -extents->x, -extents->y);
status = _cairo_surface_fill_region (surface,
CAIRO_OPERATOR_CLEAR,
CAIRO_COLOR_TRANSPARENT,
&clear_region);
}
_cairo_region_fini (&clear_region);
return status;
}
JOY_GNUC_HOT
void
joy_gfx3d_window_submit(JoyBubble *self, GFX3D_NATIVE_Display display,
GFX3D_NATIVE_Surface fb, cairo_region_t *area)
{
g_return_if_fail(JOY_IS_GFX3D_WINDOW(self));
g_return_if_fail(display);
g_return_if_fail(fb);
struct Private *priv = GET_PRIVATE(self);
if (G_UNLIKELY(!priv->image)) {
return;
}
gint x = joy_bubble_get_x(self);
gint y = joy_bubble_get_y(self);
cairo_region_intersect(priv->expose, priv->area);
cairo_region_intersect(priv->expose, area);
if (cairo_region_is_empty(priv->expose)) {
return;
}
GFX3D_NATIVE_Surface surface =
GFX3D_Image_Get_NATIVE_Surface(priv->image);
gint n = cairo_region_num_rectangles(priv->expose);
gdouble alpha = joy_bubble_get_alpha(self);
if (1. == alpha) {
GFX3D_NATIVE_Blit_Blend_Generic_Parms_t parameters = {
{
GFX3D_NATIVE_BLIT_BLEND_CONST_eOne,
GFX3D_NATIVE_BLIT_BLEND_CONST_eSourceColor,
0,
GFX3D_NATIVE_BLIT_BLEND_CONST_eDestinationColor,
GFX3D_NATIVE_BLIT_BLEND_CONST_eInverseSourceAlpha,
0,
GFX3D_NATIVE_BLIT_BLEND_CONST_eZero
},
{
GFX3D_NATIVE_BLIT_BLEND_CONST_eOne,
GFX3D_NATIVE_BLIT_BLEND_CONST_eSourceAlpha,
0,
GFX3D_NATIVE_BLIT_BLEND_CONST_eDestinationAlpha,
GFX3D_NATIVE_BLIT_BLEND_CONST_eInverseSourceAlpha,
0,
GFX3D_NATIVE_BLIT_BLEND_CONST_eZero,
},
0,
0,
0,
GFX3D_NATIVE_BLIT_FilterCoeffs_eNone,
GFX3D_NATIVE_BLIT_FilterCoeffs_eNone,
0,
0
};
for (gint i = 0; i < n; ++i) {
cairo_rectangle_int_t rect;
cairo_region_get_rectangle(priv->expose, i, &rect);
GFX3D_NATIVE_Rect dst = {
rect.x + x,
rect.y + y,
rect.width,
rect.height
};
GFX3D_NATIVE_Blit_Blend_Generic(display,
fb, &dst,
surface, (gpointer)&rect,
fb, &dst,
¶meters);
}
} else {
GFX3D_NATIVE_Blit_Blend_Generic_Parms_t parameters = {
{
GFX3D_NATIVE_BLIT_BLEND_CONST_eConstantAlpha,
GFX3D_NATIVE_BLIT_BLEND_CONST_eSourceColor,
0,
GFX3D_NATIVE_BLIT_BLEND_CONST_eDestinationColor,
GFX3D_NATIVE_BLIT_BLEND_CONST_eInverseSourceAlpha,
0,
GFX3D_NATIVE_BLIT_BLEND_CONST_eZero
},
{
GFX3D_NATIVE_BLIT_BLEND_CONST_eOne,
GFX3D_NATIVE_BLIT_BLEND_CONST_eSourceAlpha,
0,
GFX3D_NATIVE_BLIT_BLEND_CONST_eDestinationAlpha,
GFX3D_NATIVE_BLIT_BLEND_CONST_eInverseSourceAlpha,
0,
GFX3D_NATIVE_BLIT_BLEND_CONST_eZero,
},
(gint)(0xff * alpha) << 24,
0,
0,
GFX3D_NATIVE_BLIT_FilterCoeffs_eNone,
GFX3D_NATIVE_BLIT_FilterCoeffs_eNone,
0,
0
};
for (gint i = 0; i < n; ++i) {
cairo_rectangle_int_t rect;
cairo_region_get_rectangle(priv->expose, i, &rect);
GFX3D_NATIVE_Rect dst = {
rect.x + x,
rect.y + y,
rect.width,
rect.height
};
GFX3D_NATIVE_Blit_Blend_Generic(display,
fb, &dst,
surface, (gpointer)&rect,
fb, &dst,
¶meters);
}
}
cairo_region_subtract(priv->expose, priv->expose);
}
void
_gtk_pixel_cache_set_position (GtkPixelCache *cache,
cairo_rectangle_int_t *view_rect,
cairo_rectangle_int_t *canvas_rect)
{
cairo_rectangle_int_t r, view_pos;
cairo_region_t *copy_region;
int new_surf_x, new_surf_y;
cairo_t *backing_cr;
if (cache->surface == NULL)
return;
/* Position of view inside canvas */
view_pos.x = -canvas_rect->x;
view_pos.y = -canvas_rect->y;
view_pos.width = view_rect->width;
view_pos.height = view_rect->height;
/* Reposition so all is visible */
if (view_pos.x < cache->surface_x ||
view_pos.x + view_pos.width >
cache->surface_x + cache->surface_w ||
view_pos.y < cache->surface_y ||
view_pos.y + view_pos.height >
cache->surface_y + cache->surface_h)
{
new_surf_x = cache->surface_x;
if (view_pos.x < cache->surface_x)
new_surf_x = MAX (view_pos.x + view_pos.width - cache->surface_w, 0);
else if (view_pos.x + view_pos.width >
cache->surface_x + cache->surface_w)
new_surf_x = MIN (view_pos.x, canvas_rect->width - cache->surface_w);
new_surf_y = cache->surface_y;
if (view_pos.y < cache->surface_y)
new_surf_y = MAX (view_pos.y + view_pos.height - cache->surface_h, 0);
else if (view_pos.y + view_pos.height >
cache->surface_y + cache->surface_h)
new_surf_y = MIN (view_pos.y, canvas_rect->height - cache->surface_h);
r.x = 0;
r.y = 0;
r.width = cache->surface_w;
r.height = cache->surface_h;
copy_region = cairo_region_create_rectangle (&r);
if (cache->surface_dirty)
{
cairo_region_subtract (copy_region, cache->surface_dirty);
cairo_region_destroy (cache->surface_dirty);
cache->surface_dirty = NULL;
}
cairo_region_translate (copy_region,
cache->surface_x - new_surf_x,
cache->surface_y - new_surf_y);
cairo_region_intersect_rectangle (copy_region, &r);
backing_cr = cairo_create (cache->surface);
gdk_cairo_region (backing_cr, copy_region);
cairo_set_operator (backing_cr, CAIRO_OPERATOR_SOURCE);
cairo_clip (backing_cr);
cairo_push_group (backing_cr);
cairo_set_source_surface (backing_cr, cache->surface,
cache->surface_x - new_surf_x,
cache->surface_y - new_surf_y);
cairo_paint (backing_cr);
cairo_pop_group_to_source (backing_cr);
cairo_paint (backing_cr);
cairo_destroy (backing_cr);
cache->surface_x = new_surf_x;
cache->surface_y = new_surf_y;
cairo_region_xor_rectangle (copy_region, &r);
cache->surface_dirty = copy_region;
}
}
/**
* gdk_cairo_draw_from_gl:
* @cr: a cairo context
* @window: The window we're rendering for (not necessarily into)
* @source: The GL ID of the source buffer
* @source_type: The type of the @source
* @buffer_scale: The scale-factor that the @source buffer is allocated for
* @x: The source x position in @source to start copying from in GL coordinates
* @y: The source y position in @source to start copying from in GL coordinates
* @width: The width of the region to draw
* @height: The height of the region to draw
*
* This is the main way to draw GL content in GTK+. It takes a render buffer ID
* (@source_type == #GL_RENDERBUFFER) or a texture id (@source_type == #GL_TEXTURE)
* and draws it onto @cr with an OVER operation, respecting the current clip.
* The top left corner of the rectangle specified by @x, @y, @width and @height
* will be drawn at the current (0,0) position of the cairo_t.
*
* This will work for *all* cairo_t, as long as @window is realized, but the
* fallback implementation that reads back the pixels from the buffer may be
* used in the general case. In the case of direct drawing to a window with
* no special effects applied to @cr it will however use a more efficient
* approach.
*
* For #GL_RENDERBUFFER the code will always fall back to software for buffers
* with alpha components, so make sure you use #GL_TEXTURE if using alpha.
*
* Calling this may change the current GL context.
*
* Since: 3.16
*/
void
gdk_cairo_draw_from_gl (cairo_t *cr,
GdkWindow *window,
int source,
int source_type,
int buffer_scale,
int x,
int y,
int width,
int height)
{
GdkGLContext *paint_context;
cairo_surface_t *image;
cairo_matrix_t matrix;
int dx, dy, window_scale;
gboolean trivial_transform;
cairo_surface_t *group_target;
GdkWindow *direct_window, *impl_window;
guint framebuffer;
int alpha_size = 0;
cairo_region_t *clip_region;
GdkGLContextPaintData *paint_data;
impl_window = window->impl_window;
window_scale = gdk_window_get_scale_factor (impl_window);
paint_context = gdk_window_get_paint_gl_context (window, NULL);
if (paint_context == NULL)
{
g_warning ("gdk_cairo_draw_gl_render_buffer failed - no paint context");
return;
}
clip_region = gdk_cairo_region_from_clip (cr);
gdk_gl_context_make_current (paint_context);
paint_data = gdk_gl_context_get_paint_data (paint_context);
if (paint_data->tmp_framebuffer == 0)
glGenFramebuffersEXT (1, &paint_data->tmp_framebuffer);
if (source_type == GL_RENDERBUFFER)
{
glBindRenderbuffer (GL_RENDERBUFFER, source);
glGetRenderbufferParameteriv (GL_RENDERBUFFER, GL_RENDERBUFFER_ALPHA_SIZE, &alpha_size);
}
else if (source_type == GL_TEXTURE)
{
glBindTexture (GL_TEXTURE_2D, source);
glGetTexLevelParameteriv (GL_TEXTURE_2D, 0, GL_TEXTURE_ALPHA_SIZE, &alpha_size);
}
else
{
g_warning ("Unsupported gl source type %d\n", source_type);
return;
}
group_target = cairo_get_group_target (cr);
direct_window = cairo_surface_get_user_data (group_target, &direct_key);
cairo_get_matrix (cr, &matrix);
dx = matrix.x0;
dy = matrix.y0;
/* Trivial == integer-only translation */
trivial_transform =
(double)dx == matrix.x0 && (double)dy == matrix.y0 &&
matrix.xx == 1.0 && matrix.xy == 0.0 &&
matrix.yx == 0.0 && matrix.yy == 1.0;
/* For direct paint of non-alpha renderbuffer, we can
just do a bitblit */
if ((_gdk_gl_flags & GDK_GL_SOFTWARE_DRAW_GL) == 0 &&
source_type == GL_RENDERBUFFER &&
alpha_size == 0 &&
direct_window != NULL &&
direct_window->current_paint.use_gl &&
trivial_transform &&
clip_region != NULL)
{
int unscaled_window_height;
int i;
/* Create a framebuffer with the source renderbuffer and
make it the current target for reads */
framebuffer = paint_data->tmp_framebuffer;
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, framebuffer);
glFramebufferRenderbufferEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_RENDERBUFFER_EXT, source);
glBindFramebufferEXT (GL_DRAW_FRAMEBUFFER_EXT, 0);
/* Translate to impl coords */
cairo_region_translate (clip_region, dx, dy);
glEnable (GL_SCISSOR_TEST);
gdk_window_get_unscaled_size (impl_window, NULL, &unscaled_window_height);
glDrawBuffer (GL_BACK);
#define FLIP_Y(_y) (unscaled_window_height - (_y))
for (i = 0; i < cairo_region_num_rectangles (clip_region); i++)
{
cairo_rectangle_int_t clip_rect, dest;
cairo_region_get_rectangle (clip_region, i, &clip_rect);
clip_rect.x *= window_scale;
clip_rect.y *= window_scale;
clip_rect.width *= window_scale;
clip_rect.height *= window_scale;
glScissor (clip_rect.x, FLIP_Y (clip_rect.y + clip_rect.height),
clip_rect.width, clip_rect.height);
dest.x = dx * window_scale;
dest.y = dy * window_scale;
dest.width = width * window_scale / buffer_scale;
dest.height = height * window_scale / buffer_scale;
if (gdk_rectangle_intersect (&clip_rect, &dest, &dest))
{
int clipped_src_x = x + (dest.x - dx * window_scale);
int clipped_src_y = y + (height - dest.height - (dest.y - dy * window_scale));
glBlitFramebufferEXT(clipped_src_x, clipped_src_y,
(clipped_src_x + dest.width), (clipped_src_y + dest.height),
dest.x, FLIP_Y(dest.y + dest.height),
dest.x + dest.width, FLIP_Y(dest.y),
GL_COLOR_BUFFER_BIT, GL_NEAREST);
if (impl_window->current_paint.flushed_region)
{
cairo_rectangle_int_t flushed_rect;
flushed_rect.x = dest.x / window_scale;
flushed_rect.y = dest.y / window_scale;
flushed_rect.width = (dest.x + dest.width + window_scale - 1) / window_scale - flushed_rect.x;
flushed_rect.height = (dest.y + dest.height + window_scale - 1) / window_scale - flushed_rect.y;
cairo_region_union_rectangle (impl_window->current_paint.flushed_region,
&flushed_rect);
cairo_region_subtract_rectangle (impl_window->current_paint.need_blend_region,
&flushed_rect);
}
}
}
glDisable (GL_SCISSOR_TEST);
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, 0);
#undef FLIP_Y
}
/* For direct paint of alpha or non-alpha textures we can use texturing */
else if ((_gdk_gl_flags & GDK_GL_SOFTWARE_DRAW_GL) == 0 &&
source_type == GL_TEXTURE &&
direct_window != NULL &&
direct_window->current_paint.use_gl &&
trivial_transform &&
clip_region != NULL)
{
int unscaled_window_height;
GLint texture_width;
GLint texture_height;
int i, n_rects, n_quads;
GdkTexturedQuad *quads;
cairo_rectangle_int_t clip_rect;
/* Translate to impl coords */
cairo_region_translate (clip_region, dx, dy);
if (alpha_size != 0)
{
cairo_region_t *opaque_region, *blend_region;
opaque_region = cairo_region_copy (clip_region);
cairo_region_subtract (opaque_region, impl_window->current_paint.flushed_region);
cairo_region_subtract (opaque_region, impl_window->current_paint.need_blend_region);
if (!cairo_region_is_empty (opaque_region))
gdk_gl_texture_from_surface (impl_window->current_paint.surface,
opaque_region);
blend_region = cairo_region_copy (clip_region);
cairo_region_intersect (blend_region, impl_window->current_paint.need_blend_region);
glEnable (GL_BLEND);
if (!cairo_region_is_empty (blend_region))
gdk_gl_texture_from_surface (impl_window->current_paint.surface,
blend_region);
cairo_region_destroy (opaque_region);
cairo_region_destroy (blend_region);
}
glBindTexture (GL_TEXTURE_2D, source);
glGetTexLevelParameteriv (GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &texture_width);
glGetTexLevelParameteriv (GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &texture_height);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glEnable (GL_SCISSOR_TEST);
gdk_window_get_unscaled_size (impl_window, NULL, &unscaled_window_height);
#define FLIP_Y(_y) (unscaled_window_height - (_y))
cairo_region_get_extents (clip_region, &clip_rect);
glScissor (clip_rect.x * window_scale, FLIP_Y ((clip_rect.y + clip_rect.height) * window_scale),
clip_rect.width * window_scale, clip_rect.height * window_scale);
n_quads = 0;
n_rects = cairo_region_num_rectangles (clip_region);
quads = g_new (GdkTexturedQuad, n_rects);
for (i = 0; i < n_rects; i++)
{
cairo_rectangle_int_t dest;
cairo_region_get_rectangle (clip_region, i, &clip_rect);
clip_rect.x *= window_scale;
clip_rect.y *= window_scale;
clip_rect.width *= window_scale;
clip_rect.height *= window_scale;
dest.x = dx * window_scale;
dest.y = dy * window_scale;
dest.width = width * window_scale / buffer_scale;
dest.height = height * window_scale / buffer_scale;
if (gdk_rectangle_intersect (&clip_rect, &dest, &dest))
{
int clipped_src_x = x + (dest.x - dx * window_scale);
int clipped_src_y = y + (height - dest.height - (dest.y - dy * window_scale));
GdkTexturedQuad quad = {
dest.x, FLIP_Y(dest.y),
dest.x + dest.width, FLIP_Y(dest.y + dest.height),
clipped_src_x / (float)texture_width, (clipped_src_y + dest.height) / (float)texture_height,
(clipped_src_x + dest.width) / (float)texture_width, clipped_src_y / (float)texture_height,
};
quads[n_quads++] = quad;
if (impl_window->current_paint.flushed_region)
{
cairo_rectangle_int_t flushed_rect;
flushed_rect.x = dest.x / window_scale;
flushed_rect.y = dest.y / window_scale;
flushed_rect.width = (dest.x + dest.width + window_scale - 1) / window_scale - flushed_rect.x;
flushed_rect.height = (dest.y + dest.height + window_scale - 1) / window_scale - flushed_rect.y;
cairo_region_union_rectangle (impl_window->current_paint.flushed_region,
&flushed_rect);
cairo_region_subtract_rectangle (impl_window->current_paint.need_blend_region,
&flushed_rect);
}
}
}
if (n_quads > 0)
gdk_gl_texture_quads (paint_context, GL_TEXTURE_2D, n_quads, quads);
g_free (quads);
if (alpha_size != 0)
glDisable (GL_BLEND);
#undef FLIP_Y
}
else
{
/* Software fallback */
/* TODO: avoid reading back non-required data due to dest clip */
image = cairo_surface_create_similar_image (cairo_get_target (cr),
(alpha_size == 0) ? CAIRO_FORMAT_RGB24 : CAIRO_FORMAT_ARGB32,
width, height);
cairo_surface_set_device_scale (image, buffer_scale, buffer_scale);
framebuffer = paint_data->tmp_framebuffer;
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, framebuffer);
if (source_type == GL_RENDERBUFFER)
{
/* Create a framebuffer with the source renderbuffer and
make it the current target for reads */
glFramebufferRenderbufferEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_RENDERBUFFER_EXT, source);
}
else
{
glFramebufferTexture2DEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_2D, source, 0);
}
glPixelStorei (GL_PACK_ALIGNMENT, 4);
glPixelStorei (GL_PACK_ROW_LENGTH, cairo_image_surface_get_stride (image) / 4);
glReadPixels (x, y, width, height, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
cairo_image_surface_get_data (image));
glPixelStorei (GL_PACK_ROW_LENGTH, 0);
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, 0);
cairo_surface_mark_dirty (image);
/* Invert due to opengl having different origin */
cairo_scale (cr, 1, -1);
cairo_translate (cr, 0, -height / buffer_scale);
cairo_set_source_surface (cr, image, 0, 0);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_paint (cr);
cairo_surface_destroy (image);
}
if (clip_region)
cairo_region_destroy (clip_region);
}
void FloatingWindow::display(bool startup)
// Does the bookkeeping necessary for displaying the floating box.
// startup: whether the box is started at program startup.
{
// Settings.
extern Settings *settings;
// The parameters of all the windows.
WindowData window_parameters(false);
// Clear the new window's position.
my_gdk_rectangle.x = 0;
my_gdk_rectangle.y = 0;
my_gdk_rectangle.width = 0;
my_gdk_rectangle.height = 0;
// At program startup extract the position and size of the window from the general configuration.
// It does not matter whether the space for the window is already taken up by another window,
// because the user wishes to use the coordinates that he has set for this window.
for (unsigned int i = 0; i < window_parameters.widths.size(); i++) {
if ((window_parameters.ids[i] == window_id) && (window_parameters.titles[i] == title) && startup) {
my_gdk_rectangle.x = window_parameters.x_positions[i];
my_gdk_rectangle.y = window_parameters.y_positions[i];
my_gdk_rectangle.width = window_parameters.widths[i];
my_gdk_rectangle.height = window_parameters.heights[i];
}
}
// Reject zero width and zero height values on startup.
if ((my_gdk_rectangle.width == 0) || (my_gdk_rectangle.height == 0)) {
startup = false;
}
// When a new window needs to be allocated, there are a few steps to be taken.
if (!startup) {
// Step 1: The area rectangle where the window should fit in is defined.
#if GTK_CHECK_VERSION(3,0,0)
GdkRectangle area_rectangle;
#else
cairo_rectangle_int_t area_rectangle;
#endif
area_rectangle.x = 0;
area_rectangle.y = 0;
area_rectangle.width = 0;
area_rectangle.height = 0;
{
guint width, height;
gtk_layout_get_size (GTK_LAYOUT (layout), &width, &height);
area_rectangle.width = width;
area_rectangle.height = height;
}
// Step 2: An available region is made of that whole area.
cairo_region_t *available_region = cairo_region_create_rectangle(&area_rectangle);
// Step 3: The regions of each of the open windows is substracted from the available region.
for (unsigned int i = 0; i < settings->session.open_floating_windows.size(); i++) {
FloatingWindow * floating_window = (FloatingWindow *) settings->session.open_floating_windows[i];
GdkRectangle rectangle = floating_window->rectangle_get();
#if GTK_CHECK_VERSION(3,0,0)
cairo_region_t *region = cairo_region_create_rectangle(&rectangle);
#else
cairo_rectangle_int_t cairo_rectangle = {
rectangle.x, rectangle.y,
rectangle.width, rectangle.height
};
cairo_region_t *region = cairo_region_create_rectangle(&cairo_rectangle);
#endif
cairo_region_subtract(available_region, region);
cairo_region_destroy(region);
}
// Step 4: The rectangles that the area region consists of are requested,
// and the biggest suitable rectangle is chosen for the window.
// A rectangle is considered suitable if it has at least 10% of the width, and 10% of the height of the area rectangle.
gint rectangle_count = cairo_region_num_rectangles(available_region);
for (int i = 0; i < rectangle_count; ++i) {
#if GTK_CHECK_VERSION(3,0,0)
GdkRectangle rectangle;
#else
cairo_rectangle_int_t rectangle;
#endif
cairo_region_get_rectangle(available_region, i, &rectangle);
if (rectangle.width >= (area_rectangle.width / 10)) {
if (rectangle.height >= (area_rectangle.height / 10)) {
if ((rectangle.width * rectangle.height) > (my_gdk_rectangle.width * my_gdk_rectangle.height)) {
#if GTK_CHECK_VERSION(3,0,0)
my_gdk_rectangle = rectangle;
#else
my_gdk_rectangle.x = rectangle.x;
my_gdk_rectangle.y = rectangle.y;
my_gdk_rectangle.width = rectangle.width;
my_gdk_rectangle.height = rectangle.height;
#endif
}
}
}
}
// Step 5: The available region is destroyed.
cairo_region_destroy(available_region);
// Step 6: If no area big enough is found, then the window that takes most space in the area is chosen,
// the longest side is halved, and the new window is put in that freed area.
if ((my_gdk_rectangle.width == 0) || (my_gdk_rectangle.height == 0)) {
FloatingWindow * resize_window_pointer = NULL;
int largest_size = 0;
for (unsigned int i = 0; i < settings->session.open_floating_windows.size(); i++) {
FloatingWindow *floating_window = (FloatingWindow *) settings->session.open_floating_windows[i];
GdkRectangle rectangle = floating_window->rectangle_get ();
int size = rectangle.width * rectangle.height;
if (size > largest_size) {
resize_window_pointer = floating_window;
largest_size = size;
}
}
if (resize_window_pointer) {
GdkRectangle resize_window_rectangle = resize_window_pointer->rectangle_get();
my_gdk_rectangle = resize_window_pointer->rectangle_get();
if (resize_window_rectangle.width > resize_window_rectangle.height) {
resize_window_rectangle.width /= 2;
my_gdk_rectangle.width /= 2;
my_gdk_rectangle.x += resize_window_rectangle.width;
} else {
resize_window_rectangle.height /= 2;
my_gdk_rectangle.height /= 2;
my_gdk_rectangle.y += resize_window_rectangle.height;
}
resize_window_pointer->rectangle_set (resize_window_rectangle);
}
}
}
// Add the window to the layout and set its position and size.
gtk_layout_put (GTK_LAYOUT (layout), vbox_window, my_gdk_rectangle.x, my_gdk_rectangle.y);
rectangle_set (my_gdk_rectangle);
// Store a pointer to this window in the Session.
settings->session.open_floating_windows.push_back(gpointer (this));
}
static void
meta_window_group_paint (ClutterActor *actor)
{
cairo_region_t *visible_region;
cairo_region_t *unredirected_window_region = NULL;
ClutterActor *stage;
cairo_rectangle_int_t visible_rect, unredirected_rect;
GList *children, *l;
MetaWindowGroup *window_group = META_WINDOW_GROUP (actor);
MetaCompScreen *info = meta_screen_get_compositor_data (window_group->screen);
if (info->unredirected_window != NULL)
{
meta_window_actor_get_shape_bounds (META_WINDOW_ACTOR (info->unredirected_window), &unredirected_rect);
unredirected_window_region = cairo_region_create_rectangle (&unredirected_rect);
}
/* We walk the list from top to bottom (opposite of painting order),
* and subtract the opaque area of each window out of the visible
* region that we pass to the windows below.
*/
children = clutter_container_get_children (CLUTTER_CONTAINER (actor));
children = g_list_reverse (children);
/* Get the clipped redraw bounds from Clutter so that we can avoid
* painting shadows on windows that don't need to be painted in this
* frame. In the case of a multihead setup with mismatched monitor
* sizes, we could intersect this with an accurate union of the
* monitors to avoid painting shadows that are visible only in the
* holes. */
stage = clutter_actor_get_stage (actor);
clutter_stage_get_redraw_clip_bounds (CLUTTER_STAGE (stage),
&visible_rect);
visible_region = cairo_region_create_rectangle (&visible_rect);
if (unredirected_window_region)
cairo_region_subtract (visible_region, unredirected_window_region);
for (l = children; l; l = l->next)
{
if (!CLUTTER_ACTOR_IS_VISIBLE (l->data))
continue;
/* If an actor has effects applied, then that can change the area
* it paints and the opacity, so we no longer can figure out what
* portion of the actor is obscured and what portion of the screen
* it obscures, so we skip the actor.
*
* This has a secondary beneficial effect: if a ClutterOffscreenEffect
* is applied to an actor, then our clipped redraws interfere with the
* caching of the FBO - even if we only need to draw a small portion
* of the window right now, ClutterOffscreenEffect may use other portions
* of the FBO later. So, skipping actors with effects applied also
* prevents these bugs.
*
* Theoretically, we should check clutter_actor_get_offscreen_redirect()
* as well for the same reason, but omitted for simplicity in the
* hopes that no-one will do that.
*/
if (clutter_actor_has_effects (l->data))
continue;
if (META_IS_WINDOW_ACTOR (l->data))
{
MetaWindowActor *window_actor = l->data;
int x, y;
if (!actor_is_untransformed (CLUTTER_ACTOR (window_actor), &x, &y))
continue;
/* Temporarily move to the coordinate system of the actor */
cairo_region_translate (visible_region, - x, - y);
meta_window_actor_set_visible_region (window_actor, visible_region);
if (clutter_actor_get_paint_opacity (CLUTTER_ACTOR (window_actor)) == 0xff)
{
cairo_region_t *obscured_region = meta_window_actor_get_obscured_region (window_actor);
if (obscured_region)
cairo_region_subtract (visible_region, obscured_region);
}
meta_window_actor_set_visible_region_beneath (window_actor, visible_region);
cairo_region_translate (visible_region, x, y);
}
else if (META_IS_BACKGROUND_ACTOR (l->data))
{
MetaBackgroundActor *background_actor = l->data;
meta_background_actor_set_visible_region (background_actor, visible_region);
}
}
cairo_region_destroy (visible_region);
if (unredirected_window_region)
cairo_region_destroy (unredirected_window_region);
CLUTTER_ACTOR_CLASS (meta_window_group_parent_class)->paint (actor);
/* Now that we are done painting, unset the visible regions (they will
* mess up painting clones of our actors)
*/
for (l = children; l; l = l->next)
{
if (META_IS_WINDOW_ACTOR (l->data))
{
MetaWindowActor *window_actor = l->data;
window_actor = l->data;
meta_window_actor_reset_visible_regions (window_actor);
}
else if (META_IS_BACKGROUND_ACTOR (l->data))
{
MetaBackgroundActor *background_actor = l->data;
meta_background_actor_set_visible_region (background_actor, NULL);
}
}
g_list_free (children);
}
void
Region::Subtract (Region *region)
{
status = cairo_region_subtract (cairo_region, region->cairo_region);
}
static void
meta_window_group_paint (ClutterActor *actor)
{
cairo_region_t *visible_region;
ClutterActor *stage;
cairo_rectangle_int_t visible_rect;
GList *children, *l;
int paint_x_origin, paint_y_origin;
int actor_x_origin, actor_y_origin;
int paint_x_offset, paint_y_offset;
MetaWindowGroup *window_group = META_WINDOW_GROUP (actor);
MetaCompScreen *info = meta_screen_get_compositor_data (window_group->screen);
/* Normally we expect an actor to be drawn at it's position on the screen.
* However, if we're inside the paint of a ClutterClone, that won't be the
* case and we need to compensate. We look at the position of the window
* group under the current model-view matrix and the position of the actor.
* If they are both simply integer translations, then we can compensate
* easily, otherwise we give up.
*
* Possible cleanup: work entirely in paint space - we can compute the
* combination of the model-view matrix with the local matrix for each child
* actor and get a total transformation for that actor for how we are
* painting currently, and never worry about how actors are positioned
* on the stage.
*/
if (!painting_untransformed (window_group, &paint_x_origin, &paint_y_origin) ||
!meta_actor_is_untransformed (actor, &actor_x_origin, &actor_y_origin))
{
CLUTTER_ACTOR_CLASS (meta_window_group_parent_class)->paint (actor);
return;
}
paint_x_offset = paint_x_origin - actor_x_origin;
paint_y_offset = paint_y_origin - actor_y_origin;
/* We walk the list from top to bottom (opposite of painting order),
* and subtract the opaque area of each window out of the visible
* region that we pass to the windows below.
*/
children = clutter_actor_get_children (actor);
children = g_list_reverse (children);
/* Get the clipped redraw bounds from Clutter so that we can avoid
* painting shadows on windows that don't need to be painted in this
* frame. In the case of a multihead setup with mismatched monitor
* sizes, we could intersect this with an accurate union of the
* monitors to avoid painting shadows that are visible only in the
* holes. */
stage = clutter_actor_get_stage (actor);
clutter_stage_get_redraw_clip_bounds (CLUTTER_STAGE (stage),
&visible_rect);
visible_region = cairo_region_create_rectangle (&visible_rect);
if (info->unredirected_window != NULL)
{
cairo_rectangle_int_t unredirected_rect;
MetaWindow *window = meta_window_actor_get_meta_window (info->unredirected_window);
meta_window_get_outer_rect (window, (MetaRectangle *)&unredirected_rect);
cairo_region_subtract_rectangle (visible_region, &unredirected_rect);
}
for (l = children; l; l = l->next)
{
if (!CLUTTER_ACTOR_IS_VISIBLE (l->data))
continue;
if (l->data == info->unredirected_window)
continue;
/* If an actor has effects applied, then that can change the area
* it paints and the opacity, so we no longer can figure out what
* portion of the actor is obscured and what portion of the screen
* it obscures, so we skip the actor.
*
* This has a secondary beneficial effect: if a ClutterOffscreenEffect
* is applied to an actor, then our clipped redraws interfere with the
* caching of the FBO - even if we only need to draw a small portion
* of the window right now, ClutterOffscreenEffect may use other portions
* of the FBO later. So, skipping actors with effects applied also
* prevents these bugs.
*
* Theoretically, we should check clutter_actor_get_offscreen_redirect()
* as well for the same reason, but omitted for simplicity in the
* hopes that no-one will do that.
*/
if (clutter_actor_has_effects (l->data))
continue;
if (META_IS_WINDOW_ACTOR (l->data))
{
MetaWindowActor *window_actor = l->data;
int x, y;
if (!meta_actor_is_untransformed (CLUTTER_ACTOR (window_actor), &x, &y))
continue;
x += paint_x_offset;
y += paint_y_offset;
/* Temporarily move to the coordinate system of the actor */
cairo_region_translate (visible_region, - x, - y);
meta_window_actor_set_visible_region (window_actor, visible_region);
if (clutter_actor_get_paint_opacity (CLUTTER_ACTOR (window_actor)) == 0xff)
{
cairo_region_t *obscured_region = meta_window_actor_get_obscured_region (window_actor);
if (obscured_region)
cairo_region_subtract (visible_region, obscured_region);
}
meta_window_actor_set_visible_region_beneath (window_actor, visible_region);
cairo_region_translate (visible_region, x, y);
}
else if (META_IS_BACKGROUND_ACTOR (l->data) ||
META_IS_BACKGROUND_GROUP (l->data))
{
ClutterActor *background_actor = l->data;
int x, y;
if (!meta_actor_is_untransformed (CLUTTER_ACTOR (background_actor), &x, &y))
continue;
x += paint_x_offset;
y += paint_y_offset;
cairo_region_translate (visible_region, - x, - y);
if (META_IS_BACKGROUND_GROUP (background_actor))
meta_background_group_set_visible_region (META_BACKGROUND_GROUP (background_actor), visible_region);
else
meta_background_actor_set_visible_region (META_BACKGROUND_ACTOR (background_actor), visible_region);
cairo_region_translate (visible_region, x, y);
}
}
cairo_region_destroy (visible_region);
CLUTTER_ACTOR_CLASS (meta_window_group_parent_class)->paint (actor);
/* Now that we are done painting, unset the visible regions (they will
* mess up painting clones of our actors)
*/
for (l = children; l; l = l->next)
{
if (META_IS_WINDOW_ACTOR (l->data))
{
MetaWindowActor *window_actor = l->data;
meta_window_actor_reset_visible_regions (window_actor);
}
else if (META_IS_BACKGROUND_ACTOR (l->data))
{
MetaBackgroundActor *background_actor = l->data;
meta_background_actor_set_visible_region (background_actor, NULL);
}
}
g_list_free (children);
}
static void
meta_window_group_cull_out (MetaWindowGroup *group,
ClutterActor *unredirected_window,
gboolean has_unredirected_window,
cairo_region_t *unobscured_region,
cairo_region_t *clip_region)
{
ClutterActor *actor = CLUTTER_ACTOR (group);
ClutterActor *child;
ClutterActorIter iter;
/* We walk the list from top to bottom (opposite of painting order),
* and subtract the opaque area of each window out of the visible
* region that we pass to the windows below.
*/
clutter_actor_iter_init (&iter, actor);
while (clutter_actor_iter_prev (&iter, &child))
{
if (!CLUTTER_ACTOR_IS_VISIBLE (child))
continue;
if (has_unredirected_window && child == unredirected_window)
continue;
/* If an actor has effects applied, then that can change the area
* it paints and the opacity, so we no longer can figure out what
* portion of the actor is obscured and what portion of the screen
* it obscures, so we skip the actor.
*
* This has a secondary beneficial effect: if a ClutterOffscreenEffect
* is applied to an actor, then our clipped redraws interfere with the
* caching of the FBO - even if we only need to draw a small portion
* of the window right now, ClutterOffscreenEffect may use other portions
* of the FBO later. So, skipping actors with effects applied also
* prevents these bugs.
*
* Theoretically, we should check clutter_actor_get_offscreen_redirect()
* as well for the same reason, but omitted for simplicity in the
* hopes that no-one will do that.
*/
if (clutter_actor_has_effects (child))
continue;
if (META_IS_WINDOW_ACTOR (child))
{
MetaWindowActor *window_actor = META_WINDOW_ACTOR (child);
int x, y;
if (!meta_actor_is_untransformed (CLUTTER_ACTOR (window_actor), &x, &y))
continue;
/* Temporarily move to the coordinate system of the actor */
cairo_region_translate (unobscured_region, - x, - y);
cairo_region_translate (clip_region, - x, - y);
meta_window_actor_set_unobscured_region (window_actor, unobscured_region);
meta_window_actor_set_visible_region (window_actor, clip_region);
if (clutter_actor_get_paint_opacity (CLUTTER_ACTOR (window_actor)) == 0xff)
{
cairo_region_t *obscured_region = meta_window_actor_get_obscured_region (window_actor);
if (obscured_region)
{
cairo_region_subtract (unobscured_region, obscured_region);
cairo_region_subtract (clip_region, obscured_region);
}
}
meta_window_actor_set_visible_region_beneath (window_actor, clip_region);
cairo_region_translate (unobscured_region, x, y);
cairo_region_translate (clip_region, x, y);
}
else if (META_IS_BACKGROUND_ACTOR (child))
{
int x, y;
if (!meta_actor_is_untransformed (child, &x, &y))
continue;
cairo_region_translate (clip_region, - x, - y);
meta_background_actor_set_visible_region (META_BACKGROUND_ACTOR (child), clip_region);
cairo_region_translate (clip_region, x, y);
}
}
}
/* Warning: This call modifies the coordinates of traps */
static cairo_status_t
_clip_and_composite_trapezoids (const cairo_pattern_t *src,
cairo_operator_t op,
cairo_surface_t *dst,
cairo_traps_t *traps,
cairo_clip_t *clip,
cairo_antialias_t antialias)
{
cairo_status_t status;
cairo_region_t *trap_region = NULL;
cairo_region_t *clear_region = NULL;
cairo_rectangle_int_t extents;
cairo_composite_traps_info_t traps_info;
if (_cairo_operator_bounded_by_mask (op) && traps->num_traps == 0)
return CAIRO_STATUS_SUCCESS;
status = _cairo_surface_get_extents (dst, &extents);
if (unlikely (status))
return status;
status = _cairo_traps_extract_region (traps, &trap_region);
if (status && status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
if (_cairo_operator_bounded_by_mask (op)) {
cairo_rectangle_int_t trap_extents;
if (trap_region) {
status = _cairo_clip_intersect_to_region (clip, trap_region);
if (unlikely (status))
goto out;
cairo_region_get_extents (trap_region, &trap_extents);
} else {
cairo_box_t trap_box;
_cairo_traps_extents (traps, &trap_box);
_cairo_box_round_to_rectangle (&trap_box, &trap_extents);
}
if (! _cairo_rectangle_intersect (&extents, &trap_extents)) {
status = CAIRO_STATUS_SUCCESS;
goto out;
}
status = _cairo_clip_intersect_to_rectangle (clip, &extents);
if (unlikely (status))
goto out;
} else {
cairo_surface_t *clip_surface = clip ? clip->surface : NULL;
if (trap_region && !clip_surface) {
/* If we optimize drawing with an unbounded operator to
* _cairo_surface_fill_rectangles() or to drawing with a
* clip region, then we have an additional region to clear.
*/
clear_region = cairo_region_create_rectangle (&extents);
status = cairo_region_status (clear_region);
if (unlikely (status))
goto out;
status = _cairo_clip_intersect_to_region (clip, clear_region);
if (unlikely (status))
goto out;
cairo_region_get_extents (clear_region, &extents);
status = cairo_region_subtract (clear_region, trap_region);
if (unlikely (status))
goto out;
if (cairo_region_is_empty (clear_region)) {
cairo_region_destroy (clear_region);
clear_region = NULL;
}
} else {
status = _cairo_clip_intersect_to_rectangle (clip, &extents);
}
}
if (unlikely (status))
goto out;
if (trap_region) {
cairo_surface_t *clip_surface = clip ? clip->surface : NULL;
if ((src->type == CAIRO_PATTERN_TYPE_SOLID ||
op == CAIRO_OPERATOR_CLEAR) && !clip_surface) {
const cairo_color_t *color;
if (op == CAIRO_OPERATOR_CLEAR) {
color = CAIRO_COLOR_TRANSPARENT;
} else {
color = &((cairo_solid_pattern_t *)src)->color;
}
/* Solid rectangles special case */
status = _cairo_surface_fill_region (dst, op, color, trap_region);
if (!status && clear_region) {
status = _cairo_surface_fill_region (dst, CAIRO_OPERATOR_CLEAR,
CAIRO_COLOR_TRANSPARENT,
clear_region);
}
goto out;
}
if ((_cairo_operator_bounded_by_mask (op) &&
op != CAIRO_OPERATOR_SOURCE) || !clip_surface) {
/* For a simple rectangle, we can just use composite(), for more
* rectangles, we have to set a clip region. The cost of rasterizing
* trapezoids is pretty high for most backends currently, so it's
* worthwhile even if a region is needed.
*
* If we have a clip surface, we set it as the mask; this only works
* for bounded operators other than SOURCE; for unbounded operators,
* clip and mask cannot be interchanged. For SOURCE, the operator
* as implemented by the backends is different in its handling
* of the mask then what we want.
*
* CAIRO_INT_STATUS_UNSUPPORTED will be returned if the region has
* more than rectangle and the destination doesn't support clip
* regions. In that case, we fall through.
*/
status = _composite_trap_region (clip, src, op, dst,
trap_region, &extents);
if (status != CAIRO_INT_STATUS_UNSUPPORTED) {
if (!status && clear_region)
status = _cairo_surface_fill_region (dst, CAIRO_OPERATOR_CLEAR,
CAIRO_COLOR_TRANSPARENT,
clear_region);
goto out;
}
}
}
traps_info.traps = traps;
traps_info.antialias = antialias;
status = _clip_and_composite (clip, op, src,
_composite_traps_draw_func,
&traps_info, dst, &extents);
out:
if (trap_region)
cairo_region_destroy (trap_region);
if (clear_region)
cairo_region_destroy (clear_region);
return status;
}
static void
_clutter_stage_wayland_repair_dirty(ClutterStageWayland *stage_wayland,
ClutterStage *stage)
{
CoglMaterial *outline = NULL;
CoglHandle vbo;
float vertices[8], texcoords[8];
CoglMatrix modelview;
cairo_region_t *dirty;
cairo_rectangle_int_t rect;
int i, count;
float width, height;
dirty = stage_wayland->back_buffer->dirty_region;
stage_wayland->back_buffer->dirty_region = NULL;
cairo_region_subtract (dirty, stage_wayland->repaint_region);
width = stage_wayland->allocation.width;
height = stage_wayland->allocation.height;
/* If this is the first time we render, there is no front buffer to
* copy back from, but then the dirty region not covered by the
* repaint should be empty, because we repaint the entire stage.
*
* assert(stage_wayland->front_buffer != NULL) ||
* cairo_region_is_empty(dirty);
*
* FIXME: in test-rotate, the stage never queues a full repaint
* initially, it's restricted to the paint box of it's rotating
* children.
*/
if (!stage_wayland->front_buffer)
return;
outline = cogl_material_new ();
cogl_material_set_layer (outline, 0, stage_wayland->front_buffer->tex);
count = cairo_region_num_rectangles (dirty);
for (i = 0; i < count; i++)
{
cairo_region_get_rectangle (dirty, i, &rect);
vbo = cogl_vertex_buffer_new (4);
vertices[0] = rect.x - 1;
vertices[1] = rect.y - 1;
vertices[2] = rect.x + rect.width + 1;
vertices[3] = rect.y - 1;
vertices[4] = rect.x + rect.width + 1;
vertices[5] = rect.y + rect.height + 1;
vertices[6] = rect.x - 1;
vertices[7] = rect.y + rect.height + 1;
cogl_vertex_buffer_add (vbo,
"gl_Vertex",
2, /* n_components */
COGL_ATTRIBUTE_TYPE_FLOAT,
FALSE, /* normalized */
0, /* stride */
vertices);
texcoords[0] = vertices[0] / width;
texcoords[1] = vertices[1] / height;
texcoords[2] = vertices[2] / width;
texcoords[3] = vertices[3] / height;
texcoords[4] = vertices[4] / width;
texcoords[5] = vertices[5] / height;
texcoords[6] = vertices[6] / width;
texcoords[7] = vertices[7] / height;
cogl_vertex_buffer_add (vbo,
"gl_MultiTexCoord0",
2, /* n_components */
COGL_ATTRIBUTE_TYPE_FLOAT,
FALSE, /* normalized */
0, /* stride */
texcoords);
cogl_vertex_buffer_submit (vbo);
cogl_push_matrix ();
cogl_matrix_init_identity (&modelview);
_clutter_actor_apply_modelview_transform (CLUTTER_ACTOR (stage),
&modelview);
cogl_set_modelview_matrix (&modelview);
cogl_set_source (outline);
cogl_vertex_buffer_draw (vbo, COGL_VERTICES_MODE_TRIANGLE_FAN,
0 , 4);
cogl_pop_matrix ();
cogl_object_unref (vbo);
}
cairo_region_destroy (dirty);
}
static void
display_entry (MetaTabPopup *popup,
TabEntry *te)
{
GdkRectangle rect;
GdkWindow *window;
if (popup->current_selected_entry)
{
if (popup->outline)
unselect_image (popup->current_selected_entry->widget);
else
unselect_workspace (popup->current_selected_entry->widget);
}
gtk_label_set_markup (GTK_LABEL (popup->label), te->title);
if (popup->outline)
select_image (te->widget);
else
select_workspace (te->widget);
if (popup->outline)
{
cairo_region_t *region;
cairo_region_t *inner_region;
GdkRGBA black = { 0.0, 0.0, 0.0, 1.0 };
window = gtk_widget_get_window (popup->outline_window);
/* Do stuff behind gtk's back */
gdk_window_hide (window);
meta_core_increment_event_serial (
GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()));
rect = te->rect;
rect.x = 0;
rect.y = 0;
gdk_window_move_resize (window,
te->rect.x, te->rect.y,
te->rect.width, te->rect.height);
gdk_window_set_background_rgba (window, &black);
region = cairo_region_create_rectangle (&rect);
inner_region = cairo_region_create_rectangle (&te->inner_rect);
cairo_region_subtract (region, inner_region);
cairo_region_destroy (inner_region);
gdk_window_shape_combine_region (window,
region,
0, 0);
cairo_region_destroy (region);
/* This should piss off gtk a bit, but we don't want to raise
* above the tab popup. So, instead of calling gtk_widget_show,
* we manually set the window as mapped and then manually map it
* with gdk functions.
*/
gtk_widget_set_mapped (popup->outline_window, TRUE);
gdk_window_show_unraised (window);
}
/* Must be before we handle an expose for the outline window */
popup->current_selected_entry = te;
}
