static void
joy_gfx3d_screen_init(JoyGfx3dScreen *self)
{
self->priv = ASSIGN_PRIVATE(self);
struct Private *priv = GET_PRIVATE(self);
priv->windows = g_queue_new();
priv->area = cairo_region_create();
priv->expose = cairo_region_create();
priv->rects = g_array_sized_new(FALSE, FALSE, sizeof(GFX3D_Rect), 128);
}
static void
joy_gfx3d_window_init(JoyGfx3dWindow *self)
{
self->priv = ASSIGN_PRIVATE(self);
struct Private *priv = GET_PRIVATE(self);
priv->expose = cairo_region_create();
priv->area = cairo_region_create();
priv->fade = joy_animation_fade_new((JoyBubble *)self, 1.);
if (priv->fade) {
joy_animation_set_duration(priv->fade, 0.1);
}
}
static int new_Region (lua_State *L)
{
lua_remove(L, 1); // remove cairo.Region
// cairo_public cairo_region_t *
// cairo_region_create (void);
// cairo_public cairo_region_t *
// cairo_region_create_rectangle (const cairo_rectangle_int_t *rectangle);
cairo_rectangle_int_t *rectangle = NULL;
int top = lua_gettop(L);
if (top > 0) rectangle = get_userdata (L, 1, LUACAIRO ".RectangleInt.mt");
cairo_region_t *reg = NULL;
if (rectangle)
reg = cairo_region_create_rectangle (rectangle);
else
reg = cairo_region_create ();
Region *o = (Region *) lua_newuserdata(L, sizeof(Region));
o->reg_ = reg;
o->havereg_ = 1;
luaL_getmetatable(L, LUACAIRO ".Region.mt");
lua_setmetatable(L, -2);
return 1;
}
static void
cheese_flash_init (CheeseFlash *self)
{
CheeseFlashPrivate *priv = self->priv = CHEESE_FLASH_GET_PRIVATE (self);
cairo_region_t *input_region;
GtkWindow *window = GTK_WINDOW (self);
const GdkRGBA white = { 1.0, 1.0, 1.0, 1.0 };
priv->flash_timeout_tag = 0;
priv->fade_timeout_tag = 0;
/* make it so it doesn't look like a window on the desktop (+fullscreen) */
gtk_window_set_decorated (window, FALSE);
gtk_window_set_skip_taskbar_hint (window, TRUE);
gtk_window_set_skip_pager_hint (window, TRUE);
gtk_window_set_keep_above (window, TRUE);
/* Don't take focus */
gtk_window_set_accept_focus (window, FALSE);
gtk_window_set_focus_on_map (window, FALSE);
/* Make it white */
gtk_widget_override_background_color (GTK_WIDGET (window), GTK_STATE_NORMAL,
&white);
/* Don't consume input */
gtk_widget_realize (GTK_WIDGET (window));
input_region = cairo_region_create ();
gdk_window_input_shape_combine_region (gtk_widget_get_window (GTK_WIDGET (window)), input_region, 0, 0);
cairo_region_destroy (input_region);
}
static void
move_locate_pointer_window (GsdLocatePointerData *data,
GdkScreen *screen)
{
cairo_region_t *region;
gint cursor_x, cursor_y;
//
// gdk_window_get_pointer (gdk_screen_get_root_window (screen),
// &cursor_x, &cursor_y, NULL);
// use gdk_device_get_position instead of gdk_window_get_device_position
// 'coz we use root window here.
GdkDisplay *display;
GdkDeviceManager * device_manager;
GdkDevice* pointer_device;
display = gdk_window_get_display (data->window);
device_manager = gdk_display_get_device_manager (display);
pointer_device = gdk_device_manager_get_client_pointer (device_manager);
gdk_device_get_position (pointer_device, NULL, &cursor_x, &cursor_y);
//
gdk_window_move_resize (data->window,
cursor_x - WINDOW_SIZE / 2,
cursor_y - WINDOW_SIZE / 2,
WINDOW_SIZE, WINDOW_SIZE);
/* allow events to happen through the window */
region = cairo_region_create ();
gdk_window_input_shape_combine_region (data->window, region, 0, 0);
cairo_region_destroy (region);
}
static cairo_region_t *
byzanz_layer_cursor_snapshot (ByzanzLayer *layer)
{
ByzanzLayerCursor *clayer = BYZANZ_LAYER_CURSOR (layer);
cairo_region_t *region, *area;
int x, y;
GdkDevice *device;
GdkDeviceManager *device_manager;
GdkDisplay *display;
GdkWindow *window;
window = layer->recorder->window;
display = gdk_window_get_display (window);
device_manager = gdk_display_get_device_manager (display);
device = gdk_device_manager_get_client_pointer (device_manager);
gdk_window_get_device_position (window, device, &x, &y, NULL);
if (x == clayer->cursor_x &&
y == clayer->cursor_y &&
clayer->cursor_next == clayer->cursor)
return NULL;
region = cairo_region_create ();
byzanz_recorder_invalidate_cursor (region, clayer->cursor, clayer->cursor_x, clayer->cursor_y);
byzanz_recorder_invalidate_cursor (region, clayer->cursor_next, x, y);
area = cairo_region_create_rectangle (&layer->recorder->area);
cairo_region_intersect (region, area);
cairo_region_destroy (area);
clayer->cursor = clayer->cursor_next;
clayer->cursor_x = x;
clayer->cursor_y = y;
byzanz_layer_cursor_setup_poll (clayer);
return region;
}
cairo_region_t *
meta_region_builder_finish (MetaRegionBuilder *builder)
{
cairo_region_t *result = NULL;
int i;
for (i = 0; i < builder->n_levels; i++)
{
if (builder->levels[i])
{
if (result == NULL)
result = builder->levels[i];
else
{
cairo_region_union(result, builder->levels[i]);
cairo_region_destroy (builder->levels[i]);
}
}
}
if (result == NULL)
result = cairo_region_create ();
return result;
}
static void
cheese_flash_init (CheeseFlash *self)
{
CheeseFlashPrivate *priv = CHEESE_FLASH_GET_PRIVATE (self);
cairo_region_t *input_region;
GtkWindow *window;
GdkScreen *screen;
priv->flash_timeout_tag = 0;
priv->fade_timeout_tag = 0;
window = GTK_WINDOW (gtk_window_new (GTK_WINDOW_POPUP));
/* make it so it doesn't look like a window on the desktop (+fullscreen) */
gtk_window_set_decorated (window, FALSE);
gtk_window_set_skip_taskbar_hint (window, TRUE);
gtk_window_set_skip_pager_hint (window, TRUE);
gtk_window_set_keep_above (window, TRUE);
gtk_window_set_type_hint (window, GDK_WINDOW_TYPE_HINT_NOTIFICATION);
/* Don't take focus */
gtk_window_set_accept_focus (window, FALSE);
gtk_window_set_focus_on_map (window, FALSE);
/* Don't consume input */
gtk_widget_realize (GTK_WIDGET (window));
input_region = cairo_region_create ();
gdk_window_input_shape_combine_region (gtk_widget_get_window (GTK_WIDGET (window)), input_region, 0, 0);
cairo_region_destroy (input_region);
g_signal_connect (G_OBJECT (window), "draw", G_CALLBACK (cheese_flash_window_draw_event_cb), NULL);
priv->window = window;
}
static void
msd_osd_window_real_realize (GtkWidget *widget)
{
GdkScreen *screen;
GdkVisual *visual;
cairo_region_t *region;
screen = gtk_widget_get_screen (widget);
visual = gdk_screen_get_rgba_visual (screen);
if (visual == NULL) {
visual = gdk_screen_get_system_visual (screen);
}
gtk_widget_set_visual (widget, visual);
if (GTK_WIDGET_CLASS (msd_osd_window_parent_class)->realize) {
GTK_WIDGET_CLASS (msd_osd_window_parent_class)->realize (widget);
}
/* make the whole window ignore events */
region = cairo_region_create ();
gtk_widget_input_shape_combine_region (widget, region);
cairo_region_destroy (region);
}
void on_monitors_changed ( GdkScreen *screen,
gpointer user_data)
{
GromitData *data = (GromitData *) user_data;
if(data->debug)
g_printerr("DEBUG: screen size changed!\n");
// get new sizes
data->width = gdk_screen_get_width (data->screen);
data->height = gdk_screen_get_height (data->screen);
// change size
gtk_widget_set_size_request(GTK_WIDGET(data->win), data->width, data->height);
// try to set transparent for input
cairo_region_t* r = cairo_region_create();
gtk_widget_input_shape_combine_region(data->win, r);
cairo_region_destroy(r);
/* recreate the shape surface */
cairo_surface_t *new_shape = cairo_image_surface_create(CAIRO_FORMAT_ARGB32 ,data->width, data->height);
cairo_t *cr = cairo_create (new_shape);
cairo_set_source_surface (cr, data->backbuffer, 0, 0);
cairo_paint (cr);
cairo_destroy (cr);
cairo_surface_destroy(data->backbuffer);
data->backbuffer = new_shape;
/*
these depend on the shape surface
*/
GHashTableIter it;
gpointer value;
g_hash_table_iter_init (&it, data->tool_config);
while (g_hash_table_iter_next (&it, NULL, &value))
paint_context_free(value);
g_hash_table_remove_all(data->tool_config);
parse_config(data); // also calls paint_context_new() :-(
data->default_pen = paint_context_new (data, GROMIT_PEN,
data->red, 7, 0, 1);
data->default_eraser = paint_context_new (data, GROMIT_ERASER,
data->red, 75, 0, 1);
if(!data->composited) // set shape
{
cairo_region_t* r = gdk_cairo_region_create_from_surface(data->backbuffer);
gtk_widget_shape_combine_region(data->win, r);
cairo_region_destroy(r);
}
setup_input_devices(data);
gtk_widget_show_all (data->win);
}
static void
set_transparent_shape (GdkWindow *window)
{
cairo_region_t *region;
region = cairo_region_create ();
gdk_window_shape_combine_region (data->window, region, 0, 0);
cairo_region_destroy (region);
}
/* Get a clip region to draw only part of a layout. index_ranges
* contains alternating range starts/stops. The region is the
* region which contains the given ranges, i.e. if you draw with the
* region as clip, only the given ranges are drawn.
*/
static cairo_region_t*
layout_iter_get_line_clip_region (PangoLayoutIter *iter,
gint x_origin,
gint y_origin,
const gint *index_ranges,
gint n_ranges)
{
PangoLayoutLine *line;
cairo_region_t *clip_region;
PangoRectangle logical_rect;
gint baseline;
gint i;
line = pango_layout_iter_get_line_readonly (iter);
clip_region = cairo_region_create ();
pango_layout_iter_get_line_extents (iter, NULL, &logical_rect);
baseline = pango_layout_iter_get_baseline (iter);
i = 0;
while (i < n_ranges)
{
gint *pixel_ranges = NULL;
gint n_pixel_ranges = 0;
gint j;
/* Note that get_x_ranges returns layout coordinates
*/
if (index_ranges[i*2+1] >= line->start_index &&
index_ranges[i*2] < line->start_index + line->length)
pango_layout_line_get_x_ranges (line,
index_ranges[i*2],
index_ranges[i*2+1],
&pixel_ranges, &n_pixel_ranges);
for (j = 0; j < n_pixel_ranges; j++)
{
GdkRectangle rect;
int x_off, y_off;
x_off = PANGO_PIXELS (pixel_ranges[2*j] - logical_rect.x);
y_off = PANGO_PIXELS (baseline - logical_rect.y);
rect.x = x_origin + x_off;
rect.y = y_origin - y_off;
rect.width = PANGO_PIXELS (pixel_ranges[2*j + 1] - logical_rect.x) - x_off;
rect.height = PANGO_PIXELS (baseline - logical_rect.y + logical_rect.height) - y_off;
cairo_region_union_rectangle (clip_region, &rect);
}
g_free (pixel_ranges);
++i;
}
return clip_region;
}
static void
gimp_tile_handler_projection_init (GimpTileHandlerProjection *projection)
{
GeglTileSource *source = GEGL_TILE_SOURCE (projection);
source->command = gimp_tile_handler_projection_command;
projection->dirty_region = cairo_region_create ();
}
static void
wl_compositor_create_region (struct wl_client *client,
struct wl_resource *compositor_resource,
uint32_t id)
{
MetaWaylandRegion *region = g_slice_new0 (MetaWaylandRegion);
region->resource = wl_resource_create (client, &wl_region_interface, wl_resource_get_version (compositor_resource), id);
wl_resource_set_implementation (region->resource, &meta_wayland_region_interface, region, meta_wayland_region_resource_destroy_cb);
region->region = cairo_region_create ();
}
static void
label_window_realize_cb (GtkWidget *widget)
{
cairo_region_t *region;
/* make the whole window ignore events */
region = cairo_region_create ();
gtk_widget_input_shape_combine_region (widget, region);
cairo_region_destroy (region);
maybe_update_shape (widget);
}
MetaWaylandRegion *
meta_wayland_region_create (MetaWaylandCompositor *compositor,
struct wl_client *client,
struct wl_resource *compositor_resource,
guint32 id)
{
MetaWaylandRegion *region = g_slice_new0 (MetaWaylandRegion);
region->resource = wl_resource_create (client, &wl_region_interface, wl_resource_get_version (compositor_resource), id);
wl_resource_set_implementation (region->resource, &meta_wayland_wl_region_interface, region, wl_region_destructor);
region->region = cairo_region_create ();
return region;
}
cairo_region_t* get_window_input_region(Display* dpy, Window w)
{
int count = 0;
int ordering = 0;
XRectangle *rects = XShapeGetRectangles(dpy, w, ShapeInput, &count,
&ordering);
cairo_region_t* reg = cairo_region_create();
for (int i=0; i<count; i++) {
cairo_rectangle_int_t rect = {rects[i].x, rects[i].y,
rects[i].width, rects[i].height};
cairo_region_union_rectangle(reg, &rect);
}
XFree(rects);
return reg;
}
cairo_region_t *make_region(struct Rgn *rgn){
int i;
cairo_region_t *ret = NULL;
if(rgn && rgn->num >= 0){
ret = cairo_region_create();
for(i = 0; i < rgn->num; i++){
rgn->rects[i].width -= rgn->rects[i].x;
rgn->rects[i].height -= rgn->rects[i].y;
cairo_region_union_rectangle(ret, &rgn->rects[i]);
}
}
return ret;
}
void
meta_region_builder_add_rectangle (MetaRegionBuilder *builder,
int x,
int y,
int width,
int height)
{
cairo_rectangle_int_t rect;
int i;
if (builder->levels[0] == NULL)
builder->levels[0] = cairo_region_create ();
rect.x = x;
rect.y = y;
rect.width = width;
rect.height = height;
cairo_region_union_rectangle (builder->levels[0], &rect);
if (cairo_region_num_rectangles (builder->levels[0]) >= MAX_CHUNK_RECTANGLES)
{
for (i = 1; i < builder->n_levels + 1; i++)
{
if (builder->levels[i] == NULL)
{
if (i < META_REGION_BUILDER_MAX_LEVELS)
{
builder->levels[i] = builder->levels[i - 1];
builder->levels[i - 1] = NULL;
if (i == builder->n_levels)
builder->n_levels++;
}
break;
}
else
{
cairo_region_union (builder->levels[i], builder->levels[i - 1]);
cairo_region_destroy (builder->levels[i - 1]);
builder->levels[i - 1] = NULL;
}
}
}
}
static void
move_locate_pointer_window (CsdLocatePointerData *data,
GdkScreen *screen)
{
cairo_region_t *region;
gint cursor_x, cursor_y;
gdk_window_get_pointer (gdk_screen_get_root_window (screen), &cursor_x, &cursor_y, NULL);
gdk_window_move_resize (data->window,
cursor_x - WINDOW_SIZE / 2,
cursor_y - WINDOW_SIZE / 2,
WINDOW_SIZE, WINDOW_SIZE);
/* allow events to happen through the window */
region = cairo_region_create ();
gdk_window_input_shape_combine_region (data->window, region, 0, 0);
cairo_region_destroy (region);
}
/**
* cairo_region_copy:
* @original: a #cairo_region_t
*
* Allocates a new region object copying the area from @original.
*
* Return value: A newly allocated #cairo_region_t. Free with
* cairo_region_destroy(). This function always returns a
* valid pointer; if memory cannot be allocated, then a special
* error object is returned where all operations on the object do nothing.
* You can check for this with cairo_region_status().
*
* Since: 1.10
**/
cairo_region_t *
cairo_region_copy (cairo_region_t *original)
{
cairo_region_t *copy;
if (original->status)
return (cairo_region_t *) &_cairo_region_nil;
copy = cairo_region_create ();
if (copy->status)
return copy;
if (! pixman_region32_copy (©->rgn, &original->rgn)) {
cairo_region_destroy (copy);
return (cairo_region_t *) &_cairo_region_nil;
}
return copy;
}
/**
* gdk_pango_layout_get_clip_region: (skip)
* @layout: a #PangoLayout
* @x_origin: X pixel where you intend to draw the layout with this clip
* @y_origin: Y pixel where you intend to draw the layout with this clip
* @index_ranges: array of byte indexes into the layout, where even members of array are start indexes and odd elements are end indexes
* @n_ranges: number of ranges in @index_ranges, i.e. half the size of @index_ranges
*
* Obtains a clip region which contains the areas where the given ranges
* of text would be drawn. @x_origin and @y_origin are the top left point
* to center the layout. @index_ranges should contain
* ranges of bytes in the layout's text.
*
* Note that the regions returned correspond to logical extents of the text
* ranges, not ink extents. So the drawn layout may in fact touch areas out of
* the clip region. The clip region is mainly useful for highlightling parts
* of text, such as when text is selected.
*
* Return value: a clip region containing the given ranges
**/
cairo_region_t*
gdk_pango_layout_get_clip_region (PangoLayout *layout,
gint x_origin,
gint y_origin,
const gint *index_ranges,
gint n_ranges)
{
PangoLayoutIter *iter;
cairo_region_t *clip_region;
g_return_val_if_fail (PANGO_IS_LAYOUT (layout), NULL);
g_return_val_if_fail (index_ranges != NULL, NULL);
clip_region = cairo_region_create ();
iter = pango_layout_get_iter (layout);
do
{
PangoRectangle logical_rect;
cairo_region_t *line_region;
gint baseline;
pango_layout_iter_get_line_extents (iter, NULL, &logical_rect);
baseline = pango_layout_iter_get_baseline (iter);
line_region = layout_iter_get_line_clip_region(iter,
x_origin + PANGO_PIXELS (logical_rect.x),
y_origin + PANGO_PIXELS (baseline),
index_ranges,
n_ranges);
cairo_region_union (clip_region, line_region);
cairo_region_destroy (line_region);
}
while (pango_layout_iter_next_line (iter));
pango_layout_iter_free (iter);
return clip_region;
}
/**
* cairo_region_copy:
* @original: a #cairo_region_t
*
* Allocates a new region object copying the area from @original.
*
* Return value: A newly allocated #cairo_region_t. Free with
* cairo_region_destroy(). This function always returns a
* valid pointer; if memory cannot be allocated, then a special
* error object is returned where all operations on the object do nothing.
* You can check for this with cairo_region_status().
*
* Since: 1.10
**/
cairo_region_t *
cairo_region_copy (const cairo_region_t *original)
{
cairo_region_t *copy;
if (original != NULL && original->status)
return (cairo_region_t *) &_cairo_region_nil;
copy = cairo_region_create ();
if (unlikely (copy->status))
return copy;
if (original != NULL &&
! pixman_region32_copy (©->rgn, CONST_CAST &original->rgn))
{
cairo_region_destroy (copy);
return (cairo_region_t *) &_cairo_region_nil;
}
return copy;
}
static cairo_region_t *
make_region_with_monitors (GdkScreen *screen)
{
cairo_region_t *region;
int num_monitors;
int i;
num_monitors = gdk_screen_get_n_monitors (screen);
region = cairo_region_create ();
for (i = 0; i < num_monitors; i++)
{
GdkRectangle rect;
gdk_screen_get_monitor_geometry (screen, i, &rect);
cairo_region_union_rectangle (region, &rect);
}
return region;
}
static cairo_region_t *
byzanz_recorder_get_invalid_region (ByzanzRecorder *recorder)
{
cairo_region_t *invalid, *layer_invalid;
GSequenceIter *iter;
invalid = cairo_region_create ();
for (iter = g_sequence_get_begin_iter (recorder->layers);
!g_sequence_iter_is_end (iter);
iter = g_sequence_iter_next (iter)) {
ByzanzLayer *layer = g_sequence_get (iter);
ByzanzLayerClass *klass = BYZANZ_LAYER_GET_CLASS (layer);
layer_invalid = klass->snapshot (layer);
if (layer_invalid) {
cairo_region_union (invalid, layer_invalid);
cairo_region_destroy (layer_invalid);
}
}
return invalid;
}
void GraphicsContext::drawFocusRing(const Vector<IntRect>& rects, int width, int /* offset */, const Color& color)
{
if (paintingDisabled())
return;
unsigned rectCount = rects.size();
cairo_t* cr = platformContext()->cr();
cairo_save(cr);
cairo_push_group(cr);
cairo_new_path(cr);
#if PLATFORM(GTK)
#ifdef GTK_API_VERSION_2
GdkRegion* reg = gdk_region_new();
#else
cairo_region_t* reg = cairo_region_create();
#endif
for (unsigned i = 0; i < rectCount; i++) {
#ifdef GTK_API_VERSION_2
GdkRectangle rect = rects[i];
gdk_region_union_with_rect(reg, &rect);
#else
cairo_rectangle_int_t rect = rects[i];
cairo_region_union_rectangle(reg, &rect);
#endif
}
gdk_cairo_region(cr, reg);
#ifdef GTK_API_VERSION_2
gdk_region_destroy(reg);
#else
cairo_region_destroy(reg);
#endif
#else
int radius = (width - 1) / 2;
Path path;
for (unsigned i = 0; i < rectCount; ++i) {
if (i > 0)
path.clear();
path.addRoundedRect(rects[i], FloatSize(radius, radius));
appendWebCorePathToCairoContext(cr, path);
}
#endif
Color ringColor = color;
adjustFocusRingColor(ringColor);
adjustFocusRingLineWidth(width);
setSourceRGBAFromColor(cr, ringColor);
cairo_set_line_width(cr, width);
setPlatformStrokeStyle(focusRingStrokeStyle());
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_stroke_preserve(cr);
cairo_set_operator(cr, CAIRO_OPERATOR_CLEAR);
cairo_set_fill_rule(cr, CAIRO_FILL_RULE_WINDING);
cairo_fill(cr);
cairo_pop_group_to_source(cr);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_paint(cr);
cairo_restore(cr);
}
static inline
cairo_region_t *
get_cairo_region_create_from_surface(struct qp_graph *gr,
cairo_surface_t *surface, int width, int height)
{
/* TODO: this is a resource pig. Make it better. */
cairo_rectangle_int_t rect;
cairo_surface_t *image;
cairo_region_t *region;
cairo_t *cr;
uint32_t *data, bg;
int x, y, stride;
if(!gr->x11)
/* Creates region that covers the area where the
* given surface is more than 50% opaque.
* The below code copies this method. This GDK
* code is a pig too. */
return gdk_cairo_region_create_from_surface(surface);
if(!gr->x11->background_set)
{
/* We need to see what the background color is when it is
* applied to an image. A small image. */
image = cairo_image_surface_create(CAIRO_FORMAT_RGB24, 1, 1);
cr = cairo_create(image);
cairo_set_source_rgba(cr, gr->background_color.r,
gr->background_color.g, gr->background_color.b,
gr->background_color.a);
cairo_paint (cr);
cairo_destroy (cr);
data = (void *) cairo_image_surface_get_data(image);
gr->x11->background = (data[0] & 0x00FFFFFF);
cairo_surface_destroy(image);
gr->x11->background_set = 1;
}
bg = gr->x11->background;
image = cairo_image_surface_create(CAIRO_FORMAT_RGB24, width, height);
cr = cairo_create(image);
cairo_set_source_surface(cr, surface, 0, 0);
cairo_paint (cr);
cairo_destroy (cr);
data = (void *) cairo_image_surface_get_data(image);
stride = cairo_image_surface_get_stride(image);
region = cairo_region_create();
for(y=0; y < height; y++)
{
for(x=0; x < width; x++)
{
/* Search for a continuous range of "background pixels"*/
gint x0=x;
while(x < width)
{
if((data[x] & 0x00FFFFFF) == bg)
/* This pixel is the background color */
break;
x++;
}
if(x > x0)
{
/* Add the pixels (x0, y) to (x, y+1) as a new rectangle
* in the region
*/
rect.x = x0;
rect.width = x - x0;
rect.y = y;
rect.height = 1;
cairo_region_union_rectangle(region, &rect);
}
}
data += stride/4;
}
cairo_surface_destroy(image);
return region;
}
static void
grab_screenshot (ClutterActor *stage,
_screenshot_data *screenshot_data)
{
MetaScreen *screen = shell_global_get_screen (screenshot_data->screenshot->global);
MetaCursorTracker *tracker;
int width, height;
GSimpleAsyncResult *result;
GSettings *settings;
meta_screen_get_size (screen, &width, &height);
do_grab_screenshot (screenshot_data, 0, 0, width, height);
if (meta_screen_get_n_monitors (screen) > 1)
{
cairo_region_t *screen_region = cairo_region_create ();
cairo_region_t *stage_region;
MetaRectangle monitor_rect;
cairo_rectangle_int_t stage_rect;
int i;
cairo_t *cr;
for (i = meta_screen_get_n_monitors (screen) - 1; i >= 0; i--)
{
meta_screen_get_monitor_geometry (screen, i, &monitor_rect);
cairo_region_union_rectangle (screen_region, (const cairo_rectangle_int_t *) &monitor_rect);
}
stage_rect.x = 0;
stage_rect.y = 0;
stage_rect.width = width;
stage_rect.height = height;
stage_region = cairo_region_create_rectangle ((const cairo_rectangle_int_t *) &stage_rect);
cairo_region_xor (stage_region, screen_region);
cairo_region_destroy (screen_region);
cr = cairo_create (screenshot_data->image);
for (i = 0; i < cairo_region_num_rectangles (stage_region); i++)
{
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (stage_region, i, &rect);
cairo_rectangle (cr, (double) rect.x, (double) rect.y, (double) rect.width, (double) rect.height);
cairo_fill (cr);
}
cairo_destroy (cr);
cairo_region_destroy (stage_region);
}
screenshot_data->screenshot_area.x = 0;
screenshot_data->screenshot_area.y = 0;
screenshot_data->screenshot_area.width = width;
screenshot_data->screenshot_area.height = height;
settings = g_settings_new (A11Y_APPS_SCHEMA);
if (screenshot_data->include_cursor &&
!g_settings_get_boolean (settings, MAGNIFIER_ACTIVE_KEY))
{
tracker = meta_cursor_tracker_get_for_screen (screen);
_draw_cursor_image (tracker, screenshot_data->image, screenshot_data->screenshot_area);
}
g_object_unref (settings);
g_signal_handlers_disconnect_by_func (stage, (void *)grab_screenshot, (gpointer)screenshot_data);
result = g_simple_async_result_new (NULL, on_screenshot_written, (gpointer)screenshot_data, grab_screenshot);
g_simple_async_result_run_in_thread (result, write_screenshot_thread, G_PRIORITY_DEFAULT, NULL);
g_object_unref (result);
}
/* This special-case filler supports only a path that describes a
* device-axis aligned rectangle. It exists to avoid the overhead of
* the general tessellator when drawing very common rectangles.
*
* If the path described anything but a device-axis aligned rectangle,
* this function will abort.
*/
cairo_region_t *
_cairo_path_fixed_fill_rectilinear_to_region (const cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
const cairo_rectangle_int_t *extents)
{
cairo_rectangle_int_t rectangle_stack[CAIRO_STACK_ARRAY_LENGTH (cairo_rectangle_int_t)];
cairo_box_t box;
cairo_region_t *region = NULL;
assert (path->maybe_fill_region);
assert (! path->is_empty_fill);
if (_cairo_path_fixed_is_box (path, &box)) {
rectangle_stack[0].x = _cairo_fixed_integer_part (box.p1.x);
rectangle_stack[0].y = _cairo_fixed_integer_part (box.p1.y);
rectangle_stack[0].width = _cairo_fixed_integer_part (box.p2.x) -
rectangle_stack[0].x;
rectangle_stack[0].height = _cairo_fixed_integer_part (box.p2.y) -
rectangle_stack[0].y;
if (! _cairo_rectangle_intersect (&rectangle_stack[0], extents))
region = cairo_region_create ();
else
region = cairo_region_create_rectangle (&rectangle_stack[0]);
} else if (fill_rule == CAIRO_FILL_RULE_WINDING) {
cairo_rectangle_int_t *rects = rectangle_stack;
cairo_path_fixed_iter_t iter;
int last_cw = -1;
int size = ARRAY_LENGTH (rectangle_stack);
int count = 0;
/* Support a series of rectangles as can be expected to describe a
* GdkRegion clip region during exposes.
*/
_cairo_path_fixed_iter_init (&iter, path);
while (_cairo_path_fixed_iter_is_fill_box (&iter, &box)) {
int cw = 0;
if (box.p1.x > box.p2.x) {
cairo_fixed_t t;
t = box.p1.x;
box.p1.x = box.p2.x;
box.p2.x = t;
cw = ! cw;
}
if (box.p1.y > box.p2.y) {
cairo_fixed_t t;
t = box.p1.y;
box.p1.y = box.p2.y;
box.p2.y = t;
cw = ! cw;
}
if (last_cw < 0)
last_cw = cw;
else if (last_cw != cw)
goto TESSELLATE;
if (count == size) {
cairo_rectangle_int_t *new_rects;
size *= 4;
if (rects == rectangle_stack) {
new_rects = _cairo_malloc_ab (size,
sizeof (cairo_rectangle_int_t));
if (unlikely (new_rects == NULL)) {
/* XXX _cairo_region_nil */
break;
}
memcpy (new_rects, rects, sizeof (rectangle_stack));
} else {
new_rects = _cairo_realloc_ab (rects, size,
sizeof (cairo_rectangle_int_t));
if (unlikely (new_rects == NULL)) {
/* XXX _cairo_region_nil */
break;
}
}
rects = new_rects;
}
rects[count].x = _cairo_fixed_integer_part (box.p1.x);
rects[count].y = _cairo_fixed_integer_part (box.p1.y);
rects[count].width = _cairo_fixed_integer_part (box.p2.x) - rects[count].x;
rects[count].height = _cairo_fixed_integer_part (box.p2.y) - rects[count].y;
if (_cairo_rectangle_intersect (&rects[count], extents))
count++;
}
if (_cairo_path_fixed_iter_at_end (&iter))
region = cairo_region_create_rectangles (rects, count);
TESSELLATE:
if (rects != rectangle_stack)
free (rects);
}
if (region == NULL) {
/* Hmm, complex polygon */
region = _cairo_path_fixed_fill_rectilinear_tessellate_to_region (path,
fill_rule,
extents);
}
return region;
}
static cairo_region_t *
_cairo_path_fixed_fill_rectilinear_tessellate_to_region (const cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
const cairo_rectangle_int_t *extents)
{
cairo_box_t box;
cairo_polygon_t polygon;
cairo_traps_t traps;
cairo_status_t status;
cairo_region_t *region;
/* first try to bypass fill-to-polygon */
_cairo_traps_init (&traps);
status = _cairo_path_fixed_fill_rectilinear_to_traps (path,
fill_rule,
&traps);
if (_cairo_status_is_error (status))
goto CLEANUP_TRAPS;
if (status == CAIRO_STATUS_SUCCESS) {
status = _cairo_traps_extract_region (&traps, ®ion);
goto CLEANUP_TRAPS;
}
/* path is not rectangular, try extracting clipped rectilinear edges */
_cairo_polygon_init (&polygon);
if (extents != NULL) {
_cairo_box_from_rectangle (&box, extents);
_cairo_polygon_limit (&polygon, &box, 1);
}
/* tolerance will be ignored as the path is rectilinear */
status = _cairo_path_fixed_fill_to_polygon (path, 0., &polygon);
if (unlikely (status))
goto CLEANUP_POLYGON;
if (polygon.num_edges == 0) {
region = cairo_region_create ();
} else {
status =
_cairo_bentley_ottmann_tessellate_rectilinear_polygon (&traps,
&polygon,
fill_rule);
if (likely (status == CAIRO_STATUS_SUCCESS))
status = _cairo_traps_extract_region (&traps, ®ion);
}
CLEANUP_POLYGON:
_cairo_polygon_fini (&polygon);
CLEANUP_TRAPS:
_cairo_traps_fini (&traps);
if (unlikely (status)) { /* XXX _cairo_region_create_in_error() */
region = cairo_region_create ();
if (likely (region->status) == CAIRO_STATUS_SUCCESS)
region->status = status;
}
return region;
}