static Bool
canvas_configure_event(GtkWidget *widget, GdkEventConfigure *event) {
GtkAllocation allocation;
cairo_text_extents_t te;
//printf("canvas_configure_event\n");
gtk_widget_get_allocation(widget,&allocation);
vdevice.sizeX = 1;
vdevice.sizeY = 1;
vdevice.minVx = vdevice.minVy = 0;
vdevice.maxVx = vdevice.sizeSx = allocation.width;
vdevice.maxVy = vdevice.sizeSy = allocation.height;
vdevice.depth = 3;
if (VGUI.cr!=NULL) {
cairo_destroy (VGUI.cr);
cairo_surface_destroy (VGUI.surface);
}
VGUI.surface= gdk_window_create_similar_surface (gtk_widget_get_window (VGUI.canvas),
CAIRO_CONTENT_COLOR, vdevice.sizeSx, vdevice.sizeSy);
VGUI.cr = cairo_create(VGUI.surface);
cairo_set_antialias(VGUI.cr,VGUI.antialias);
my_set_font(VGUI.cr);
cairo_text_extents (VGUI.cr, "A", &te);
vdevice.hheight = te.height;
vdevice.hwidth = te.x_advance;
VGUI.line_width=1;
//printf("vdevice address=%ld, vdevice.sizeSx=%d, vdevice.sizeSy=%d\n", (long)&vdevice, vdevice.sizeSx, vdevice.sizeSy);
Keyboard_Buffer_push(' '); // queue a redraw command
notify_input();
return TRUE;
}
/* Create a new surface of the appropriate size to store our scribbles */
static gboolean
scribble_configure_event (GtkWidget *widget,
GdkEventConfigure *event,
gpointer data)
{
GtkAllocation allocation;
cairo_t *cr;
if (surface)
cairo_surface_destroy (surface);
gtk_widget_get_allocation (widget, &allocation);
surface = gdk_window_create_similar_surface (gtk_widget_get_window (widget),
CAIRO_CONTENT_COLOR,
allocation.width,
allocation.height);
/* Initialize the surface to white */
cr = cairo_create (surface);
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
cairo_destroy (cr);
/* We've handled the configure event, no need for further processing. */
return TRUE;
}
static void
maybe_update_shape (GtkTooltip *tooltip)
{
cairo_t *cr;
cairo_surface_t *surface;
cairo_region_t *region;
/* fallback to XShape only for non-composited clients */
if (gtk_widget_is_composited (tooltip->window))
{
gtk_widget_shape_combine_region (tooltip->window, NULL);
return;
}
surface = gdk_window_create_similar_surface (gtk_widget_get_window (tooltip->window),
CAIRO_CONTENT_COLOR_ALPHA,
gtk_widget_get_allocated_width (tooltip->window),
gtk_widget_get_allocated_height (tooltip->window));
cr = cairo_create (surface);
paint_background_and_frame (tooltip, cr);
cairo_destroy (cr);
region = gdk_cairo_region_create_from_surface (surface);
gtk_widget_shape_combine_region (tooltip->window, region);
cairo_surface_destroy (surface);
cairo_region_destroy (region);
}
static gint
load_graph_configure (GtkWidget *widget, GdkEventConfigure *event,
gpointer data_ptr)
{
GtkAllocation allocation;
LoadGraph *c = (LoadGraph *) data_ptr;
load_graph_unalloc (c);
gtk_widget_get_allocation (c->disp, &allocation);
c->draw_width = allocation.width;
c->draw_height = allocation.height;
c->draw_width = MAX (c->draw_width, 1);
c->draw_height = MAX (c->draw_height, 1);
load_graph_alloc (c);
if (!c->surface)
c->surface = gdk_window_create_similar_surface (gtk_widget_get_window (c->disp),
CAIRO_CONTENT_COLOR,
c->draw_width, c->draw_height);
gtk_widget_queue_draw (widget);
return TRUE;
}
static gboolean configure_cb (GtkWidget *widget,
GdkEventConfigure *evt, gpointer user_data) {
canvasbacken_data_t *data = user_data;
assert (data);
int w = gtk_widget_get_allocated_width (widget);
int h = gtk_widget_get_allocated_height (widget);
if (data->track)
cairo_surface_destroy (data->track);
data->track = gdk_window_create_similar_surface (
gtk_widget_get_window (widget),
CAIRO_CONTENT_COLOR_ALPHA,
w, h);
clear_surface (data->track);
if (data->surf)
cairo_surface_destroy (data->surf);
data->surf = cairo_surface_create_similar (
data->track,
CAIRO_CONTENT_COLOR_ALPHA,
w, h);
clear_surface (data->surf);
canvas_draw (data);
gtk_widget_queue_draw (widget);
return TRUE;
}
static void
maybe_update_shape (GtkWidget *widget)
{
cairo_t *cr;
cairo_surface_t *surface;
cairo_region_t *region;
/* fallback to XShape only for non-composited clients */
if (gtk_widget_is_composited (widget)) {
gtk_widget_shape_combine_region (widget, NULL);
return;
}
surface = gdk_window_create_similar_surface (gtk_widget_get_window (widget),
CAIRO_CONTENT_COLOR_ALPHA,
gtk_widget_get_allocated_width (widget),
gtk_widget_get_allocated_height (widget));
cr = cairo_create (surface);
label_draw_background_and_frame (widget, cr, TRUE);
cairo_destroy (cr);
region = gdk_cairo_region_create_from_surface (surface);
gtk_widget_shape_combine_region (widget, region);
cairo_surface_destroy (surface);
cairo_region_destroy (region);
}
static void
gtk_bubble_window_update_shape (GtkBubbleWindow *window)
{
cairo_surface_t *surface;
cairo_region_t *region;
GdkWindow *win;
cairo_t *cr;
win = gtk_widget_get_window (GTK_WIDGET (window));
surface =
gdk_window_create_similar_surface (win,
CAIRO_CONTENT_COLOR_ALPHA,
gdk_window_get_width (win),
gdk_window_get_height (win));
cr = cairo_create (surface);
gtk_bubble_window_apply_border_path (window, cr);
cairo_fill (cr);
cairo_destroy (cr);
region = gdk_cairo_region_create_from_surface (surface);
cairo_surface_destroy (surface);
if (!gtk_widget_is_composited (GTK_WIDGET (window)))
gtk_widget_shape_combine_region (GTK_WIDGET (window), region);
gtk_widget_input_shape_combine_region (GTK_WIDGET (window), region);
cairo_region_destroy (region);
}
static GdkPixbuf* accessx_status_applet_get_glyph_pixbuf(AccessxStatusApplet* sapplet, GtkWidget* widget, GdkPixbuf* base, GdkColor* fg, GdkColor* bg, gchar* glyphstring)
{
GdkPixbuf* glyph_pixbuf;
cairo_surface_t *surface;
PangoLayout* layout;
PangoRectangle ink, logic;
PangoContext* pango_context;
gint w = gdk_pixbuf_get_width(base);
gint h = gdk_pixbuf_get_height(base);
cairo_t *cr;
surface = gdk_window_create_similar_surface (gdk_get_default_root_window (), CAIRO_CONTENT_COLOR_ALPHA, w, h);
pango_context = gtk_widget_get_pango_context(widget);
layout = pango_layout_new(pango_context);
pango_layout_set_alignment(layout, PANGO_ALIGN_CENTER);
pango_layout_set_text(layout, glyphstring, -1);
cr = cairo_create (surface);
gdk_cairo_set_source_color (cr, bg);
cairo_paint (cr);
gdk_cairo_set_source_color (cr, fg);
pango_layout_get_pixel_extents(layout, &ink, &logic);
cairo_move_to (cr, (w - ink.x - ink.width)/2, (h - ink.y - ink.height)/2);
pango_cairo_show_layout (cr, layout);
cairo_destroy (cr);
g_object_unref(layout);
glyph_pixbuf = gdk_pixbuf_get_from_surface (surface, 0, 0, w, h);
cairo_surface_destroy (surface);
return glyph_pixbuf;
}
static void
selection_render_mask (Selection *selection)
{
GdkWindow *window;
cairo_surface_t *surface;
cairo_t *cr;
window = gtk_widget_get_window (selection->shell->canvas);
surface = gdk_window_create_similar_surface (window, CAIRO_CONTENT_ALPHA,
gdk_window_get_width (window),
gdk_window_get_height (window));
cr = cairo_create (surface);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
cairo_set_line_width (cr, 1.0);
if (selection->shell->rotate_transform)
cairo_transform (cr, selection->shell->rotate_transform);
gimp_cairo_add_segments (cr,
selection->segs_in,
selection->n_segs_in);
cairo_stroke (cr);
selection->segs_in_mask = cairo_pattern_create_for_surface (surface);
cairo_destroy (cr);
cairo_surface_destroy (surface);
}
static gboolean vfo_configure_event_cb (GtkWidget *widget,
GdkEventConfigure *event,
gpointer data)
{
fprintf(stderr,"vfo_configure_event_cb: width=%d height=%d\n",
gtk_widget_get_allocated_width (widget),
gtk_widget_get_allocated_height (widget));
if (vfo_surface)
cairo_surface_destroy (vfo_surface);
vfo_surface = gdk_window_create_similar_surface (gtk_widget_get_window (widget),
CAIRO_CONTENT_COLOR,
gtk_widget_get_allocated_width (widget),
gtk_widget_get_allocated_height (widget));
/* Initialize the surface to black */
cairo_t *cr;
cr = cairo_create (vfo_surface);
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_paint (cr);
g_idle_add(vfo_update,NULL);
/* We've handled the configure event, no need for further processing. */
return TRUE;
}
/**
* ppg_ruler_size_allocate:
* @ruler: (in): A #PpgRuler.
*
* Handle the "size-allocate" for the #GtkWidget. The pixmap for the
* background is created and drawn if necessary.
*
* Returns: None.
* Side effects: None.
*/
static void
ppg_ruler_size_allocate (GtkWidget *widget,
GtkAllocation *alloc)
{
PpgRuler *ruler = (PpgRuler *)widget;
PpgRulerPrivate *priv;
GdkWindow *window;
g_return_if_fail(PPG_IS_RULER(ruler));
priv = ruler->priv;
GTK_WIDGET_CLASS(ppg_ruler_parent_class)->size_allocate(widget, alloc);
if (priv->ruler) {
cairo_surface_destroy(priv->ruler);
}
if (gtk_widget_is_drawable(widget)) {
window = gtk_widget_get_window(widget);
priv->ruler = gdk_window_create_similar_surface(window,
CAIRO_CONTENT_COLOR_ALPHA,
alloc->width,
alloc->height);
ppg_ruler_draw_ruler(ruler);
}
}
std::unique_ptr<BackingStoreBackendCairo> BackingStore::createBackend()
{
#if PLATFORM(GTK) && PLATFORM(X11)
const auto& sharedDisplay = PlatformDisplay::sharedDisplay();
if (is<PlatformDisplayX11>(sharedDisplay)) {
GdkVisual* visual = gtk_widget_get_visual(m_webPageProxy.viewWidget());
GdkScreen* screen = gdk_visual_get_screen(visual);
ASSERT(downcast<PlatformDisplayX11>(sharedDisplay).native() == GDK_SCREEN_XDISPLAY(screen));
return std::make_unique<BackingStoreBackendCairoX11>(downcast<PlatformDisplayX11>(sharedDisplay).native(), GDK_WINDOW_XID(gdk_screen_get_root_window(screen)),
GDK_VISUAL_XVISUAL(visual), gdk_visual_get_depth(visual), m_size, m_deviceScaleFactor);
}
#endif
IntSize scaledSize = m_size;
scaledSize.scale(m_deviceScaleFactor);
#if PLATFORM(GTK)
RefPtr<cairo_surface_t> surface = adoptRef(gdk_window_create_similar_surface(gtk_widget_get_window(m_webPageProxy.viewWidget()),
CAIRO_CONTENT_COLOR_ALPHA, scaledSize.width(), scaledSize.height()));
#else
RefPtr<cairo_surface_t> surface = adoptRef(cairo_image_surface_create(CAIRO_FORMAT_ARGB32, scaledSize.width(), scaledSize.height()));
#endif
cairoSurfaceSetDeviceScale(surface.get(), m_deviceScaleFactor, m_deviceScaleFactor);
return std::make_unique<BackingStoreBackendCairoImpl>(surface.get(), m_size);
}
void ChunkedUpdateDrawingAreaProxy::ensureBackingStore()
{
if (m_backingStoreImage)
return;
m_backingStoreImage = gdk_window_create_similar_surface(gtk_widget_get_window(m_webView->window()),
CAIRO_CONTENT_COLOR_ALPHA, size().width(), size().height());
}
static gboolean on_configure_event(GtkWidget *widget, GdkEventConfigure *event, gpointer user_data) {
if (surface != NULL) {
cairo_surface_destroy(surface);
}
surface = gdk_window_create_similar_surface(gtk_widget_get_window(widget), CAIRO_CONTENT_COLOR,
gtk_widget_get_allocated_width(widget), gtk_widget_get_allocated_height(widget));
clear_surface();
return TRUE;
}
static cairo_region_t*
curved_rect_mask(GtkWidget *widget)
{
GdkWindow *window;
cairo_region_t *shape;
cairo_surface_t *surface;
cairo_t *cr;
double w, h;
int radius;
if (!gtk_widget_get_realized(widget))
return NULL;
window = gtk_widget_get_window(widget);
w = gdk_window_get_width(window);
h = gdk_window_get_height(window);
if (w <= 50 || h <= 50)
return NULL;
radius = h / 4;
surface = gdk_window_create_similar_surface(window,
CAIRO_CONTENT_COLOR_ALPHA,
w, h);
cr = cairo_create (surface);
if (radius > w / 2)
radius = w / 2;
if (radius > h / 2)
radius = h / 2;
// fill shape with black
cairo_save(cr);
cairo_rectangle (cr, 0, 0, w, h);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
cairo_fill (cr);
cairo_restore (cr);
cairo_move_to (cr, 0, radius);
cairo_curve_to (cr, 0 , 0, 0 , 0, radius, 0);
cairo_line_to (cr, w - radius, 0);
cairo_curve_to (cr, w, 0, w, 0, w, radius);
cairo_line_to (cr, w , h - radius);
cairo_curve_to (cr, w, h, w, h, w - radius, h);
cairo_line_to (cr, 0 + radius, h);
cairo_curve_to (cr, 0, h, 0, h, 0, h - radius);
cairo_close_path(cr);
cairo_set_source_rgb(cr, 1, 1, 1);
cairo_fill(cr);
cairo_destroy(cr);
shape = gdk_cairo_region_create_from_surface(surface);
cairo_surface_destroy(surface);
return shape;
}
static GdkPixbuf* accessx_status_applet_get_glyph_pixbuf(AccessxStatusApplet* sapplet, GtkWidget* widget, GdkPixbuf* base, GdkColor* fg, GdkColor* bg, gchar* glyphstring)
{
GdkPixbuf* glyph_pixbuf;
#if GTK_CHECK_VERSION (3, 0, 0)
cairo_surface_t *surface;
#else
GdkPixbuf *alpha_pixbuf;
GdkPixmap* pixmap;
#endif
PangoLayout* layout;
PangoRectangle ink, logic;
PangoContext* pango_context;
gint w = gdk_pixbuf_get_width(base);
gint h = gdk_pixbuf_get_height(base);
cairo_t *cr;
#if GTK_CHECK_VERSION (3, 0, 0)
surface = gdk_window_create_similar_surface (gdk_get_default_root_window (), CAIRO_CONTENT_COLOR_ALPHA, w, h);
#else
pixmap = gdk_pixmap_new(gdk_get_default_root_window (),w, h, -1);
#endif
pango_context = gtk_widget_get_pango_context(widget);
layout = pango_layout_new(pango_context);
pango_layout_set_alignment(layout, PANGO_ALIGN_CENTER);
pango_layout_set_text(layout, glyphstring, -1);
#if GTK_CHECK_VERSION (3, 0, 0)
cr = cairo_create (surface);
#else
cr = gdk_cairo_create (pixmap);
#endif
gdk_cairo_set_source_color (cr, bg);
cairo_paint (cr);
gdk_cairo_set_source_color (cr, fg);
pango_layout_get_pixel_extents(layout, &ink, &logic);
cairo_move_to (cr, (w - ink.x - ink.width)/2, (h - ink.y - ink.height)/2);
pango_cairo_show_layout (cr, layout);
cairo_destroy (cr);
g_object_unref(layout);
#if GTK_CHECK_VERSION (3, 0, 0)
glyph_pixbuf = gdk_pixbuf_get_from_surface (surface, 0, 0, w, h);
cairo_surface_destroy (surface);
return glyph_pixbuf;
#else
glyph_pixbuf = gdk_pixbuf_get_from_drawable(NULL, pixmap, NULL, 0, 0, 0, 0, w, h);
g_object_unref(pixmap);
alpha_pixbuf = gdk_pixbuf_add_alpha(glyph_pixbuf, TRUE, bg->red >> 8, bg->green >> 8, bg->blue >> 8);
g_object_unref(G_OBJECT(glyph_pixbuf));
return alpha_pixbuf;
#endif
}
static cairo_surface_t *
tile_surface (cairo_surface_t *surface,
int width,
int height)
{
cairo_surface_t *copy;
cairo_t *cr;
if (surface == NULL)
{
copy = gdk_window_create_similar_surface (gdk_get_default_root_window (),
CAIRO_CONTENT_COLOR,
width, height);
}
else
{
copy = cairo_surface_create_similar (surface,
cairo_surface_get_content (surface),
width, height);
}
cr = cairo_create (copy);
if (surface != NULL)
{
cairo_pattern_t *pattern;
cairo_set_source_surface (cr, surface, 0.0, 0.0);
pattern = cairo_get_source (cr);
cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
}
else
{
GtkStyleContext *context;
GdkRGBA bg;
context = gtk_style_context_new ();
gtk_style_context_add_provider (context,
GTK_STYLE_PROVIDER (gtk_css_provider_get_default ()),
GTK_STYLE_PROVIDER_PRIORITY_THEME);
gtk_style_context_get_background_color (context, GTK_STATE_FLAG_NORMAL, &bg);
gdk_cairo_set_source_rgba(cr, &bg);
g_object_unref (G_OBJECT (context));
}
cairo_paint (cr);
if (cairo_status (cr) != CAIRO_STATUS_SUCCESS)
{
cairo_surface_destroy (copy);
copy = NULL;
}
cairo_destroy(cr);
return copy;
}
static cairo_surface_t *
tile_surface (cairo_surface_t *surface,
int width,
int height)
{
cairo_surface_t *copy;
cairo_t *cr;
#if GTK_CHECK_VERSION (3, 0, 0)
if (surface == NULL)
{
copy = gdk_window_create_similar_surface (gdk_get_default_root_window (),
CAIRO_CONTENT_COLOR,
width, height);
}
else
{
copy = cairo_surface_create_similar (surface,
cairo_surface_get_content (surface),
width, height);
}
#else
copy = gdk_pixmap_new(surface, width, height, surface == NULL? 24 : -1);
#endif
cr = cairo_create (copy);
if (surface != NULL)
{
cairo_pattern_t *pattern;
cairo_set_source_surface (cr, surface, 0.0, 0.0);
pattern = cairo_get_source (cr);
cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
}
else
{
GtkStyle *style;
style = gtk_widget_get_default_style ();
gdk_cairo_set_source_color(cr, &style->bg[GTK_STATE_NORMAL]);
}
cairo_paint (cr);
if (cairo_status (cr) != CAIRO_STATUS_SUCCESS)
{
cairo_surface_destroy (copy);
copy = NULL;
}
cairo_destroy(cr);
return copy;
}
/* Redraws the backing pixmap for the load graph and updates the window */
static void
load_graph_draw (LoadGraph *g)
{
GtkStyle *style;
guint i, j;
cairo_t *cr;
/* we might get called before the configure event so that
* g->disp->allocation may not have the correct size
* (after the user resized the applet in the prop dialog). */
if (!g->surface)
g->surface = gdk_window_create_similar_surface (gtk_widget_get_window (g->disp),
CAIRO_CONTENT_COLOR,
g->draw_width, g->draw_height);
style = gtk_widget_get_style (g->disp);
cr = cairo_create (g->surface);
cairo_set_line_width (cr, 1.0);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
for (i = 0; i < g->draw_width; i++)
g->pos [i] = g->draw_height - 1;
for (j = 0; j < g->n; j++)
{
gdk_cairo_set_source_color (cr, &(g->colors [j]));
for (i = 0; i < g->draw_width; i++) {
if (g->data [i][j] != 0) {
cairo_move_to (cr,
g->draw_width - i - 0.5,
g->pos[i] + 0.5);
cairo_line_to (cr,
g->draw_width - i - 0.5,
g->pos[i] - (g->data [i][j] - 0.5));
g->pos [i] -= g->data [i][j];
}
}
cairo_stroke (cr);
}
cairo_destroy (cr);
cr = gdk_cairo_create (gtk_widget_get_window (g->disp));
cairo_set_source_surface (cr, g->surface, 0, 0);
cairo_paint (cr);
cairo_destroy (cr);
}
static gboolean
gd_stack_draw (GtkWidget *widget,
cairo_t *cr)
{
GdStack *stack = GD_STACK (widget);
GdStackPrivate *priv = stack->priv;
cairo_t *pattern_cr;
if (priv->visible_child)
{
if (priv->transition_pos < 1.0)
{
if (priv->last_visible_surface == NULL &&
priv->last_visible_child != NULL)
{
gtk_widget_get_allocation (priv->last_visible_child->widget,
&priv->last_visible_surface_allocation);
priv->last_visible_surface =
gdk_window_create_similar_surface (gtk_widget_get_window (widget),
CAIRO_CONTENT_COLOR_ALPHA,
priv->last_visible_surface_allocation.width,
priv->last_visible_surface_allocation.height);
pattern_cr = cairo_create (priv->last_visible_surface);
/* We don't use propagate_draw here, because we don't want to apply
the bin_window offset */
gtk_widget_draw (priv->last_visible_child->widget, pattern_cr);
cairo_destroy (pattern_cr);
}
switch (priv->transition_type)
{
case GD_STACK_TRANSITION_TYPE_CROSSFADE:
gd_stack_draw_crossfade (widget, cr);
break;
case GD_STACK_TRANSITION_TYPE_SLIDE_LEFT:
case GD_STACK_TRANSITION_TYPE_SLIDE_RIGHT:
gd_stack_draw_slide (widget, cr);
break;
default:
g_assert_not_reached ();
}
}
else if (gtk_cairo_should_draw_window (cr, priv->bin_window))
gtk_container_propagate_draw (GTK_CONTAINER (stack),
priv->visible_child->widget,
cr);
}
return TRUE;
}
/**
* ar_card_surface_cache_get_card_surface_by_id:
* @cache:
* @card_id:
*
* Returns: a cached #cairo_surface_t for @card_id.
*/
cairo_surface_t *
ar_card_surface_cache_get_card_surface_by_id (ArCardSurfaceCache *cache,
guint card_id)
{
ArCardSurfaceCachePrivate *priv = cache->priv;
cairo_surface_t *surface;
g_return_val_if_fail (card_id < AR_CARDS_TOTAL , NULL);
LOG_CALL (cache);
surface = priv->cards[card_id];
if (IS_FAILED_SURFACE (surface)) {
LOG_CACHE_HIT (cache);
return NULL;
}
if (surface == NULL) {
CardSize card_size;
cairo_t *cr;
LOG_CACHE_MISS (cache);
ar_card_theme_get_size (priv->theme, &card_size);
if (priv->drawable != NULL) {
surface = gdk_window_create_similar_surface (priv->drawable, CAIRO_CONTENT_COLOR_ALPHA,
card_size.width, card_size.height);
} else {
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
card_size.width, card_size.height);
}
cr = cairo_create (surface);
ar_card_theme_paint_card (priv->theme, cr, card_id);
cairo_destroy (cr);
if (cairo_surface_status (surface) != CAIRO_STATUS_SUCCESS) {
cairo_surface_destroy (surface);
priv->cards[card_id] = FAILED_SURFACE;
return NULL;
}
priv->cards[card_id] = surface; /* adopts */
} else {
LOG_CACHE_HIT (cache);
}
return surface;
}
static gboolean splash_configure_event_cb (GtkWidget *widget,
GdkEventConfigure *event,
gpointer data)
{
if (splash_surface)
cairo_surface_destroy (splash_surface);
splash_surface = gdk_window_create_similar_surface (gtk_widget_get_window (widget),
CAIRO_CONTENT_COLOR,
gtk_widget_get_allocated_width (widget),
gtk_widget_get_allocated_height (widget));
return TRUE;
}
static gboolean configure_event_cb (GtkWidget *widget,
GdkEventConfigure *event,
gpointer data)
{
if (surface)
cairo_surface_destroy(surface);
surface = gdk_window_create_similar_surface(gtk_widget_get_window(widget),
CAIRO_CONTENT_COLOR,
CanvasWidth,
CanvasWidth);
DrawBoard();
gtk_widget_queue_draw_area(widget, 0, 0, CanvasWidth, CanvasWidth);
return TRUE;
}
static cairo_pattern_t *
composite_image_onto_desktop (PanelBackground *background)
{
int width, height;
cairo_t *cr;
cairo_surface_t *surface;
cairo_pattern_t *pattern;
if (!background->desktop)
background->desktop = get_desktop_pixbuf (background);
if (!background->desktop)
return NULL;
width = gdk_pixbuf_get_width (background->desktop);
height = gdk_pixbuf_get_height (background->desktop);
surface = gdk_window_create_similar_surface (background->window,
CAIRO_CONTENT_COLOR_ALPHA,
width, height);
if (cairo_surface_status (surface) != CAIRO_STATUS_SUCCESS) {
cairo_surface_destroy (surface);
return NULL;
}
cr = cairo_create (surface);
if(!gdk_window_check_composited_wm(background->window)){
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
gdk_cairo_set_source_pixbuf (cr, background->desktop, 0, 0);
cairo_rectangle (cr, 0, 0, width, height);
cairo_fill (cr);
}
gdk_cairo_set_source_pixbuf (cr, background->transformed_image, 0, 0);
pattern = cairo_get_source (cr);
cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
cairo_rectangle (cr, 0, 0, width, height);
cairo_fill (cr);
cairo_destroy (cr);
pattern = cairo_pattern_create_for_surface (surface);
cairo_surface_destroy (surface);
return pattern;
}
cairo_surface_t *
create_surface (int w,
int h,
GtkWidget *parent_style_window)
{
GdkWindow *window;
cairo_surface_t *surface;
if (w == 0 || h == 0)
abort ();
window = gtk_widget_get_window (parent_style_window);
surface = gdk_window_create_similar_surface (window, CAIRO_CONTENT_COLOR_ALPHA, w, h);
return surface;
}
/**
* ppg_visualizer_resize_timeout:
* @visualizer: (in): A #PpgVisualizer.
*
* A GSourceFunc to handle a resize request. The surface of the visualizer
* is resized and a draw request is queued.
*
* Returns: %FALSE always
* Side effects: None.
*/
static gboolean
ppg_visualizer_resize_timeout (gpointer data)
{
PpgVisualizer *visualizer = (PpgVisualizer *)data;
PpgVisualizerPrivate *priv;
cairo_pattern_t *pattern;
GdkWindow *window;
GooCanvas *canvas;
gdouble width;
gdouble height;
g_return_val_if_fail(PPG_IS_VISUALIZER(visualizer), FALSE);
priv = visualizer->priv;
/*
* Remove existing surface.
*/
if (priv->surface) {
g_object_set(visualizer, "pattern", NULL, NULL);
cairo_surface_destroy(priv->surface);
priv->surface = NULL;
}
/*
* Create new surface matching new size allocation.
*/
g_object_get(visualizer, "height", &height, "width", &width, NULL);
canvas = goo_canvas_item_get_canvas(GOO_CANVAS_ITEM(visualizer));
window = gtk_widget_get_window(GTK_WIDGET(canvas));
priv->surface = gdk_window_create_similar_surface(window,
CAIRO_CONTENT_COLOR_ALPHA,
width, height);
/*
* Create a new pattern for drawing the item.
*/
pattern = cairo_pattern_create_for_surface(priv->surface);
g_object_set(visualizer, "pattern", pattern, NULL);
cairo_pattern_destroy(pattern);
ppg_visualizer_queue_draw(visualizer);
priv->resize_handler = 0;
return FALSE;
}
/*
* Aquí creamos una superficie de dibujo en la cual vamos a almacenar todo.
*/
gboolean on_drawingareaPrincipal_configure_event(GtkWidget *widget, GdkEventConfigure *event, gpointer user_data){
/* Verificamos que la superficie no esté en uso */
if(superficie)
cairo_surface_destroy(superficie);
/* Creamos una nueva instancia de la superficie */
superficie = gdk_window_create_similar_surface (gtk_widget_get_window (widget),
CAIRO_CONTENT_COLOR,
gtk_widget_get_allocated_width (widget),
gtk_widget_get_allocated_height (widget));
/* Iniciamos con una superficie limpia */
limpia_superficie();
/* En este punto hemos manejado satisfactoriamente el evento. */
return TRUE;
}
static void
gimp_ruler_make_pixmap (GimpRuler *ruler)
{
GtkWidget *widget = GTK_WIDGET (ruler);
GimpRulerPrivate *priv = GIMP_RULER_GET_PRIVATE (ruler);
GtkAllocation allocation;
gtk_widget_get_allocation (widget, &allocation);
if (priv->backing_store)
cairo_surface_destroy (priv->backing_store);
priv->backing_store =
gdk_window_create_similar_surface (gtk_widget_get_window (widget),
CAIRO_CONTENT_COLOR,
allocation.width,
allocation.height);
}
static int gtkDialogSetOpacityImageAttrib(Ihandle *ih, const char *value)
{
GdkPixbuf* pixbuf = iupImageGetImage(value, ih, 0);
if (pixbuf)
{
#if GTK_CHECK_VERSION(3, 0, 0)
GdkWindow* window = iupgtkGetWindow(ih->handle);
if (window)
{
cairo_region_t *shape;
#if GTK_CHECK_VERSION(3, 10, 0)
cairo_surface_t* surface = gdk_cairo_surface_create_from_pixbuf(pixbuf, 0, window);
#else
int width = gdk_pixbuf_get_width(pixbuf);
int height = gdk_pixbuf_get_height(pixbuf);
cairo_surface_t* surface = gdk_window_create_similar_surface(window, CAIRO_CONTENT_COLOR_ALPHA, width, height);
cairo_t* cr = cairo_create(surface);
gdk_cairo_set_source_pixbuf(cr, pixbuf, 0, 0);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_paint(cr);
cairo_destroy(cr);
#endif
shape = gdk_cairo_region_create_from_surface(surface);
cairo_surface_destroy(surface);
gtk_widget_shape_combine_region(ih->handle, shape);
cairo_region_destroy(shape);
}
#else
GdkBitmap* mask = NULL;
gdk_pixbuf_render_pixmap_and_mask(pixbuf, NULL, &mask, 255);
if (mask)
{
gtk_widget_shape_combine_mask(ih->handle, mask, 0, 0);
g_object_unref(mask);
}
#endif
return 1;
}
return 0;
}
/* Create a new surface of the appropriate size to store our scribbles */
static gboolean
configure_event_cb (GtkWidget *widget,
GdkEventConfigure *event,
gpointer data)
{
if (surface)
cairo_surface_destroy (surface);
surface = gdk_window_create_similar_surface (gtk_widget_get_window (widget),
CAIRO_CONTENT_COLOR,
gtk_widget_get_allocated_width (widget),
gtk_widget_get_allocated_height (widget));
/* Initialize the surface to white */
clear_surface ();
/* We've handled the configure event, no need for further processing. */
return TRUE;
}