cairo_surface_t *
CairoSurface::Cairo ()
{
return cairo_surface_create_for_rectangle (surface,
0,
0,
size[0],
size[1]);
}
static cairo_test_status_t
test_cairo_surface_create_for_rectangle (cairo_surface_t *surface)
{
cairo_surface_t *similar;
similar = cairo_surface_create_for_rectangle (surface, 1, 1, 8, 8);
cairo_surface_destroy (similar);
return CAIRO_TEST_SUCCESS;
}
void
workrave_timerbox_update_time_bars(WorkraveTimerbox *self, cairo_t *cr)
{
WorkraveTimerboxPrivate *priv = self->priv;
if (priv->enabled)
{
int x = 0, y = 0;
int bar_width, bar_height;
workrave_timebar_get_dimensions(priv->slot_to_time_bar[0], &bar_width, &bar_height);
int icon_width = gdk_pixbuf_get_width(priv->break_to_icon[0]);
int icon_height = gdk_pixbuf_get_height(priv->break_to_icon[0]);
int icon_bar_width = icon_width + 2 * PADDING_X + bar_width;
int icon_dy = 0;
int bar_dy = 0;
if (bar_height > icon_height)
{
icon_dy = (bar_height - icon_height + 1) / 2;
}
else
{
bar_dy = (icon_height - bar_height + 1) / 2;
}
for (int i = 0; i < BREAK_ID_SIZEOF; i++)
{
WorkraveBreakId bid = priv->slot_to_break[i];
if (bid != BREAK_ID_NONE)
{
WorkraveTimebar *bar = priv->slot_to_time_bar[bid];
cairo_surface_t *surface = cairo_get_target(cr);
cairo_surface_t *bar_surface = cairo_surface_create_for_rectangle(surface, x+icon_width+PADDING_X, y + bar_dy,
bar_width, bar_height);
cairo_t *bar_cr = cairo_create(bar_surface);
workrave_timebar_draw(bar, bar_cr);
cairo_surface_destroy(bar_surface);
cairo_destroy(bar_cr);
gdk_cairo_set_source_pixbuf(cr, priv->break_to_icon[bid], x, y + icon_dy);
cairo_fill(cr);
cairo_paint(cr);
x += icon_bar_width + 2 * PADDING_X;
}
}
}
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_surface_t *region[5];
const char *text = "Cairo";
int i;
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
cairo_set_source_rgb (cr, 0, 0, 0);
for (i = 0; i < 5; i++) {
cairo_t *cr_region;
cairo_text_extents_t extents;
char buf[2] = { text[i], '\0' };
region[i] = cairo_surface_create_for_rectangle (cairo_get_target (cr),
20 * i, 0, 20, 20);
cr_region = cairo_create (region[i]);
cairo_surface_destroy (region[i]);
cairo_select_font_face (cr_region, "@cairo:",
CAIRO_FONT_WEIGHT_NORMAL,
CAIRO_FONT_SLANT_NORMAL);
cairo_set_font_size (cr_region, 20);
cairo_text_extents (cr_region, buf, &extents);
cairo_move_to (cr_region,
10 - (extents.width/2 + extents.x_bearing),
10 - (extents.height/2 + extents.y_bearing));
cairo_show_text (cr_region, buf);
region[i] = cairo_surface_reference (cairo_get_target (cr_region));
cairo_destroy (cr_region);
}
for (i = 0; i < 5; i++) {
cairo_set_source_surface (cr, region[5-i-1], 20 * i, 20);
cairo_paint (cr);
}
for (i = 0; i < 5; i++) {
cairo_set_source_surface (cr, region[5-i-1], 20 * i, 40);
cairo_paint_with_alpha (cr, .5);
}
for (i = 0; i < 5; i++)
cairo_surface_destroy (region[i]);
return CAIRO_TEST_SUCCESS;
}
static int
create_for_rectangle(lua_State *L)
{
SurfaceUserdata *surface;
cairo_surface_t **obj = luaL_checkudata(L, 1, OOCAIRO_MT_NAME_SURFACE);
double x = luaL_checknumber(L, 2);
double y = luaL_checknumber(L, 3);
double width = luaL_checknumber(L, 4);
double height = luaL_checknumber(L, 5);
luaL_argcheck(L, width >= 0, 3, "surface width cannot be negative");
luaL_argcheck(L, height >= 0, 4, "surface height cannot be negative");
surface = create_surface_userdata(L);
surface->surface = cairo_surface_create_for_rectangle(*obj, x, y, width, height);
return 1;
}
static void
dv_export_viewports_to_img_r(dv_viewport_t * VP, cairo_surface_t * surface, double x, double y) {
if (!VP) {
return;
} else if (!VP->split) {
/* resize to remove ruler areas */
double surface_width = VP->vpw;// - 2 * DVG->opts.ruler_width;
double surface_height = VP->vph;// - 2 * DVG->opts.ruler_width;
cairo_surface_t * surface_child = cairo_surface_create_for_rectangle(surface, x, y, surface_width, surface_height);
dv_viewport_export_to_surface(VP, surface_child);
} else {
double w1, h1;
dv_export_viewports_get_size_r(VP->vp1, &w1, &h1);
if (VP->orientation == GTK_ORIENTATION_HORIZONTAL) {
dv_export_viewports_to_img_r(VP->vp1, surface, x, y);
dv_export_viewports_to_img_r(VP->vp2, surface, x + w1, y);
} else {
dv_export_viewports_to_img_r(VP->vp1, surface, x, y);
dv_export_viewports_to_img_r(VP->vp2, surface, x, y + h1);
}
}
}
static void
brush_end_element (GMarkupParseContext *context,
const gchar *element_name,
gpointer user_data,
GError **error)
{
GXPSBrush *brush = (GXPSBrush *)user_data;
if (strcmp (element_name, "SolidColorBrush") == 0) {
} else if (strcmp (element_name, "LinearGradientBrush") == 0) {
g_markup_parse_context_pop (context);
} else if (strcmp (element_name, "RadialGradientBrush") == 0) {
g_markup_parse_context_pop (context);
} else if (strcmp (element_name, "ImageBrush") == 0) {
GXPSBrushImage *brush_image;
GXPSImage *image;
GError *err = NULL;
brush_image = g_markup_parse_context_pop (context);
GXPS_DEBUG (g_message ("set_fill_pattern (image)"));
image = gxps_page_get_image (brush->ctx->page, brush_image->image_uri, &err);
if (image) {
cairo_matrix_t matrix;
gdouble x_scale, y_scale;
cairo_surface_t *clip_surface;
/* viewbox units is 1/96 inch, convert to pixels */
brush_image->viewbox.x *= image->res_x / 96;
brush_image->viewbox.y *= image->res_y / 96;
brush_image->viewbox.width *= image->res_x / 96;
brush_image->viewbox.height *= image->res_y / 96;
clip_surface = cairo_surface_create_for_rectangle (image->surface,
brush_image->viewbox.x,
brush_image->viewbox.y,
brush_image->viewbox.width,
brush_image->viewbox.height);
brush_image->brush->pattern = cairo_pattern_create_for_surface (clip_surface);
cairo_pattern_set_extend (brush_image->brush->pattern, brush_image->extend);
x_scale = brush_image->viewport.width / brush_image->viewbox.width;
y_scale = brush_image->viewport.height / brush_image->viewbox.height;
cairo_matrix_init (&matrix, x_scale, 0, 0, y_scale,
brush_image->viewport.x, brush_image->viewport.y);
cairo_matrix_multiply (&matrix, &matrix, &brush_image->matrix);
cairo_matrix_invert (&matrix);
cairo_pattern_set_matrix (brush_image->brush->pattern, &matrix);
if (brush->opacity != 1.0) {
cairo_push_group (brush->ctx->cr);
cairo_set_source (brush->ctx->cr, brush_image->brush->pattern);
cairo_pattern_destroy (brush_image->brush->pattern);
cairo_paint_with_alpha (brush->ctx->cr, brush->opacity);
brush_image->brush->pattern = cairo_pop_group (brush->ctx->cr);
}
if (cairo_pattern_status (brush_image->brush->pattern)) {
GXPS_DEBUG (g_debug ("%s", cairo_status_to_string (cairo_pattern_status (brush_image->brush->pattern))));
cairo_pattern_destroy (brush_image->brush->pattern);
brush_image->brush->pattern = NULL;
}
cairo_surface_destroy (clip_surface);
} else if (err) {
GXPS_DEBUG (g_debug ("%s", err->message));
g_error_free (err);
}
gxps_brush_image_free (brush_image);
} else if (strcmp (element_name, "VisualBrush") == 0) {
GXPSRenderContext *sub_ctx;
GXPSBrushVisual *visual;
cairo_matrix_t matrix;
sub_ctx = g_markup_parse_context_pop (context);
visual = sub_ctx->visual;
g_slice_free (GXPSRenderContext, sub_ctx);
GXPS_DEBUG (g_message ("set_fill_pattern (visual)"));
visual->brush->pattern = cairo_pop_group (brush->ctx->cr);
/* Undo the clip */
cairo_restore (brush->ctx->cr);
cairo_pattern_set_extend (visual->brush->pattern, visual->extend);
cairo_pattern_get_matrix (visual->brush->pattern, &matrix);
cairo_matrix_multiply (&matrix, &visual->matrix, &matrix);
cairo_pattern_set_matrix (visual->brush->pattern, &matrix);
if (cairo_pattern_status (visual->brush->pattern)) {
GXPS_DEBUG (g_debug ("%s", cairo_status_to_string (cairo_pattern_status (visual->brush->pattern))));
cairo_pattern_destroy (visual->brush->pattern);
visual->brush->pattern = NULL;
}
gxps_brush_visual_free (visual);
} else {
gxps_parse_error (context,
brush->ctx->page->priv->source,
G_MARKUP_ERROR_UNKNOWN_ELEMENT,
element_name, NULL, NULL, error);
}
}
/* We double buffer the image. It looks nice and it enables
* grabbing the graph with the pointer and translating it.
* We draw on our own larger surface and then copy part of that
* to the gdk surface.
*
* We assume that this function is drawing to an exposed/showing
* drawing area, so the status update will reflect the current
* exposed/showing drawing area. */
void qp_graph_draw(struct qp_graph *gr, cairo_t *gdk_cr)
{
GtkAllocation allocation;
if(gr->waiting_to_resize_draw && !gr->qp->shape)
{
//WARN("gr=%p gr->name=\"%s\" gr->ref_count=%d\n", gr, gr->name, gr->ref_count);
cairo_set_source_rgba(gdk_cr, gr->background_color.r,
gr->background_color.g, gr->background_color.b,
gr->background_color.a);
cairo_paint(gdk_cr);
g_idle_add_full(G_PRIORITY_LOW, idle_callback, gr, NULL);
/* fight qp_graph_destroy() race condition with flag */
++gr->ref_count;
/* We draw after the other widgets are drawn, in case drawing
* takes a long time. This waiting also gives a chance
* for the watch cursor to show. But that seems to only
* show if the window had focus at the right time. */
return;
}
gtk_widget_get_allocation(gr->drawing_area, &allocation);
if(gr->pixbuf_needs_draw)
{
cairo_t *db_cr; /* double buffer cr */
db_cr = cairo_create(gr->pixbuf_surface);
graph_draw(gr, db_cr, gr->pixbuf_x, gr->pixbuf_y,
gr->pixbuf_width, gr->pixbuf_height);
cairo_destroy(db_cr);
// debuging
//cairo_surface_write_to_png(gr->pixbuf_surface, "x.png");
qp_win_set_status(gr->qp);
}
/* the GTK cairo_t *gdk_cr has no alpha bits so all the
* alpha drawn to it will be smushed. */
//WARN("content=0x%lx\n", (unsigned long)cairo_get_target(gdk_cr));
if(!gr->qp->shape)
{
/* Not using the shape X11 extension */
/* This is where we go from the back buffer to the drawing area */
draw_from_pixbuf(gdk_cr, gr, allocation.width, allocation.height);
if(gr->draw_zoom_box == 1)
draw_zoom_box(gdk_cr, gr);
if(gr->draw_value_pick)
draw_value_pick_line(gdk_cr, gr, allocation.width, allocation.height);
if(gr->pixbuf_needs_draw)
{
gdk_window_set_cursor(gtk_widget_get_window(gr->qp->window), NULL);
gr->pixbuf_needs_draw = 0;
// gr->qp->wait_warning_showing = 0;
}
}
else
{
/* Use the X11 shape extension */
/* TODO: This is a resource pig. Fix it. */
cairo_region_t *reg_draw_area, *window_region;
/* empty flag */
int empty;
cairo_surface_t *mask_surface;
GtkAllocation all;
/* Make sure the surface is up to date */
//cairo_surface_flush(gr->pixbuf_surface);
/* make a sub surface that is the size of the graph drawing area */
mask_surface = cairo_surface_create_for_rectangle(gr->pixbuf_surface,
INT(gr->pixbuf_x+gr->grab_x),
INT(gr->pixbuf_y+gr->grab_y),
allocation.width, allocation.height);
reg_draw_area = get_cairo_region_create_from_surface(gr,
mask_surface, allocation.width, allocation.height);
cairo_surface_destroy(mask_surface);
cairo_region_translate(reg_draw_area, allocation.x, allocation.y);
gtk_widget_get_allocation(gr->qp->window, &all);
all.x = all.y = 0;
window_region = cairo_region_create_rectangle(&all);
cairo_region_subtract_rectangle(window_region, &allocation);
empty = cairo_region_is_empty(reg_draw_area);
if(!empty)
cairo_region_union(window_region, reg_draw_area);
cairo_region_destroy(reg_draw_area);
/* window_region is a region with a hole in it the
* size of the drawing area with the graph and grid added back. */
if(gr->draw_zoom_box && !empty)
{
cairo_rectangle_int_t rec;
rec.x = allocation.x + gr->z_x;
rec.y = allocation.y + gr->z_y;
rec.width = gr->z_w;
rec.height = gr->z_h;
/* regions do not like negitive values or
* maybe shapes do not like negitive values
* in any case we keep width and height
* positive */
if(rec.width < 0)
{
rec.width *= -1;
rec.x -= rec.width;
}
if(rec.height < 0)
{
rec.height *= -1;
rec.y -= rec.height;
}
cairo_region_union_rectangle(window_region, &rec);
/* now we have the zoom box added to window_region */
}
/* This is where we go from the back buffer to the drawing area */
draw_from_pixbuf(gdk_cr, gr, allocation.width, allocation.height);
if(gr->draw_zoom_box)
draw_zoom_box(gdk_cr, gr);
if(gr->draw_value_pick)
draw_value_pick_line(gdk_cr, gr, allocation.width, allocation.height);
if(empty)
{
/* we have nothing to make a shape with */
if(gr->qp->last_shape_region)
{
cairo_region_destroy(gr->qp->last_shape_region);
gr->qp->last_shape_region = NULL;
}
cairo_region_destroy(window_region);
/* remove the old shape region */
gtk_widget_shape_combine_region(gr->qp->window, NULL);
}
else if(!gr->qp->last_shape_region ||
!cairo_region_equal(gr->qp->last_shape_region, window_region))
{
// DEBUG("creating new shape region\n");
/* We need to undo the old shape first */
gtk_widget_shape_combine_region(gr->qp->window, NULL);
gtk_widget_shape_combine_region(gr->qp->window, window_region);
if(gr->qp->last_shape_region)
cairo_region_destroy(gr->qp->last_shape_region);
gr->qp->last_shape_region = window_region;
}
else
cairo_region_destroy(window_region);
gr->pixbuf_needs_draw = 0;
gdk_window_set_cursor(gtk_widget_get_window(gr->qp->window), NULL);
// debuging
//cairo_surface_write_to_png(cairo_get_target(gdk_cr), "y.png");
}
if(gr->qp->update_graph_detail && gr->qp->graph_detail)
{
gr->qp->update_graph_detail = 0;
/* make the graph configure window show stuff about this graph */
qp_win_graph_detail_init(gr->qp);
}
}
static void
gtk_border_image_render (GtkBorderImage *image,
const double border_width[4],
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height)
{
cairo_surface_t *surface, *slice;
GtkBorderImageSliceSize vertical_slice[3], horizontal_slice[3];
GtkBorderImageSliceSize vertical_border[3], horizontal_border[3];
double source_width, source_height;
int h, v;
_gtk_css_image_get_concrete_size (image->source,
0, 0,
width, height,
&source_width, &source_height);
/* XXX: Optimize for (source_width == width && source_height == height) */
surface = _gtk_css_image_get_surface (image->source,
cairo_get_target (cr),
source_width, source_height);
gtk_border_image_compute_slice_size (horizontal_slice,
source_width,
_gtk_css_number_value_get (_gtk_css_border_value_get_left (image->slice), source_width),
_gtk_css_number_value_get (_gtk_css_border_value_get_right (image->slice), source_width));
gtk_border_image_compute_slice_size (vertical_slice,
source_height,
_gtk_css_number_value_get (_gtk_css_border_value_get_top (image->slice), source_height),
_gtk_css_number_value_get (_gtk_css_border_value_get_bottom (image->slice), source_height));
gtk_border_image_compute_border_size (horizontal_border,
x,
width,
border_width[GTK_CSS_LEFT],
border_width[GTK_CSS_RIGHT],
_gtk_css_border_value_get_left (image->width),
_gtk_css_border_value_get_right (image->width));
gtk_border_image_compute_border_size (vertical_border,
y,
height,
border_width[GTK_CSS_TOP],
border_width[GTK_CSS_BOTTOM],
_gtk_css_border_value_get_top (image->width),
_gtk_css_border_value_get_bottom(image->width));
for (v = 0; v < 3; v++)
{
if (vertical_slice[v].size == 0 ||
vertical_border[v].size == 0)
continue;
for (h = 0; h < 3; h++)
{
if (horizontal_slice[h].size == 0 ||
horizontal_border[h].size == 0)
continue;
if (h == 1 && v == 1)
continue;
slice = cairo_surface_create_for_rectangle (surface,
horizontal_slice[h].offset,
vertical_slice[v].offset,
horizontal_slice[h].size,
vertical_slice[v].size);
gtk_border_image_render_slice (cr,
slice,
horizontal_slice[h].size,
vertical_slice[v].size,
horizontal_border[h].offset,
vertical_border[v].offset,
horizontal_border[h].size,
vertical_border[v].size,
h == 1 ? _gtk_css_border_repeat_value_get_x (image->repeat) : GTK_CSS_REPEAT_STYLE_STRETCH,
v == 1 ? _gtk_css_border_repeat_value_get_y (image->repeat) : GTK_CSS_REPEAT_STYLE_STRETCH);
cairo_surface_destroy (slice);
}
}
cairo_surface_destroy (surface);
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_surface_t *region, *similar;
cairo_t *cr_region, *cr_similar;
cairo_set_source_rgb (cr, .5, .5, .5);
cairo_paint (cr);
similar = cairo_surface_create_similar (cairo_get_target (cr),
CAIRO_CONTENT_COLOR_ALPHA,
20, 20);
/* copy the centre */
cr_similar = cairo_create (similar);
cairo_surface_destroy (similar);
cairo_set_source_surface (cr_similar, cairo_get_target (cr), -20, -20);
cairo_paint (cr_similar);
similar = cairo_surface_reference (cairo_get_target (cr_similar));
cairo_destroy (cr_similar);
/* fill the centre */
region = cairo_surface_create_for_rectangle (cairo_get_target (cr),
20, 20, 20, 20);
cr_region = cairo_create (region);
cairo_surface_destroy (region);
cairo_set_source_rgb (cr_region, 1, 1, 1);
cairo_rectangle (cr_region, 0, 0, 10, 10);
cairo_fill (cr_region);
cairo_set_source_rgb (cr_region, 1, 0, 0);
cairo_rectangle (cr_region, 10, 0, 10, 10);
cairo_fill (cr_region);
cairo_set_source_rgb (cr_region, 0, 1, 0);
cairo_rectangle (cr_region, 0, 10, 10, 10);
cairo_fill (cr_region);
cairo_set_source_rgb (cr_region, 0, 0, 1);
cairo_rectangle (cr_region, 10, 10, 10, 10);
cairo_fill (cr_region);
cairo_destroy (cr_region);
/* copy the centre, again */
cr_similar = cairo_create (similar);
cairo_surface_destroy (similar);
cairo_set_source_surface (cr_similar, cairo_get_target (cr), -20, -20);
cairo_paint (cr_similar);
similar = cairo_surface_reference (cairo_get_target (cr_similar));
cairo_destroy (cr_similar);
/* repeat the pattern around the outside, but do not overwrite...*/
cairo_set_source_surface (cr, similar, 20, 20);
cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_REPEAT);
cairo_rectangle (cr, 0, 0, width, height);
cairo_rectangle (cr, 20, 40, 20, -20);
cairo_fill (cr);
cairo_surface_destroy (similar);
return CAIRO_TEST_SUCCESS;
}
void PlatformContextCairo::drawSurfaceToContext(cairo_surface_t* surface, const FloatRect& destRect, const FloatRect& originalSrcRect, GraphicsContext* context)
{
FloatRect srcRect = originalSrcRect;
// We need to account for negative source dimensions by flipping the rectangle.
if (originalSrcRect.width() < 0) {
srcRect.setX(originalSrcRect.x() + originalSrcRect.width());
srcRect.setWidth(std::fabs(originalSrcRect.width()));
}
if (originalSrcRect.height() < 0) {
srcRect.setY(originalSrcRect.y() + originalSrcRect.height());
srcRect.setHeight(std::fabs(originalSrcRect.height()));
}
// Cairo subsurfaces don't support floating point boundaries well, so we expand the rectangle.
IntRect expandedSrcRect(enclosingIntRect(srcRect));
// We use a subsurface here so that we don't end up sampling outside the originalSrcRect rectangle.
// See https://bugs.webkit.org/show_bug.cgi?id=58309
RefPtr<cairo_surface_t> subsurface = adoptRef(cairo_surface_create_for_rectangle(
surface, expandedSrcRect.x(), expandedSrcRect.y(), expandedSrcRect.width(), expandedSrcRect.height()));
RefPtr<cairo_pattern_t> pattern = adoptRef(cairo_pattern_create_for_surface(subsurface.get()));
ASSERT(m_state);
switch (m_state->m_imageInterpolationQuality) {
case InterpolationNone:
case InterpolationLow:
cairo_pattern_set_filter(pattern.get(), CAIRO_FILTER_FAST);
break;
case InterpolationMedium:
case InterpolationHigh:
cairo_pattern_set_filter(pattern.get(), CAIRO_FILTER_BILINEAR);
break;
case InterpolationDefault:
cairo_pattern_set_filter(pattern.get(), CAIRO_FILTER_BILINEAR);
break;
}
cairo_pattern_set_extend(pattern.get(), CAIRO_EXTEND_PAD);
// The pattern transformation properly scales the pattern for when the source rectangle is a
// different size than the destination rectangle. We also account for any offset we introduced
// by expanding floating point source rectangle sizes. It's important to take the absolute value
// of the scale since the original width and height might be negative.
float scaleX = std::fabs(srcRect.width() / destRect.width());
float scaleY = std::fabs(srcRect.height() / destRect.height());
float leftPadding = static_cast<float>(expandedSrcRect.x()) - floorf(srcRect.x());
float topPadding = static_cast<float>(expandedSrcRect.y()) - floorf(srcRect.y());
cairo_matrix_t matrix = { scaleX, 0, 0, scaleY, leftPadding, topPadding };
cairo_pattern_set_matrix(pattern.get(), &matrix);
ShadowBlur& shadow = context->platformContext()->shadowBlur();
if (shadow.type() != ShadowBlur::NoShadow) {
if (GraphicsContext* shadowContext = shadow.beginShadowLayer(context, destRect)) {
drawPatternToCairoContext(shadowContext->platformContext()->cr(), pattern.get(), destRect, 1);
shadow.endShadowLayer(context);
}
}
cairo_save(m_cr.get());
drawPatternToCairoContext(m_cr.get(), pattern.get(), destRect, globalAlpha());
cairo_restore(m_cr.get());
}
