* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
+#include "config.h"
+
#include "gtkcsstypesprivate.h"
#include "gtkthemingbackgroundprivate.h"
#include "gtkthemingengineprivate.h"
+#include <math.h>
+
#include <gdk/gdk.h>
+/* this is in case round() is not provided by the compiler,
+ * such as in the case of C89 compilers, like MSVC
+ */
+#include "fallback-c89.c"
+
static void
_gtk_theming_background_apply_window_background (GtkThemingBackground *bg,
cairo_t *cr)
{
- if (gtk_theming_engine_has_class (bg->engine, "background"))
+ if (gtk_style_context_has_class (bg->context, "background"))
{
cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.0); /* transparent */
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
GtkCssArea origin;
cairo_rectangle_t image_rect;
- gtk_theming_engine_get (bg->engine, bg->flags,
- "background-origin", &origin,
- NULL);
+ gtk_style_context_get (bg->context, bg->flags,
+ "background-origin", &origin,
+ NULL);
/* The default size of the background image depends on the
background-origin value as this affects the top left
break;
}
+ /* XXX: image_rect might have negative width/height here.
+ * Do we need to do something about it? */
bg->image_rect = image_rect;
}
{
GtkCssArea clip;
- gtk_theming_engine_get (bg->engine, bg->flags,
- "background-clip", &clip,
- NULL);
+ gtk_style_context_get (bg->context, bg->flags,
+ "background-clip", &clip,
+ NULL);
if (clip == GTK_CSS_AREA_PADDING_BOX)
{
}
}
+static void
+_gtk_theming_background_get_cover_contain (GtkCssImage *image,
+ gboolean cover,
+ double width,
+ double height,
+ double *concrete_width,
+ double *concrete_height)
+{
+ double aspect, image_aspect;
+
+ image_aspect = _gtk_css_image_get_aspect_ratio (image);
+ if (image_aspect == 0.0)
+ {
+ *concrete_width = width;
+ *concrete_height = height;
+ return;
+ }
+
+ aspect = width / height;
+
+ if ((aspect >= image_aspect && cover) ||
+ (aspect < image_aspect && !cover))
+ {
+ *concrete_width = width;
+ *concrete_height = width / image_aspect;
+ }
+ else
+ {
+ *concrete_height = height;
+ *concrete_width = height * image_aspect;
+ }
+}
+
static void
_gtk_theming_background_paint (GtkThemingBackground *bg,
cairo_t *cr)
{
+ cairo_save (cr);
+
_gtk_rounded_box_path (&bg->clip_box, cr);
+ cairo_clip (cr);
+
gdk_cairo_set_source_rgba (cr, &bg->bg_color);
+ cairo_paint (cr);
- if (bg->pattern)
+ if (bg->image
+ && bg->image_rect.width > 0
+ && bg->image_rect.height > 0)
{
- GtkCssBackgroundRepeat *repeat;
- cairo_surface_t *surface;
- int scale_width, scale_height;
-
- gtk_theming_engine_get (bg->engine, bg->flags,
- "background-repeat", &repeat,
- NULL);
-
- if (cairo_pattern_get_surface (bg->pattern, &surface) != CAIRO_STATUS_SUCCESS)
- surface = NULL;
-
- if (surface && repeat)
- {
- scale_width = cairo_image_surface_get_width (surface);
- scale_height = cairo_image_surface_get_height (surface);
- if (repeat->repeat == GTK_CSS_BACKGROUND_REPEAT_STYLE_REPEAT)
- cairo_pattern_set_extend (bg->pattern, CAIRO_EXTEND_REPEAT);
- else if (repeat->repeat == GTK_CSS_BACKGROUND_REPEAT_STYLE_NO_REPEAT)
- cairo_pattern_set_extend (bg->pattern, CAIRO_EXTEND_NONE);
- }
+ GtkCssBackgroundRepeat hrepeat, vrepeat;
+ GtkCssBackgroundSize *size;
+ double image_width, image_height;
+ double width, height;
+
+ size = g_value_get_boxed (_gtk_style_context_peek_property (bg->context, "background-size"));
+ gtk_style_context_get (bg->context, bg->flags,
+ "background-repeat", &hrepeat,
+ NULL);
+ vrepeat = GTK_CSS_BACKGROUND_VERTICAL (hrepeat);
+ hrepeat = GTK_CSS_BACKGROUND_HORIZONTAL (hrepeat);
+ width = bg->image_rect.width;
+ height = bg->image_rect.height;
+
+ if (size->contain || size->cover)
+ _gtk_theming_background_get_cover_contain (bg->image,
+ size->cover,
+ width,
+ height,
+ &image_width,
+ &image_height);
else
+ _gtk_css_image_get_concrete_size (bg->image,
+ /* note: 0 does the right thing here for 'auto' */
+ _gtk_css_number_get (&size->width, width),
+ _gtk_css_number_get (&size->height, height),
+ width, height,
+ &image_width, &image_height);
+
+ /* optimization */
+ if (image_width == width)
+ hrepeat = GTK_CSS_BACKGROUND_NO_REPEAT;
+ if (image_height == height)
+ vrepeat = GTK_CSS_BACKGROUND_NO_REPEAT;
+
+ cairo_translate (cr, bg->image_rect.x, bg->image_rect.y);
+
+ if (hrepeat == GTK_CSS_BACKGROUND_NO_REPEAT && vrepeat == GTK_CSS_BACKGROUND_NO_REPEAT)
{
- cairo_pattern_set_extend (bg->pattern, CAIRO_EXTEND_PAD);
- scale_width = bg->image_rect.width;
- scale_height = bg->image_rect.height;
+ /* shortcut for normal case */
+ _gtk_css_image_draw (bg->image, cr, image_width, image_height);
}
-
- if (scale_width && scale_height)
+ else
{
- /* Fill background color first */
- cairo_fill_preserve (cr);
-
- cairo_translate (cr, bg->image_rect.x, bg->image_rect.y);
- cairo_scale (cr, scale_width, scale_height);
- cairo_set_source (cr, bg->pattern);
- cairo_scale (cr, 1.0 / scale_width, 1.0 / scale_height);
- cairo_translate (cr, -bg->image_rect.x, -bg->image_rect.y);
-
- g_free (repeat);
-
- cairo_pattern_destroy (bg->pattern);
- bg->pattern = NULL;
+ int surface_width, surface_height;
+ cairo_surface_t *surface;
+ cairo_t *cr2;
+
+ /* If ‘background-repeat’ is ‘round’ for one (or both) dimensions,
+ * there is a second step. The UA must scale the image in that
+ * dimension (or both dimensions) so that it fits a whole number of
+ * times in the background positioning area. In the case of the width
+ * (height is analogous):
+ *
+ * If X ≠ 0 is the width of the image after step one and W is the width
+ * of the background positioning area, then the rounded width
+ * X' = W / round(W / X) where round() is a function that returns the
+ * nearest natural number (integer greater than zero).
+ *
+ * If ‘background-repeat’ is ‘round’ for one dimension only and if
+ * ‘background-size’ is ‘auto’ for the other dimension, then there is
+ * a third step: that other dimension is scaled so that the original
+ * aspect ratio is restored.
+ */
+ if (hrepeat == GTK_CSS_BACKGROUND_ROUND)
+ {
+ double n = round (width / image_width);
+
+ n = MAX (1, n);
+
+ if (vrepeat != GTK_CSS_BACKGROUND_ROUND
+ /* && vsize == auto (it is by default) */)
+ image_height *= width / (image_width * n);
+ image_width = width / n;
+ }
+ if (vrepeat == GTK_CSS_BACKGROUND_ROUND)
+ {
+ double n = round (height / image_height);
+
+ n = MAX (1, n);
+
+ if (hrepeat != GTK_CSS_BACKGROUND_ROUND
+ /* && hsize == auto (it is by default) */)
+ image_width *= height / (image_height * n);
+ image_height = height / n;
+ }
+
+ /* if hrepeat or vrepeat is 'space', we create a somewhat larger surface
+ * to store the extra space. */
+ if (hrepeat == GTK_CSS_BACKGROUND_SPACE)
+ {
+ double n = floor (width / image_width);
+ surface_width = n ? round (width / n) : 0;
+ }
+ else
+ surface_width = round (image_width);
+
+ if (vrepeat == GTK_CSS_BACKGROUND_SPACE)
+ {
+ double n = floor (height / image_height);
+ surface_height = n ? round (height / n) : 0;
+ }
+ else
+ surface_height = round (image_height);
+
+ surface = cairo_surface_create_similar (cairo_get_target (cr),
+ CAIRO_CONTENT_COLOR_ALPHA,
+ surface_width, surface_height);
+ cr2 = cairo_create (surface);
+ cairo_translate (cr2,
+ 0.5 * (surface_width - image_width),
+ 0.5 * (surface_height - image_height));
+ _gtk_css_image_draw (bg->image, cr2, image_width, image_height);
+ cairo_destroy (cr2);
+
+ cairo_set_source_surface (cr, surface,
+ /* background-position goes here */
+ 0, 0);
+ cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_REPEAT);
+ cairo_surface_destroy (surface);
+
+ cairo_rectangle (cr,
+ 0, 0,
+ hrepeat == GTK_CSS_BACKGROUND_NO_REPEAT ? image_width : width,
+ vrepeat == GTK_CSS_BACKGROUND_NO_REPEAT ? image_height : height);
+ cairo_fill (cr);
}
}
- cairo_fill (cr);
+ cairo_restore (cr);
}
static void
{
GtkShadow *box_shadow;
- gtk_theming_engine_get (bg->engine, bg->flags,
- "box-shadow", &box_shadow,
- NULL);
+ gtk_style_context_get (bg->context, bg->flags,
+ "box-shadow", &box_shadow,
+ NULL);
if (box_shadow != NULL)
{
}
static void
-_gtk_theming_background_init_engine (GtkThemingBackground *bg)
+_gtk_theming_background_init_context (GtkThemingBackground *bg)
{
- bg->flags = gtk_theming_engine_get_state (bg->engine);
+ bg->flags = gtk_style_context_get_state (bg->context);
- gtk_theming_engine_get_border (bg->engine, bg->flags, &bg->border);
- gtk_theming_engine_get_padding (bg->engine, bg->flags, &bg->padding);
- gtk_theming_engine_get_background_color (bg->engine, bg->flags, &bg->bg_color);
+ gtk_style_context_get_border (bg->context, bg->flags, &bg->border);
+ gtk_style_context_get_padding (bg->context, bg->flags, &bg->padding);
+ gtk_style_context_get_background_color (bg->context, bg->flags, &bg->bg_color);
/* In the CSS box model, by default the background positioning area is
* the padding-box, i.e. all the border-box minus the borders themselves,
* right now we just shrink to the default.
*/
_gtk_rounded_box_init_rect (&bg->padding_box, 0, 0, bg->paint_area.width, bg->paint_area.height);
- _gtk_rounded_box_apply_border_radius (&bg->padding_box, bg->engine, bg->flags, bg->junction);
+
+ _gtk_rounded_box_apply_border_radius_for_context (&bg->padding_box, bg->context, bg->flags, bg->junction);
bg->clip_box = bg->padding_box;
_gtk_rounded_box_shrink (&bg->padding_box,
_gtk_theming_background_apply_clip (bg);
_gtk_theming_background_apply_origin (bg);
- gtk_theming_engine_get (bg->engine, bg->flags,
- "background-image", &bg->pattern,
- NULL);
+ bg->image = g_value_get_object (_gtk_style_context_peek_property (bg->context, "background-image"));
}
void
gdouble width,
gdouble height,
GtkJunctionSides junction)
+{
+ GtkStyleContext *context;
+
+ g_assert (bg != NULL);
+
+ context = _gtk_theming_engine_get_context (engine);
+ _gtk_theming_background_init_from_context (bg, context,
+ x, y, width, height,
+ junction);
+}
+
+void
+_gtk_theming_background_init_from_context (GtkThemingBackground *bg,
+ GtkStyleContext *context,
+ gdouble x,
+ gdouble y,
+ gdouble width,
+ gdouble height,
+ GtkJunctionSides junction)
{
g_assert (bg != NULL);
- bg->engine = engine;
+ bg->context = context;
bg->paint_area.x = x;
bg->paint_area.y = y;
bg->paint_area.width = width;
bg->paint_area.height = height;
- bg->pattern = NULL;
+ bg->image = NULL;
bg->junction = junction;
- _gtk_theming_background_init_engine (bg);
+ _gtk_theming_background_init_context (bg);
}
void
gboolean
_gtk_theming_background_has_background_image (GtkThemingBackground *bg)
{
- return (bg->pattern != NULL) ? TRUE : FALSE;
+ return (bg->image != NULL) ? TRUE : FALSE;
}
projects / ~andy / gtk / blobdiff