* 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 "gtkcolorscale.h"
-#include "gtkhsv.h"
+#include "gtkcolorscaleprivate.h"
+
+#include "gtkcolorchooserprivate.h"
+#include "gtkcolorutils.h"
+#include "gtkorientable.h"
#include "gtkstylecontext.h"
+#include "gtkaccessible.h"
+#include "gtkpressandholdprivate.h"
+#include "gtkprivate.h"
#include "gtkintl.h"
+#include <math.h>
+
struct _GtkColorScalePrivate
{
cairo_surface_t *surface;
gint width, height;
GdkRGBA color;
GtkColorScaleType type;
-};
-G_DEFINE_TYPE (GtkColorScale, gtk_color_scale, GTK_TYPE_SCALE)
+ GtkPressAndHold *press_and_hold;
+};
-static cairo_pattern_t *
-get_checkered_pattern (void)
+enum
{
- /* need to respect pixman's stride being a multiple of 4 */
- static unsigned char data[8] = { 0xFF, 0x00, 0x00, 0x00,
- 0x00, 0xFF, 0x00, 0x00 };
- static cairo_surface_t *checkered = NULL;
- cairo_pattern_t *pattern;
-
- if (checkered == NULL)
- checkered = cairo_image_surface_create_for_data (data,
- CAIRO_FORMAT_A8,
- 2, 2, 4);
-
- pattern = cairo_pattern_create_for_surface (checkered);
- cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
- cairo_pattern_set_filter (pattern, CAIRO_FILTER_NEAREST);
+ PROP_ZERO,
+ PROP_SCALE_TYPE
+};
- return pattern;
-}
+G_DEFINE_TYPE (GtkColorScale, gtk_color_scale, GTK_TYPE_SCALE)
static void
-create_h_surface (GtkColorScale *scale)
+gtk_color_scale_get_trough_size (GtkColorScale *scale,
+ gint *x_offset_out,
+ gint *y_offset_out,
+ gint *width_out,
+ gint *height_out)
{
GtkWidget *widget = GTK_WIDGET (scale);
- cairo_t *cr;
- cairo_surface_t *surface;
- gint width, height, stride;
- cairo_surface_t *tmp;
- guint red, green, blue;
- guint32 *data, *p;
- gdouble h;
- gdouble r, g, b;
- gdouble f;
- gint x, y;
+ gint width, height, focus_line_width, focus_padding;
+ gint x_offset, y_offset;
+ gint slider_width, slider_height;
- if (!gtk_widget_get_realized (widget))
- return;
+ gtk_widget_style_get (widget,
+ "focus-line-width", &focus_line_width,
+ "focus-padding", &focus_padding,
+ "slider-width", &slider_width,
+ "slider-length", &slider_height,
+ NULL);
- width = gtk_widget_get_allocated_width (widget);
- height = gtk_widget_get_allocated_height (widget);
+ width = gtk_widget_get_allocated_width (widget) - 2 * (focus_line_width + focus_padding);
+ height = gtk_widget_get_allocated_height (widget) - 2 * (focus_line_width + focus_padding);
- if (width != scale->priv->width ||
- height != scale->priv->height)
- {
- surface = gdk_window_create_similar_surface (gtk_widget_get_window (widget),
- CAIRO_CONTENT_COLOR,
- width, height);
- if (scale->priv->surface)
- cairo_surface_destroy (scale->priv->surface);
- scale->priv->surface = surface;
- scale->priv->width = width;
- scale->priv->height= height;
- }
- else
- surface = scale->priv->surface;
-
- if (width == 1 || height == 1)
- return;
-
- stride = cairo_format_stride_for_width (CAIRO_FORMAT_RGB24, width);
+ x_offset = focus_line_width + focus_padding;
+ y_offset = focus_line_width + focus_padding;
- data = g_malloc (height * stride);
-
- f = 1.0 / (height - 1);
- for (y = 0; y < height; y++)
+ /* if the slider has a vertical shape, draw the trough asymmetric */
+ if (slider_width > slider_height)
{
- h = CLAMP (y * f, 0.0, 1.0);
- p = data + y * (stride / 4);
- for (x = 0; x < width; x++)
+ if (gtk_orientable_get_orientation (GTK_ORIENTABLE (widget)) == GTK_ORIENTATION_VERTICAL)
+ {
+ if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
+ x_offset += (gint) floor (slider_width / 2.0);
+
+ width = (gint) floor (slider_width / 2.0);
+ }
+ else
{
- gtk_hsv_to_rgb (h, 1, 1, &r, &g, &b);
- red = CLAMP (r * 255, 0, 255);
- green = CLAMP (g * 255, 0, 255);
- blue = CLAMP (b * 255, 0, 255);
- p[x] = (red << 16) | (green << 8) | blue;
+ height = (gint) floor (slider_width / 2.0);
}
}
- tmp = cairo_image_surface_create_for_data ((guchar *)data, CAIRO_FORMAT_RGB24,
- width, height, stride);
- cr = cairo_create (surface);
-
- cairo_set_source_surface (cr, tmp, 0, 0);
- cairo_paint (cr);
-
- cairo_destroy (cr);
- cairo_surface_destroy (tmp);
- g_free (data);
+ if (width_out)
+ *width_out = width;
+ if (height_out)
+ *height_out = height;
+ if (x_offset_out)
+ *x_offset_out = x_offset;
+ if (y_offset_out)
+ *y_offset_out = y_offset;
}
static void
-create_a_surface (GtkColorScale *scale)
+create_surface (GtkColorScale *scale)
{
GtkWidget *widget = GTK_WIDGET (scale);
- cairo_t *cr;
cairo_surface_t *surface;
- cairo_pattern_t *pattern;
- cairo_matrix_t matrix;
- GdkRGBA *color;
gint width, height;
if (!gtk_widget_get_realized (widget))
return;
- width = gtk_widget_get_allocated_width (widget);
- height = gtk_widget_get_allocated_height (widget);
+ gtk_color_scale_get_trough_size (scale,
+ NULL, NULL,
+ &width, &height);
if (!scale->priv->surface ||
width != scale->priv->width ||
cairo_surface_destroy (scale->priv->surface);
scale->priv->surface = surface;
scale->priv->width = width;
- scale->priv->height = height;
+ scale->priv->height= height;
}
else
- return;
+ surface = scale->priv->surface;
if (width == 1 || height == 1)
return;
- cr = cairo_create (surface);
+ if (scale->priv->type == GTK_COLOR_SCALE_HUE)
+ {
+ cairo_t *cr;
+ gint stride;
+ cairo_surface_t *tmp;
+ guint red, green, blue;
+ guint32 *data, *p;
+ gdouble h;
+ gdouble r, g, b;
+ gdouble f;
+ gint x, y;
+
+ stride = cairo_format_stride_for_width (CAIRO_FORMAT_RGB24, width);
+
+ data = g_malloc (height * stride);
+
+ f = 1.0 / (height - 1);
+ for (y = 0; y < height; y++)
+ {
+ h = CLAMP (y * f, 0.0, 1.0);
+ p = data + y * (stride / 4);
+ for (x = 0; x < width; x++)
+ {
+ gtk_hsv_to_rgb (h, 1, 1, &r, &g, &b);
+ red = CLAMP (r * 255, 0, 255);
+ green = CLAMP (g * 255, 0, 255);
+ blue = CLAMP (b * 255, 0, 255);
+ p[x] = (red << 16) | (green << 8) | blue;
+ }
+ }
- cairo_set_source_rgb (cr, 0.33, 0.33, 0.33);
- cairo_paint (cr);
- cairo_set_source_rgb (cr, 0.66, 0.66, 0.66);
+ tmp = cairo_image_surface_create_for_data ((guchar *)data, CAIRO_FORMAT_RGB24,
+ width, height, stride);
+ cr = cairo_create (surface);
- pattern = get_checkered_pattern ();
- cairo_matrix_init_scale (&matrix, 0.125, 0.125);
- cairo_pattern_set_matrix (pattern, &matrix);
- cairo_mask (cr, pattern);
- cairo_pattern_destroy (pattern);
+ cairo_set_source_surface (cr, tmp, 0, 0);
+ cairo_paint (cr);
- color = &scale->priv->color;
+ cairo_destroy (cr);
+ cairo_surface_destroy (tmp);
+ g_free (data);
+ }
+ else if (scale->priv->type == GTK_COLOR_SCALE_ALPHA)
+ {
+ cairo_t *cr;
+ cairo_pattern_t *pattern;
+ cairo_matrix_t matrix;
+ GdkRGBA *color;
- pattern = cairo_pattern_create_linear (0, 0, width, 0);
- cairo_pattern_add_color_stop_rgba (pattern, 0, color->red, color->green, color->blue, 0);
- cairo_pattern_add_color_stop_rgba (pattern, width, color->red, color->green, color->blue, 1);
- cairo_set_source (cr, pattern);
- cairo_paint (cr);
- cairo_pattern_destroy (pattern);
+ cr = cairo_create (surface);
- cairo_destroy (cr);
-}
+ cairo_set_source_rgb (cr, 0.33, 0.33, 0.33);
+ cairo_paint (cr);
+ cairo_set_source_rgb (cr, 0.66, 0.66, 0.66);
-static void
-create_surface (GtkColorScale *scale)
-{
- switch (scale->priv->type)
- {
- case GTK_COLOR_SCALE_HUE:
- create_h_surface (scale);
- break;
- case GTK_COLOR_SCALE_ALPHA:
- create_a_surface (scale);
- break;
+ pattern = _gtk_color_chooser_get_checkered_pattern ();
+ cairo_matrix_init_scale (&matrix, 0.125, 0.125);
+ cairo_pattern_set_matrix (pattern, &matrix);
+ cairo_mask (cr, pattern);
+ cairo_pattern_destroy (pattern);
+
+ color = &scale->priv->color;
+
+ pattern = cairo_pattern_create_linear (0, 0, width, 0);
+ cairo_pattern_add_color_stop_rgba (pattern, 0, color->red, color->green, color->blue, 0);
+ cairo_pattern_add_color_stop_rgba (pattern, width, color->red, color->green, color->blue, 1);
+ cairo_set_source (cr, pattern);
+ cairo_paint (cr);
+ cairo_pattern_destroy (pattern);
+
+ cairo_destroy (cr);
}
}
cairo_t *cr)
{
GtkColorScale *scale = GTK_COLOR_SCALE (widget);
- gint width, height;
-
- width = gtk_widget_get_allocated_width (widget);
- height = gtk_widget_get_allocated_height (widget);
+ gint width, height, x_offset, y_offset;
+ cairo_pattern_t *pattern;
create_surface (scale);
+ gtk_color_scale_get_trough_size (scale,
+ &x_offset, &y_offset,
+ &width, &height);
cairo_save (cr);
+ cairo_translate (cr, x_offset, y_offset);
+ cairo_rectangle (cr, 0, 0, width, height);
- cairo_rectangle (cr, 1, 1, width - 2, height - 2);
- cairo_clip (cr);
- cairo_set_source_surface (cr, scale->priv->surface, 0, 0);
- cairo_paint (cr);
+ pattern = cairo_pattern_create_for_surface (scale->priv->surface);
+ if (gtk_orientable_get_orientation (GTK_ORIENTABLE (widget)) == GTK_ORIENTATION_HORIZONTAL &&
+ gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
+ {
+ cairo_matrix_t matrix;
+
+ cairo_matrix_init_scale (&matrix, -1, 1);
+ cairo_matrix_translate (&matrix, -width, 0);
+ cairo_pattern_set_matrix (pattern, &matrix);
+ }
+ cairo_set_source (cr, pattern);
+ cairo_fill (cr);
+
+ cairo_pattern_destroy (pattern);
cairo_restore (cr);
scale->priv = G_TYPE_INSTANCE_GET_PRIVATE (scale,
GTK_TYPE_COLOR_SCALE,
GtkColorScalePrivate);
-
- scale->priv->type = GTK_COLOR_SCALE_HUE;
+ gtk_widget_add_events (GTK_WIDGET (scale), GDK_TOUCH_MASK);
}
static void
if (scale->priv->surface)
cairo_surface_destroy (scale->priv->surface);
+ g_clear_object (&scale->priv->press_and_hold);
+
G_OBJECT_CLASS (gtk_color_scale_parent_class)->finalize (object);
}
+static void
+scale_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GtkColorScale *scale = GTK_COLOR_SCALE (object);
+
+ switch (prop_id)
+ {
+ case PROP_SCALE_TYPE:
+ g_value_set_int (value, scale->priv->type);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+scale_set_type (GtkColorScale *scale,
+ GtkColorScaleType type)
+{
+ AtkObject *atk_obj;
+
+ scale->priv->type = type;
+
+ atk_obj = gtk_widget_get_accessible (GTK_WIDGET (scale));
+ if (GTK_IS_ACCESSIBLE (atk_obj))
+ {
+ if (type == GTK_COLOR_SCALE_HUE)
+ atk_object_set_name (atk_obj, C_("Color channel", "Hue"));
+ else if (type == GTK_COLOR_SCALE_ALPHA)
+ atk_object_set_name (atk_obj, C_("Color channel", "Alpha"));
+ atk_object_set_role (gtk_widget_get_accessible (GTK_WIDGET (scale)), ATK_ROLE_COLOR_CHOOSER);
+ }
+}
+
+static void
+scale_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GtkColorScale *scale = GTK_COLOR_SCALE (object);
+
+ switch (prop_id)
+ {
+ case PROP_SCALE_TYPE:
+ scale_set_type (scale, (GtkColorScaleType)g_value_get_int (value));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+hold_action (GtkPressAndHold *pah,
+ gint x,
+ gint y,
+ GtkColorScale *scale)
+{
+ gboolean handled;
+
+ g_signal_emit_by_name (scale, "popup-menu", &handled);
+}
+
+static gboolean
+scale_touch (GtkWidget *widget,
+ GdkEventTouch *event)
+{
+ GtkColorScale *scale = GTK_COLOR_SCALE (widget);
+
+ if (!scale->priv->press_and_hold)
+ {
+ gint drag_threshold;
+
+ g_object_get (gtk_widget_get_settings (widget),
+ "gtk-dnd-drag-threshold", &drag_threshold,
+ NULL);
+
+ scale->priv->press_and_hold = gtk_press_and_hold_new ();
+
+ g_object_set (scale->priv->press_and_hold,
+ "drag-threshold", drag_threshold,
+ "hold-time", 1000,
+ NULL);
+
+ g_signal_connect (scale->priv->press_and_hold, "hold",
+ G_CALLBACK (hold_action), scale);
+ }
+
+ gtk_press_and_hold_process_event (scale->priv->press_and_hold, (GdkEvent *)event);
+
+ return GTK_WIDGET_CLASS (gtk_color_scale_parent_class)->touch_event (widget, event);
+}
+
+
static void
gtk_color_scale_class_init (GtkColorScaleClass *class)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
object_class->finalize = scale_finalize;
+ object_class->get_property = scale_get_property;
+ object_class->set_property = scale_set_property;
widget_class->draw = scale_draw;
+ widget_class->touch_event = scale_touch;
- g_type_class_add_private (class, sizeof (GtkColorScalePrivate));
-}
+ g_object_class_install_property (object_class, PROP_SCALE_TYPE,
+ g_param_spec_int ("scale-type", P_("Scale type"), P_("Scale type"),
+ 0, 1, 0,
+ GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
-void
-gtk_color_scale_set_color (GtkColorScale *scale,
- const GdkRGBA *color)
-{
- scale->priv->color.red = color->red;
- scale->priv->color.green = color->green;
- scale->priv->color.blue = color->blue;
- scale->priv->color.alpha = color->alpha;
- if (scale->priv->surface)
- {
- cairo_surface_destroy (scale->priv->surface);
- scale->priv->surface = NULL;
- }
- create_surface (scale);
- gtk_widget_queue_draw (GTK_WIDGET (scale));
+ g_type_class_add_private (class, sizeof (GtkColorScalePrivate));
}
void
-gtk_color_scale_set_type (GtkColorScale *scale,
- GtkColorScaleType type)
+gtk_color_scale_set_rgba (GtkColorScale *scale,
+ const GdkRGBA *color)
{
- scale->priv->type = type;
- cairo_surface_destroy (scale->priv->surface);
- scale->priv->surface = NULL;
+ scale->priv->color = *color;
+ scale->priv->width = -1; /* force surface refresh */
create_surface (scale);
gtk_widget_queue_draw (GTK_WIDGET (scale));
}
GtkWidget *
-gtk_color_scale_new (void)
+gtk_color_scale_new (GtkAdjustment *adjustment,
+ GtkColorScaleType type)
{
return (GtkWidget *) g_object_new (GTK_TYPE_COLOR_SCALE,
- "adjustment", gtk_adjustment_new (0, 0, 1, 0.01, 0.1, 0),
+ "adjustment", adjustment,
"draw-value", FALSE,
+ "scale-type", type,
NULL);
}
projects / ~andy / gtk / blobdiff