mirror of https://github.com/GNOME/gimp.git
app: add a corner canvas item class
This commit is contained in:
parent
41c338ce93
commit
a29a7ec4a2
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@ -21,6 +21,8 @@ libappdisplay_a_sources = \
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gimpcanvas.h \
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gimpcanvasboundary.c \
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gimpcanvasboundary.h \
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gimpcanvascorner.c \
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gimpcanvascorner.h \
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gimpcanvasguide.c \
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gimpcanvasguide.h \
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gimpcanvashandle.c \
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@ -0,0 +1,440 @@
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/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* gimpcanvascorner.c
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* Copyright (C) 2010 Michael Natterer <mitch@gimp.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include "libgimpbase/gimpbase.h"
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#include "libgimpmath/gimpmath.h"
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#include "display-types.h"
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#include "gimpcanvascorner.h"
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#include "gimpdisplayshell.h"
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#include "gimpdisplayshell-transform.h"
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enum
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{
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PROP_0,
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PROP_X,
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PROP_Y,
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PROP_WIDTH,
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PROP_HEIGHT,
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PROP_ANCHOR,
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PROP_CORNER_WIDTH,
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PROP_CORNER_HEIGHT,
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PROP_OUTSIDE
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};
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typedef struct _GimpCanvasCornerPrivate GimpCanvasCornerPrivate;
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struct _GimpCanvasCornerPrivate
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{
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gdouble x;
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gdouble y;
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gdouble width;
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gdouble height;
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GtkAnchorType anchor;
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gint corner_width;
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gint corner_height;
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gboolean outside;
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};
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#define GET_PRIVATE(corner) \
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G_TYPE_INSTANCE_GET_PRIVATE (corner, \
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GIMP_TYPE_CANVAS_CORNER, \
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GimpCanvasCornerPrivate)
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/* local function prototypes */
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static void gimp_canvas_corner_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gimp_canvas_corner_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec);
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static void gimp_canvas_corner_draw (GimpCanvasItem *item,
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GimpDisplayShell *shell,
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cairo_t *cr);
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static GdkRegion * gimp_canvas_corner_get_extents (GimpCanvasItem *item,
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GimpDisplayShell *shell);
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G_DEFINE_TYPE (GimpCanvasCorner, gimp_canvas_corner,
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GIMP_TYPE_CANVAS_ITEM)
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#define parent_class gimp_canvas_corner_parent_class
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static void
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gimp_canvas_corner_class_init (GimpCanvasCornerClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GimpCanvasItemClass *item_class = GIMP_CANVAS_ITEM_CLASS (klass);
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object_class->set_property = gimp_canvas_corner_set_property;
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object_class->get_property = gimp_canvas_corner_get_property;
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item_class->draw = gimp_canvas_corner_draw;
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item_class->get_extents = gimp_canvas_corner_get_extents;
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g_object_class_install_property (object_class, PROP_X,
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g_param_spec_double ("x", NULL, NULL,
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-GIMP_MAX_IMAGE_SIZE,
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GIMP_MAX_IMAGE_SIZE, 0,
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GIMP_PARAM_READWRITE));
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g_object_class_install_property (object_class, PROP_Y,
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g_param_spec_double ("y", NULL, NULL,
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-GIMP_MAX_IMAGE_SIZE,
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GIMP_MAX_IMAGE_SIZE, 0,
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GIMP_PARAM_READWRITE));
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g_object_class_install_property (object_class, PROP_WIDTH,
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g_param_spec_double ("width", NULL, NULL,
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-GIMP_MAX_IMAGE_SIZE,
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GIMP_MAX_IMAGE_SIZE, 0,
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GIMP_PARAM_READWRITE));
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g_object_class_install_property (object_class, PROP_HEIGHT,
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g_param_spec_double ("height", NULL, NULL,
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-GIMP_MAX_IMAGE_SIZE,
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GIMP_MAX_IMAGE_SIZE, 0,
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GIMP_PARAM_READWRITE));
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g_object_class_install_property (object_class, PROP_ANCHOR,
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g_param_spec_enum ("anchor", NULL, NULL,
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GTK_TYPE_ANCHOR_TYPE,
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GTK_ANCHOR_CENTER,
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GIMP_PARAM_READWRITE));
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g_object_class_install_property (object_class, PROP_CORNER_WIDTH,
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g_param_spec_int ("corner-width", NULL, NULL,
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3, 1001, 7,
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GIMP_PARAM_READWRITE));
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g_object_class_install_property (object_class, PROP_CORNER_HEIGHT,
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g_param_spec_int ("corner-height", NULL, NULL,
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3, 1001, 7,
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GIMP_PARAM_READWRITE));
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g_object_class_install_property (object_class, PROP_OUTSIDE,
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g_param_spec_boolean ("outside", NULL, NULL,
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FALSE,
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GIMP_PARAM_READWRITE));
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g_type_class_add_private (klass, sizeof (GimpCanvasCornerPrivate));
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}
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static void
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gimp_canvas_corner_init (GimpCanvasCorner *corner)
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{
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}
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static void
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gimp_canvas_corner_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GimpCanvasCornerPrivate *private = GET_PRIVATE (object);
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switch (property_id)
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{
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case PROP_X:
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private->x = g_value_get_double (value);
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break;
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case PROP_Y:
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private->y = g_value_get_double (value);
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break;
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case PROP_WIDTH:
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private->width = g_value_get_double (value);
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break;
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case PROP_HEIGHT:
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private->height = g_value_get_double (value);
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break;
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case PROP_ANCHOR:
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private->anchor = g_value_get_enum (value);
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break;
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case PROP_CORNER_WIDTH:
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private->corner_width = g_value_get_int (value);
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break;
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case PROP_CORNER_HEIGHT:
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private->corner_height = g_value_get_int (value);
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break;
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case PROP_OUTSIDE:
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private->outside = g_value_get_boolean (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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gimp_canvas_corner_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GimpCanvasCornerPrivate *private = GET_PRIVATE (object);
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switch (property_id)
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{
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case PROP_X:
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g_value_set_double (value, private->x);
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break;
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case PROP_Y:
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g_value_set_double (value, private->y);
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break;
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case PROP_WIDTH:
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g_value_set_double (value, private->width);
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break;
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case PROP_HEIGHT:
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g_value_set_double (value, private->height);
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break;
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case PROP_ANCHOR:
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g_value_set_enum (value, private->anchor);
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break;
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case PROP_CORNER_WIDTH:
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g_value_set_int (value, private->corner_width);
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break;
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case PROP_CORNER_HEIGHT:
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g_value_set_int (value, private->corner_height);
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break;
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case PROP_OUTSIDE:
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g_value_set_boolean (value, private->outside);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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gimp_canvas_corner_transform (GimpCanvasItem *item,
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GimpDisplayShell *shell,
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gdouble *x,
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gdouble *y)
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{
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GimpCanvasCornerPrivate *private = GET_PRIVATE (item);
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gdouble rx, ry;
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gdouble rw, rh;
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gint top_and_bottom_handle_x_offset;
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gint left_and_right_handle_y_offset;
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gimp_display_shell_transform_xy_f (shell,
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MIN (private->x,
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private->x + private->width),
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MIN (private->y,
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private->y + private->height),
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&rx, &ry);
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gimp_display_shell_transform_xy_f (shell,
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MAX (private->x,
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private->x + private->width),
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MAX (private->y,
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private->y + private->height),
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&rw, &rh);
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rw -= rx;
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rh -= ry;
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rx = PROJ_ROUND (rx) + 0.5;
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ry = PROJ_ROUND (ry) + 0.5;
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rw = PROJ_ROUND (rw) - 1.0;
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rh = PROJ_ROUND (rh) - 1.0;
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top_and_bottom_handle_x_offset = (rw - private->corner_width) / 2;
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left_and_right_handle_y_offset = (rh - private->corner_height) / 2;
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switch (private->anchor)
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{
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case GTK_ANCHOR_CENTER:
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break;
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case GTK_ANCHOR_NORTH_WEST:
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if (private->outside)
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{
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*x = rx - private->corner_width;
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*y = ry - private->corner_height;
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}
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else
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{
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*x = rx;
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*y = ry;
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}
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break;
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case GTK_ANCHOR_NORTH_EAST:
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if (private->outside)
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{
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*x = rx + rw;
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*y = ry - private->corner_height;
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}
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else
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{
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*x = rx + rw - private->corner_width;
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*y = ry;
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}
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break;
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case GTK_ANCHOR_SOUTH_WEST:
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if (private->outside)
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{
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*x = rx - private->corner_width;
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*y = ry + rh;
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}
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else
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{
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*x = rx;
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*y = ry + rh - private->corner_height;
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}
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break;
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case GTK_ANCHOR_SOUTH_EAST:
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if (private->outside)
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{
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*x = rx + rw;
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*y = ry + rh;
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}
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else
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{
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*x = rx + rw - private->corner_width;
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*y = ry + rh - private->corner_height;
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}
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break;
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case GTK_ANCHOR_NORTH:
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if (private->outside)
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{
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*x = rx;
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*y = ry - private->corner_height;
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}
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else
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{
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*x = rx + top_and_bottom_handle_x_offset;
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*y = ry;
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}
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break;
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case GTK_ANCHOR_SOUTH:
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if (private->outside)
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{
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*x = rx;
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*y = ry + rh;
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}
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else
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{
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*x = rx + top_and_bottom_handle_x_offset;
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*y = ry + rh - private->corner_height;
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}
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break;
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case GTK_ANCHOR_WEST:
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if (private->outside)
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{
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*x = rx - private->corner_width;
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*y = ry;
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}
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else
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{
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*x = rx;
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*y = ry + left_and_right_handle_y_offset;
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}
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break;
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case GTK_ANCHOR_EAST:
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if (private->outside)
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{
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*x = rx + rw;
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*y = ry;
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}
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else
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{
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*x = rx + rw - private->corner_width;
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*y = ry + left_and_right_handle_y_offset;
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}
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break;
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}
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}
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static void
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gimp_canvas_corner_draw (GimpCanvasItem *item,
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GimpDisplayShell *shell,
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cairo_t *cr)
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{
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GimpCanvasCornerPrivate *private = GET_PRIVATE (item);
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gdouble x, y;
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gimp_canvas_corner_transform (item, shell, &x, &y);
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cairo_rectangle (cr, x, y, private->corner_width, private->corner_height);
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_gimp_canvas_item_stroke (item, shell, cr);
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}
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static GdkRegion *
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gimp_canvas_corner_get_extents (GimpCanvasItem *item,
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GimpDisplayShell *shell)
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{
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GimpCanvasCornerPrivate *private = GET_PRIVATE (item);
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GdkRectangle rectangle;
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gdouble x, y;
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gimp_canvas_corner_transform (item, shell, &x, &y);
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rectangle.x = floor (x - 1.5);
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rectangle.y = floor (y - 1.5);
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rectangle.width = ceil (private->corner_width + 3.0);
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rectangle.height = ceil (private->corner_height + 3.0);
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return gdk_region_rectangle (&rectangle);
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}
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GimpCanvasItem *
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gimp_canvas_corner_new (gdouble x,
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gdouble y,
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gdouble width,
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gdouble height,
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GtkAnchorType anchor,
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gint corner_width,
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gint corner_height,
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gboolean outside)
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{
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return g_object_new (GIMP_TYPE_CANVAS_CORNER,
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"x", x,
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"y", y,
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"width", width,
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"height", height,
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"anchor", anchor,
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"corner-width", corner_width,
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"corner-height", corner_height,
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"outside", outside,
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NULL);
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}
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@ -0,0 +1,62 @@
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/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* gimpcanvascorner.h
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* Copyright (C) 2010 Michael Natterer <mitch@gimp.org>
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*
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* This program is free software: you can redistribute it and/or modify
|
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* it under the terms of the GNU General Public License as published by
|
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* the Free Software Foundation; either version 3 of the License, or
|
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GIMP_CANVAS_CORNER_H__
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#define __GIMP_CANVAS_CORNER_H__
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#include "gimpcanvasitem.h"
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#define GIMP_TYPE_CANVAS_CORNER (gimp_canvas_corner_get_type ())
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#define GIMP_CANVAS_CORNER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_CANVAS_CORNER, GimpCanvasCorner))
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#define GIMP_CANVAS_CORNER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_CANVAS_CORNER, GimpCanvasCornerClass))
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#define GIMP_IS_CANVAS_CORNER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_CANVAS_CORNER))
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#define GIMP_IS_CANVAS_CORNER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_CANVAS_CORNER))
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#define GIMP_CANVAS_CORNER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_CANVAS_CORNER, GimpCanvasCornerClass))
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typedef struct _GimpCanvasCorner GimpCanvasCorner;
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typedef struct _GimpCanvasCornerClass GimpCanvasCornerClass;
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struct _GimpCanvasCorner
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{
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GimpCanvasItem parent_instance;
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};
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struct _GimpCanvasCornerClass
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{
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GimpCanvasItemClass parent_class;
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};
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GType gimp_canvas_corner_get_type (void) G_GNUC_CONST;
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|
||||
GimpCanvasItem * gimp_canvas_corner_new (gdouble x,
|
||||
gdouble y,
|
||||
gdouble width,
|
||||
gdouble height,
|
||||
GtkAnchorType anchor,
|
||||
gint corner_width,
|
||||
gint corner_height,
|
||||
gboolean outside);
|
||||
|
||||
|
||||
#endif /* __GIMP_CANVAS_CORNER_H__ */
|
Loading…
Reference in New Issue