app: some cairo tool drawing infrastructure for review, please have a look
This commit is contained in:
Michael Natterer
@ -19,6 +19,10 @@ libappdisplay_a_sources = \
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display-types.h \
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display-types.h \
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gimpcanvas.c \
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gimpcanvas.c \
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gimpcanvas.h \
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gimpcanvas.h \
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gimpcanvasitem.c \
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gimpcanvasitem.h \
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gimpcanvasrectangle.c \
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gimpcanvasrectangle.h \
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gimpcursorview.c \
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gimpcursorview.c \
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gimpcursorview.h \
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gimpcursorview.h \
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gimpdisplay.c \
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gimpdisplay.c \
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120
app/display/gimpcanvasitem.c
Normal file
120
app/display/gimpcanvasitem.c
Normal file
@ -0,0 +1,120 @@
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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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* 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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*
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* This program is distributed in the hope that it will be useful,
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||||||
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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||||||
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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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*
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||||||
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* You should have received a copy of the GNU General Public License
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||||||
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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||||||
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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 "display-types.h"
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#include "gimpcanvasitem.h"
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#include "gimpdisplayshell.h"
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#include "gimpdisplayshell-style.h"
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/* local function prototypes */
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static void gimp_canvas_item_real_draw (GimpCanvasItem *item,
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GimpDisplayShell *shell,
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cairo_t *cr);
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static void gimp_canvas_item_real_invalidate (GimpCanvasItem *item,
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GimpDisplayShell *shell);
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G_DEFINE_TYPE (GimpCanvasItem, gimp_canvas_item,
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GIMP_TYPE_OBJECT)
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#define parent_class gimp_canvas_item_parent_class
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static void
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gimp_canvas_item_class_init (GimpCanvasItemClass *klass)
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{
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klass->draw = gimp_canvas_item_real_draw;
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klass->invalidate = gimp_canvas_item_real_invalidate;
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}
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static void
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gimp_canvas_item_init (GimpCanvasItem *item)
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{
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}
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static void
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gimp_canvas_item_real_draw (GimpCanvasItem *item,
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GimpDisplayShell *shell,
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cairo_t *cr)
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{
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g_warn_if_reached ();
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}
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static void
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gimp_canvas_item_real_invalidate (GimpCanvasItem *item,
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GimpDisplayShell *shell)
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{
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g_warn_if_reached ();
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}
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/* public functions */
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void
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gimp_canvas_item_draw (GimpCanvasItem *item,
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GimpDisplayShell *shell,
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cairo_t *cr)
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{
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g_return_if_fail (GIMP_IS_CANVAS_ITEM (item));
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g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
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g_return_if_fail (cr != NULL);
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cairo_save (cr);
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GIMP_CANVAS_ITEM_GET_CLASS (item)->draw (item, shell, cr);
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cairo_restore (cr);
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}
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void
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gimp_canvas_item_invalidate (GimpCanvasItem *item,
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GimpDisplayShell *shell)
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{
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g_return_if_fail (GIMP_IS_CANVAS_ITEM (item));
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g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
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GIMP_CANVAS_ITEM_GET_CLASS (item)->invalidate (item, shell);
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}
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void
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_gimp_canvas_item_stroke (GimpCanvasItem *item,
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GimpDisplayShell *shell,
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cairo_t *cr)
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{
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gimp_display_shell_set_tool_bg_style (shell, cr);
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cairo_stroke_preserve (cr);
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gimp_display_shell_set_tool_fg_style (shell, cr);
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cairo_stroke (cr);
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}
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void
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_gimp_canvas_item_fill (GimpCanvasItem *item,
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GimpDisplayShell *shell,
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cairo_t *cr)
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{
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gimp_display_shell_set_tool_fg_style (shell, cr);
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cairo_fill (cr);
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}
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75
app/display/gimpcanvasitem.h
Normal file
75
app/display/gimpcanvasitem.h
Normal file
@ -0,0 +1,75 @@
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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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* gimpcanvasitem.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
|
||||||
|
* (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
|
||||||
|
* 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_ITEM_H__
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#define __GIMP_CANVAS_ITEM_H__
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#include "core/gimpobject.h"
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#define GIMP_TYPE_CANVAS_ITEM (gimp_canvas_item_get_type ())
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#define GIMP_CANVAS_ITEM(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_CANVAS_ITEM, GimpCanvasItem))
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#define GIMP_CANVAS_ITEM_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_CANVAS_ITEM, GimpCanvasItemClass))
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#define GIMP_IS_CANVAS_ITEM(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_CANVAS_ITEM))
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#define GIMP_IS_CANVAS_ITEM_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_CANVAS_ITEM))
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#define GIMP_CANVAS_ITEM_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_CANVAS_ITEM, GimpCanvasItemClass))
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typedef struct _GimpCanvasItem GimpCanvasItem;
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typedef struct _GimpCanvasItemClass GimpCanvasItemClass;
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struct _GimpCanvasItem
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{
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GimpObject parent_instance;
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};
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struct _GimpCanvasItemClass
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{
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GimpObjectClass parent_class;
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void (* draw) (GimpCanvasItem *item,
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GimpDisplayShell *shell,
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cairo_t *cr);
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void (* invalidate) (GimpCanvasItem *item,
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GimpDisplayShell *shell);
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};
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GType gimp_canvas_item_get_type (void) G_GNUC_CONST;
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void gimp_canvas_item_draw (GimpCanvasItem *item,
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GimpDisplayShell *shell,
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cairo_t *cr);
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void gimp_canvas_item_invalidate (GimpCanvasItem *item,
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GimpDisplayShell *shell);
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/* protected */
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void _gimp_canvas_item_stroke (GimpCanvasItem *item,
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GimpDisplayShell *shell,
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cairo_t *cr);
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void _gimp_canvas_item_fill (GimpCanvasItem *item,
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GimpDisplayShell *shell,
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cairo_t *cr);
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#endif /* __GIMP_CANVAS_ITEM_H__ */
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289
app/display/gimpcanvasrectangle.c
Normal file
289
app/display/gimpcanvasrectangle.c
Normal file
@ -0,0 +1,289 @@
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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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* 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
|
||||||
|
* the Free Software Foundation; either version 3 of the License, or
|
||||||
|
* (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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||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
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||||||
|
*/
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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 "gimpcanvasrectangle.h"
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#include "gimpdisplayshell.h"
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#include "gimpdisplayshell-expose.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_FILLED
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};
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typedef struct _GimpCanvasRectanglePrivate GimpCanvasRectanglePrivate;
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struct _GimpCanvasRectanglePrivate
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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;
|
||||||
|
gboolean filled;
|
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};
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|
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#define GET_PRIVATE(rectangle) \
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G_TYPE_INSTANCE_GET_PRIVATE (rectangle, \
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|
GIMP_TYPE_CANVAS_RECTANGLE, \
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|
GimpCanvasRectanglePrivate)
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|
|
||||||
|
|
||||||
|
/* local function prototypes */
|
||||||
|
|
||||||
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static void gimp_canvas_rectangle_set_property (GObject *object,
|
||||||
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guint property_id,
|
||||||
|
const GValue *value,
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||||||
|
GParamSpec *pspec);
|
||||||
|
static void gimp_canvas_rectangle_get_property (GObject *object,
|
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|
guint property_id,
|
||||||
|
GValue *value,
|
||||||
|
GParamSpec *pspec);
|
||||||
|
static void gimp_canvas_rectangle_draw (GimpCanvasItem *item,
|
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|
GimpDisplayShell *shell,
|
||||||
|
cairo_t *cr);
|
||||||
|
static void gimp_canvas_rectangle_invalidate (GimpCanvasItem *item,
|
||||||
|
GimpDisplayShell *shell);
|
||||||
|
|
||||||
|
|
||||||
|
G_DEFINE_TYPE (GimpCanvasRectangle, gimp_canvas_rectangle,
|
||||||
|
GIMP_TYPE_CANVAS_ITEM)
|
||||||
|
|
||||||
|
#define parent_class gimp_canvas_rectangle_parent_class
|
||||||
|
|
||||||
|
|
||||||
|
static void
|
||||||
|
gimp_canvas_rectangle_class_init (GimpCanvasRectangleClass *klass)
|
||||||
|
{
|
||||||
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
||||||
|
GimpCanvasItemClass *item_class = GIMP_CANVAS_ITEM_CLASS (klass);
|
||||||
|
|
||||||
|
object_class->set_property = gimp_canvas_rectangle_set_property;
|
||||||
|
object_class->get_property = gimp_canvas_rectangle_get_property;
|
||||||
|
|
||||||
|
item_class->draw = gimp_canvas_rectangle_draw;
|
||||||
|
item_class->invalidate = gimp_canvas_rectangle_invalidate;
|
||||||
|
|
||||||
|
g_object_class_install_property (object_class, PROP_X,
|
||||||
|
g_param_spec_double ("x", NULL, NULL,
|
||||||
|
-GIMP_MAX_IMAGE_SIZE,
|
||||||
|
GIMP_MAX_IMAGE_SIZE, 0,
|
||||||
|
GIMP_PARAM_READWRITE));
|
||||||
|
|
||||||
|
g_object_class_install_property (object_class, PROP_Y,
|
||||||
|
g_param_spec_double ("y", NULL, NULL,
|
||||||
|
-GIMP_MAX_IMAGE_SIZE,
|
||||||
|
GIMP_MAX_IMAGE_SIZE, 0,
|
||||||
|
GIMP_PARAM_READWRITE));
|
||||||
|
|
||||||
|
g_object_class_install_property (object_class, PROP_WIDTH,
|
||||||
|
g_param_spec_double ("width", NULL, NULL,
|
||||||
|
0, GIMP_MAX_IMAGE_SIZE, 0,
|
||||||
|
GIMP_PARAM_READWRITE));
|
||||||
|
|
||||||
|
g_object_class_install_property (object_class, PROP_HEIGHT,
|
||||||
|
g_param_spec_double ("height", NULL, NULL,
|
||||||
|
0, GIMP_MAX_IMAGE_SIZE, 0,
|
||||||
|
GIMP_PARAM_READWRITE));
|
||||||
|
|
||||||
|
g_object_class_install_property (object_class, PROP_FILLED,
|
||||||
|
g_param_spec_boolean ("filled", NULL, NULL,
|
||||||
|
FALSE,
|
||||||
|
GIMP_PARAM_READWRITE));
|
||||||
|
|
||||||
|
g_type_class_add_private (klass, sizeof (GimpCanvasRectanglePrivate));
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
gimp_canvas_rectangle_init (GimpCanvasRectangle *rectangle)
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
gimp_canvas_rectangle_set_property (GObject *object,
|
||||||
|
guint property_id,
|
||||||
|
const GValue *value,
|
||||||
|
GParamSpec *pspec)
|
||||||
|
{
|
||||||
|
GimpCanvasRectanglePrivate *private = GET_PRIVATE (object);
|
||||||
|
|
||||||
|
switch (property_id)
|
||||||
|
{
|
||||||
|
case PROP_X:
|
||||||
|
private->x = g_value_get_double (value);
|
||||||
|
break;
|
||||||
|
case PROP_Y:
|
||||||
|
private->y = g_value_get_double (value);
|
||||||
|
break;
|
||||||
|
case PROP_WIDTH:
|
||||||
|
private->width = g_value_get_double (value);
|
||||||
|
break;
|
||||||
|
case PROP_HEIGHT:
|
||||||
|
private->height = g_value_get_double (value);
|
||||||
|
break;
|
||||||
|
case PROP_FILLED:
|
||||||
|
private->filled = g_value_get_boolean (value);
|
||||||
|
break;
|
||||||
|
|
||||||
|
default:
|
||||||
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
gimp_canvas_rectangle_get_property (GObject *object,
|
||||||
|
guint property_id,
|
||||||
|
GValue *value,
|
||||||
|
GParamSpec *pspec)
|
||||||
|
{
|
||||||
|
GimpCanvasRectanglePrivate *private = GET_PRIVATE (object);
|
||||||
|
|
||||||
|
switch (property_id)
|
||||||
|
{
|
||||||
|
case PROP_X:
|
||||||
|
g_value_set_double (value, private->x);
|
||||||
|
break;
|
||||||
|
case PROP_Y:
|
||||||
|
g_value_set_double (value, private->y);
|
||||||
|
break;
|
||||||
|
case PROP_WIDTH:
|
||||||
|
g_value_set_double (value, private->width);
|
||||||
|
break;
|
||||||
|
case PROP_HEIGHT:
|
||||||
|
g_value_set_double (value, private->height);
|
||||||
|
break;
|
||||||
|
case PROP_FILLED:
|
||||||
|
g_value_set_boolean (value, private->filled);
|
||||||
|
break;
|
||||||
|
|
||||||
|
default:
|
||||||
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
gimp_canvas_rectangle_transform (GimpCanvasItem *item,
|
||||||
|
GimpDisplayShell *shell,
|
||||||
|
gdouble *x,
|
||||||
|
gdouble *y,
|
||||||
|
gdouble *w,
|
||||||
|
gdouble *h)
|
||||||
|
{
|
||||||
|
GimpCanvasRectanglePrivate *private = GET_PRIVATE (item);
|
||||||
|
|
||||||
|
gimp_display_shell_transform_xy_f (shell,
|
||||||
|
MIN (private->x,
|
||||||
|
private->x + private->width),
|
||||||
|
MIN (private->y,
|
||||||
|
private->y + private->height),
|
||||||
|
x, y,
|
||||||
|
FALSE);
|
||||||
|
gimp_display_shell_transform_xy_f (shell,
|
||||||
|
MAX (private->x,
|
||||||
|
private->x + private->width),
|
||||||
|
MAX (private->y,
|
||||||
|
private->y + private->height),
|
||||||
|
w, h,
|
||||||
|
FALSE);
|
||||||
|
|
||||||
|
*w -= *x;
|
||||||
|
*h -= *y;
|
||||||
|
|
||||||
|
if (private->filled)
|
||||||
|
{
|
||||||
|
*x = floor (*x);
|
||||||
|
*y = floor (*y);
|
||||||
|
*w = ceil (*w);
|
||||||
|
*h = ceil (*h);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
*x = PROJ_ROUND (*x) + 0.5;
|
||||||
|
*y = PROJ_ROUND (*x) + 0.5;
|
||||||
|
*w = PROJ_ROUND (*w) - 1.0;
|
||||||
|
*h = PROJ_ROUND (*h) - 1.0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
gimp_canvas_rectangle_draw (GimpCanvasItem *item,
|
||||||
|
GimpDisplayShell *shell,
|
||||||
|
cairo_t *cr)
|
||||||
|
{
|
||||||
|
GimpCanvasRectanglePrivate *private = GET_PRIVATE (item);
|
||||||
|
gdouble x, y;
|
||||||
|
gdouble w, h;
|
||||||
|
|
||||||
|
gimp_canvas_rectangle_transform (item, shell, &x, &y, &w, &h);
|
||||||
|
|
||||||
|
cairo_rectangle (cr, x, y, w, h);
|
||||||
|
|
||||||
|
if (private->filled)
|
||||||
|
_gimp_canvas_item_fill (item, shell, cr);
|
||||||
|
else
|
||||||
|
_gimp_canvas_item_stroke (item, shell, cr);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
gimp_canvas_rectangle_invalidate (GimpCanvasItem *item,
|
||||||
|
GimpDisplayShell *shell)
|
||||||
|
{
|
||||||
|
GimpCanvasRectanglePrivate *private = GET_PRIVATE (item);
|
||||||
|
gdouble x, y;
|
||||||
|
gdouble w, h;
|
||||||
|
|
||||||
|
gimp_canvas_rectangle_transform (item, shell, &x, &y, &w, &h);
|
||||||
|
|
||||||
|
if (private->filled)
|
||||||
|
gimp_display_shell_expose_area (shell, x, y, w, h);
|
||||||
|
else
|
||||||
|
gimp_display_shell_expose_area (shell, x - 1.5, y - 1.5, w + 1.5, h + 1.5);
|
||||||
|
}
|
||||||
|
|
||||||
|
GimpCanvasItem *
|
||||||
|
gimp_canvas_rectangle_new (gdouble x,
|
||||||
|
gdouble y,
|
||||||
|
gdouble width,
|
||||||
|
gdouble height,
|
||||||
|
gboolean filled)
|
||||||
|
{
|
||||||
|
return g_object_new (GIMP_TYPE_CANVAS_RECTANGLE,
|
||||||
|
"x", x,
|
||||||
|
"y", y,
|
||||||
|
"width", width,
|
||||||
|
"height", height,
|
||||||
|
"filled", filled,
|
||||||
|
NULL);
|
||||||
|
}
|
||||||
59
app/display/gimpcanvasrectangle.h
Normal file
59
app/display/gimpcanvasrectangle.h
Normal file
@ -0,0 +1,59 @@
|
|||||||
|
/* GIMP - The GNU Image Manipulation Program
|
||||||
|
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
|
||||||
|
*
|
||||||
|
* gimpcanvasrectangle.h
|
||||||
|
* Copyright (C) 2010 Michael Natterer <mitch@gimp.org>
|
||||||
|
*
|
||||||
|
* This program is free software: you can redistribute it and/or modify
|
||||||
|
* it under the terms of the GNU General Public License as published by
|
||||||
|
* the Free Software Foundation; either version 3 of the License, or
|
||||||
|
* (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef __GIMP_CANVAS_RECTANGLE_H__
|
||||||
|
#define __GIMP_CANVAS_RECTANGLE_H__
|
||||||
|
|
||||||
|
|
||||||
|
#include "gimpcanvasitem.h"
|
||||||
|
|
||||||
|
|
||||||
|
#define GIMP_TYPE_CANVAS_RECTANGLE (gimp_canvas_rectangle_get_type ())
|
||||||
|
#define GIMP_CANVAS_RECTANGLE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_CANVAS_RECTANGLE, GimpCanvasRectangle))
|
||||||
|
#define GIMP_CANVAS_RECTANGLE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_CANVAS_RECTANGLE, GimpCanvasRectangleClass))
|
||||||
|
#define GIMP_IS_CANVAS_RECTANGLE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_CANVAS_RECTANGLE))
|
||||||
|
#define GIMP_IS_CANVAS_RECTANGLE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_CANVAS_RECTANGLE))
|
||||||
|
#define GIMP_CANVAS_RECTANGLE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_CANVAS_RECTANGLE, GimpCanvasRectangleClass))
|
||||||
|
|
||||||
|
|
||||||
|
typedef struct _GimpCanvasRectangle GimpCanvasRectangle;
|
||||||
|
typedef struct _GimpCanvasRectangleClass GimpCanvasRectangleClass;
|
||||||
|
|
||||||
|
struct _GimpCanvasRectangle
|
||||||
|
{
|
||||||
|
GimpCanvasItem parent_instance;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct _GimpCanvasRectangleClass
|
||||||
|
{
|
||||||
|
GimpCanvasItemClass parent_class;
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
GType gimp_canvas_rectangle_get_type (void) G_GNUC_CONST;
|
||||||
|
|
||||||
|
GimpCanvasItem * gimp_canvas_rectangle_new (gdouble x,
|
||||||
|
gdouble y,
|
||||||
|
gdouble width,
|
||||||
|
gdouble height,
|
||||||
|
gboolean filled);
|
||||||
|
|
||||||
|
|
||||||
|
#endif /* __GIMP_CANVAS_RECTANGLE_H__ */
|
||||||
Reference in New Issue
Block a user