Commit 225d2247 authored by Michael Natterer's avatar Michael Natterer 😴
Browse files

app: add a text cursor canvas item class

parent e7f1d444
......@@ -37,6 +37,8 @@ libappdisplay_a_sources = \
gimpcanvaspolygon.h \
gimpcanvasrectangle.c \
gimpcanvasrectangle.h \
gimpcanvastextcursor.c \
gimpcanvastextcursor.h \
gimpcursorview.c \
gimpcursorview.h \
gimpdisplay.c \
......
/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpcanvastextcursor.c
* 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/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpmath/gimpmath.h"
#include "display-types.h"
#include "gimpcanvastextcursor.h"
#include "gimpdisplayshell.h"
#include "gimpdisplayshell-transform.h"
enum
{
PROP_0,
PROP_X,
PROP_Y,
PROP_WIDTH,
PROP_HEIGHT,
PROP_OVERWRITE
};
typedef struct _GimpCanvasTextCursorPrivate GimpCanvasTextCursorPrivate;
struct _GimpCanvasTextCursorPrivate
{
gint x;
gint y;
gint width;
gint height;
gboolean overwrite;
};
#define GET_PRIVATE(text_cursor) \
G_TYPE_INSTANCE_GET_PRIVATE (text_cursor, \
GIMP_TYPE_CANVAS_TEXT_CURSOR, \
GimpCanvasTextCursorPrivate)
/* local function prototypes */
static void gimp_canvas_text_cursor_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_canvas_text_cursor_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_canvas_text_cursor_draw (GimpCanvasItem *item,
GimpDisplayShell *shell,
cairo_t *cr);
static GdkRegion * gimp_canvas_text_cursor_get_extents (GimpCanvasItem *item,
GimpDisplayShell *shell);
G_DEFINE_TYPE (GimpCanvasTextCursor, gimp_canvas_text_cursor,
GIMP_TYPE_CANVAS_ITEM)
#define parent_class gimp_canvas_text_cursor_parent_class
static void
gimp_canvas_text_cursor_class_init (GimpCanvasTextCursorClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpCanvasItemClass *item_class = GIMP_CANVAS_ITEM_CLASS (klass);
object_class->set_property = gimp_canvas_text_cursor_set_property;
object_class->get_property = gimp_canvas_text_cursor_get_property;
item_class->draw = gimp_canvas_text_cursor_draw;
item_class->get_extents = gimp_canvas_text_cursor_get_extents;
g_object_class_install_property (object_class, PROP_X,
g_param_spec_int ("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_int ("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_int ("width", NULL, NULL,
-GIMP_MAX_IMAGE_SIZE,
GIMP_MAX_IMAGE_SIZE, 0,
GIMP_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_HEIGHT,
g_param_spec_int ("height", NULL, NULL,
-GIMP_MAX_IMAGE_SIZE,
GIMP_MAX_IMAGE_SIZE, 0,
GIMP_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_OVERWRITE,
g_param_spec_boolean ("overwrite", NULL, NULL,
FALSE,
GIMP_PARAM_READWRITE));
g_type_class_add_private (klass, sizeof (GimpCanvasTextCursorPrivate));
}
static void
gimp_canvas_text_cursor_init (GimpCanvasTextCursor *text_cursor)
{
}
static void
gimp_canvas_text_cursor_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpCanvasTextCursorPrivate *private = GET_PRIVATE (object);
switch (property_id)
{
case PROP_X:
private->x = g_value_get_int (value);
break;
case PROP_Y:
private->y = g_value_get_int (value);
break;
case PROP_WIDTH:
private->width = g_value_get_int (value);
break;
case PROP_HEIGHT:
private->height = g_value_get_int (value);
break;
case PROP_OVERWRITE:
private->overwrite = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_canvas_text_cursor_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpCanvasTextCursorPrivate *private = GET_PRIVATE (object);
switch (property_id)
{
case PROP_X:
g_value_set_int (value, private->x);
break;
case PROP_Y:
g_value_set_int (value, private->y);
break;
case PROP_WIDTH:
g_value_set_int (value, private->width);
break;
case PROP_HEIGHT:
g_value_set_int (value, private->height);
break;
case PROP_OVERWRITE:
g_value_set_boolean (value, private->overwrite);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_canvas_text_cursor_transform (GimpCanvasItem *item,
GimpDisplayShell *shell,
gdouble *x,
gdouble *y,
gdouble *w,
gdouble *h)
{
GimpCanvasTextCursorPrivate *private = GET_PRIVATE (item);
gimp_display_shell_transform_xy_f (shell,
private->x,
private->y,
x, y);
gimp_display_shell_transform_xy_f (shell,
private->x + private->width,
private->y + private->height,
w, h);
*w -= *x;
*h -= *y;
*x = PROJ_ROUND (*x) + 0.5;
*y = PROJ_ROUND (*y) + 0.5;
if (private->overwrite)
{
*w = PROJ_ROUND (*w) - 1.0;
*h = PROJ_ROUND (*h) - 1.0;
}
else
{
*w = 0;
*h = PROJ_ROUND (*h) - 1.0;
}
}
static void
gimp_canvas_text_cursor_draw (GimpCanvasItem *item,
GimpDisplayShell *shell,
cairo_t *cr)
{
GimpCanvasTextCursorPrivate *private = GET_PRIVATE (item);
gdouble x, y;
gdouble w, h;
gimp_canvas_text_cursor_transform (item, shell, &x, &y, &w, &h);
if (private->overwrite)
{
cairo_rectangle (cr, x, y, w, h);
}
else
{
cairo_move_to (cr, x, y);
cairo_line_to (cr, x, y + h);
cairo_move_to (cr, x - 3.0, y);
cairo_line_to (cr, x + 3.0, y);
cairo_move_to (cr, x - 3.0, y + h);
cairo_line_to (cr, x + 3.0, y + h);
}
_gimp_canvas_item_stroke (item, shell, cr);
}
static GdkRegion *
gimp_canvas_text_cursor_get_extents (GimpCanvasItem *item,
GimpDisplayShell *shell)
{
GimpCanvasTextCursorPrivate *private = GET_PRIVATE (item);
GdkRectangle rectangle;
gdouble x, y;
gdouble w, h;
gimp_canvas_text_cursor_transform (item, shell, &x, &y, &w, &h);
if (private->overwrite)
{
rectangle.x = floor (x - 1.5);
rectangle.y = floor (y - 1.5);
rectangle.width = ceil (w + 3.0);
rectangle.height = ceil (h + 3.0);
}
else
{
rectangle.x = floor (x - 3.5);
rectangle.y = floor (y - 1.5);
rectangle.width = ceil (8.0);
rectangle.height = ceil (h + 1.5);
}
return gdk_region_rectangle (&rectangle);
}
GimpCanvasItem *
gimp_canvas_text_cursor_new (PangoRectangle *cursor,
gboolean overwrite)
{
return g_object_new (GIMP_TYPE_CANVAS_TEXT_CURSOR,
"x", cursor->x,
"y", cursor->y,
"width", cursor->width,
"height", cursor->height,
"overwrite", overwrite,
NULL);
}
/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpcanvastextcursor.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_TEXT_CURSOR_H__
#define __GIMP_CANVAS_TEXT_CURSOR_H__
#include "gimpcanvasitem.h"
#define GIMP_TYPE_CANVAS_TEXT_CURSOR (gimp_canvas_text_cursor_get_type ())
#define GIMP_CANVAS_TEXT_CURSOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_CANVAS_TEXT_CURSOR, GimpCanvasTextCursor))
#define GIMP_CANVAS_TEXT_CURSOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_CANVAS_TEXT_CURSOR, GimpCanvasTextCursorClass))
#define GIMP_IS_CANVAS_TEXT_CURSOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_CANVAS_TEXT_CURSOR))
#define GIMP_IS_CANVAS_TEXT_CURSOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_CANVAS_TEXT_CURSOR))
#define GIMP_CANVAS_TEXT_CURSOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_CANVAS_TEXT_CURSOR, GimpCanvasTextCursorClass))
typedef struct _GimpCanvasTextCursor GimpCanvasTextCursor;
typedef struct _GimpCanvasTextCursorClass GimpCanvasTextCursorClass;
struct _GimpCanvasTextCursor
{
GimpCanvasItem parent_instance;
};
struct _GimpCanvasTextCursorClass
{
GimpCanvasItemClass parent_class;
};
GType gimp_canvas_text_cursor_get_type (void) G_GNUC_CONST;
GimpCanvasItem * gimp_canvas_text_cursor_new (PangoRectangle *cursor,
gboolean overwrite);
#endif /* __GIMP_CANVAS_RECTANGLE_H__ */
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