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gimp/app/tools/gimpblendtool.c
Michael Natterer d7ed63948c Step one towards enabling tool cancellation by other means than mouse 
2007-02-27  Michael Natterer  <mitch@gimp.org>

	Step one towards enabling tool cancellation by other means than
	mouse button 3 and towards proper "clicked" semantics.

	* app/tools/tools-enums.[ch]: added enum GimpButtonReleaseType
	which can be one of { NORMAL, CANCEL, CLICK } (click is curently
	unused).

	* app/tools/gimptool.[ch] (GimpTool::button_release): added
	"release_type" parameter.

	(gimp_tool_button_release): if the state contains
	GDK_BUTTON3_MASK, call the tool's button_release() with CANCEL,
	use NORMAL otherwise.

	* app/tools/gimpaligntool.c
	* app/tools/gimpblendtool.c
	* app/tools/gimpbrightnesscontrasttool.c
	* app/tools/gimpbucketfilltool.c
	* app/tools/gimpcolortool.c
	* app/tools/gimpcroptool.c
	* app/tools/gimpcurvestool.c
	* app/tools/gimpeditselectiontool.c
	* app/tools/gimpforegroundselecttool.c
	* app/tools/gimpfreeselecttool.c
	* app/tools/gimpiscissorstool.c
	* app/tools/gimpmagnifytool.c
	* app/tools/gimpmeasuretool.c
	* app/tools/gimpmovetool.c
	* app/tools/gimppainttool.c
	* app/tools/gimprectangleselecttool.c
	* app/tools/gimprectangletool.[ch]
	* app/tools/gimpregionselecttool.c
	* app/tools/gimptransformtool.c
	* app/tools/gimpvectortool.c (button_release): added
	"release_type" parameters and get rid of own checks for
	GDK_BUTTON3_MASK.


svn path=/trunk/; revision=22015
2007-02-27 18:55:12 +00:00

419 lines
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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <stdlib.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimp.h"
#include "core/gimpdrawable.h"
#include "core/gimpdrawable-blend.h"
#include "core/gimpgradient.h"
#include "core/gimpimage.h"
#include "core/gimpprogress.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimpwidgets-utils.h"
#include "display/gimpdisplay.h"
#include "gimpblendoptions.h"
#include "gimpblendtool.h"
#include "gimptoolcontrol.h"
#include "tools-utils.h"
#include "gimp-intl.h"
#define TARGET_SIZE 15
/* local function prototypes */
static gboolean gimp_blend_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error);
static void gimp_blend_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display);
static void gimp_blend_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display);
static void gimp_blend_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display);
static void gimp_blend_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display);
static void gimp_blend_tool_active_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *display);
static void gimp_blend_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display);
static void gimp_blend_tool_draw (GimpDrawTool *draw_tool);
static void gimp_blend_tool_push_status (GimpBlendTool *blend_tool,
GdkModifierType state,
GimpDisplay *display);
G_DEFINE_TYPE (GimpBlendTool, gimp_blend_tool, GIMP_TYPE_DRAW_TOOL)
#define parent_class gimp_blend_tool_parent_class
void
gimp_blend_tool_register (GimpToolRegisterCallback callback,
gpointer data)
{
(* callback) (GIMP_TYPE_BLEND_TOOL,
GIMP_TYPE_BLEND_OPTIONS,
gimp_blend_options_gui,
GIMP_CONTEXT_FOREGROUND_MASK |
GIMP_CONTEXT_BACKGROUND_MASK |
GIMP_CONTEXT_OPACITY_MASK |
GIMP_CONTEXT_PAINT_MODE_MASK |
GIMP_CONTEXT_GRADIENT_MASK,
"gimp-blend-tool",
_("Blend"),
_("Blend Tool: Fill selected area with a color gradient"),
N_("Blen_d"), "L",
NULL, GIMP_HELP_TOOL_BLEND,
GIMP_STOCK_TOOL_BLEND,
data);
}
static void
gimp_blend_tool_class_init (GimpBlendToolClass *klass)
{
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
GimpDrawToolClass *draw_tool_class = GIMP_DRAW_TOOL_CLASS (klass);
tool_class->control = gimp_blend_tool_control;
tool_class->initialize = gimp_blend_tool_initialize;
tool_class->button_press = gimp_blend_tool_button_press;
tool_class->button_release = gimp_blend_tool_button_release;
tool_class->motion = gimp_blend_tool_motion;
tool_class->active_modifier_key = gimp_blend_tool_active_modifier_key;
tool_class->cursor_update = gimp_blend_tool_cursor_update;
draw_tool_class->draw = gimp_blend_tool_draw;
}
static void
gimp_blend_tool_init (GimpBlendTool *blend_tool)
{
GimpTool *tool = GIMP_TOOL (blend_tool);
gimp_tool_control_set_scroll_lock (tool->control, TRUE);
gimp_tool_control_set_cursor (tool->control,
GIMP_CURSOR_MOUSE);
gimp_tool_control_set_tool_cursor (tool->control,
GIMP_TOOL_CURSOR_BLEND);
gimp_tool_control_set_action_value_1 (tool->control,
"context/context-opacity-set");
gimp_tool_control_set_action_object_1 (tool->control,
"context/context-gradient-select-set");
}
static gboolean
gimp_blend_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error)
{
GimpDrawable *drawable = gimp_image_active_drawable (display->image);
if (! GIMP_TOOL_CLASS (parent_class)->initialize (tool, display, error))
{
return FALSE;
}
if (gimp_drawable_is_indexed (drawable))
{
g_set_error (error, 0, 0,
_("Blend does not operate on indexed layers."));
return FALSE;
}
return TRUE;
}
static void
gimp_blend_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display)
{
switch (action)
{
case GIMP_TOOL_ACTION_PAUSE:
case GIMP_TOOL_ACTION_RESUME:
break;
case GIMP_TOOL_ACTION_HALT:
gimp_tool_pop_status (tool, display);
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, display);
}
static void
gimp_blend_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpBlendTool *blend_tool = GIMP_BLEND_TOOL (tool);
GimpDrawable *drawable;
gint off_x, off_y;
drawable = gimp_image_active_drawable (display->image);
gimp_item_offsets (GIMP_ITEM (drawable), &off_x, &off_y);
blend_tool->mousex = coords->x - off_x;
blend_tool->mousey = coords->y - off_y;
blend_tool->endx = blend_tool->startx = blend_tool->mousex;
blend_tool->endy = blend_tool->starty = blend_tool->mousey;
tool->display = display;
gimp_tool_control_activate (tool->control);
gimp_blend_tool_push_status (blend_tool, state, display);
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), display);
}
static void
gimp_blend_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display)
{
GimpBlendTool *blend_tool = GIMP_BLEND_TOOL (tool);
GimpBlendOptions *options = GIMP_BLEND_TOOL_GET_OPTIONS (tool);
GimpPaintOptions *paint_options = GIMP_PAINT_OPTIONS (options);
GimpContext *context = GIMP_CONTEXT (options);
GimpImage *image = display->image;
gimp_tool_pop_status (tool, display);
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool));
gimp_tool_control_halt (tool->control);
if ((release_type != GIMP_BUTTON_RELEASE_CANCEL) &&
((blend_tool->startx != blend_tool->endx) ||
(blend_tool->starty != blend_tool->endy)))
{
GimpProgress *progress;
progress = gimp_progress_start (GIMP_PROGRESS (display),
_("Blending"), FALSE);
gimp_drawable_blend (gimp_image_active_drawable (image),
context,
GIMP_CUSTOM_MODE,
gimp_context_get_paint_mode (context),
options->gradient_type,
gimp_context_get_opacity (context),
options->offset,
paint_options->gradient_options->gradient_repeat,
paint_options->gradient_options->gradient_reverse,
options->supersample,
options->supersample_depth,
options->supersample_threshold,
options->dither,
blend_tool->startx,
blend_tool->starty,
blend_tool->endx,
blend_tool->endy,
progress);
if (progress)
gimp_progress_end (progress);
gimp_image_flush (image);
}
}
static void
gimp_blend_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpBlendTool *blend_tool = GIMP_BLEND_TOOL (tool);
gint off_x, off_y;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
gimp_item_offsets (GIMP_ITEM (gimp_image_active_drawable (display->image)),
&off_x, &off_y);
/* Get the current coordinates */
blend_tool->mousex = coords->x - off_x;
blend_tool->mousey = coords->y - off_y;
blend_tool->endx = blend_tool->mousex;
blend_tool->endy = blend_tool->mousey;
/* Restrict to multiples of 15 degrees if ctrl is pressed */
if (state & GDK_CONTROL_MASK)
{
gimp_tool_motion_constrain (blend_tool->startx, blend_tool->starty,
&blend_tool->endx, &blend_tool->endy);
}
gimp_tool_pop_status (tool, display);
gimp_blend_tool_push_status (blend_tool, state, display);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_blend_tool_active_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *display)
{
GimpBlendTool *blend_tool = GIMP_BLEND_TOOL (tool);
if (key == GDK_CONTROL_MASK)
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
blend_tool->endx = blend_tool->mousex;
blend_tool->endy = blend_tool->mousey;
if (press)
{
gimp_tool_motion_constrain (blend_tool->startx, blend_tool->starty,
&blend_tool->endx, &blend_tool->endy);
}
gimp_tool_pop_status (tool, display);
gimp_blend_tool_push_status (blend_tool, state, display);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
}
static void
gimp_blend_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
switch (gimp_drawable_type (gimp_image_active_drawable (display->image)))
{
case GIMP_INDEXED_IMAGE:
case GIMP_INDEXEDA_IMAGE:
gimp_tool_control_set_cursor_modifier (tool->control,
GIMP_CURSOR_MODIFIER_BAD);
break;
default:
gimp_tool_control_set_cursor_modifier (tool->control,
GIMP_CURSOR_MODIFIER_NONE);
break;
}
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
}
static void
gimp_blend_tool_draw (GimpDrawTool *draw_tool)
{
GimpBlendTool *blend_tool = GIMP_BLEND_TOOL (draw_tool);
/* Draw start target */
gimp_draw_tool_draw_handle (draw_tool,
GIMP_HANDLE_CROSS,
floor (blend_tool->startx) + 0.5,
floor (blend_tool->starty) + 0.5,
TARGET_SIZE,
TARGET_SIZE,
GTK_ANCHOR_CENTER,
TRUE);
/* Draw end target */
gimp_draw_tool_draw_handle (draw_tool,
GIMP_HANDLE_CROSS,
floor (blend_tool->endx) + 0.5,
floor (blend_tool->endy) + 0.5,
TARGET_SIZE,
TARGET_SIZE,
GTK_ANCHOR_CENTER,
TRUE);
/* Draw the line between the start and end coords */
gimp_draw_tool_draw_line (draw_tool,
floor (blend_tool->startx) + 0.5,
floor (blend_tool->starty) + 0.5,
floor (blend_tool->endx) + 0.5,
floor (blend_tool->endy) + 0.5,
TRUE);
}
static void
gimp_blend_tool_push_status (GimpBlendTool *blend_tool,
GdkModifierType state,
GimpDisplay *display)
{
gchar *status_help;
status_help = gimp_suggest_modifiers ("",
GDK_CONTROL_MASK & ~state,
NULL,
_("%s for constrained angles"),
NULL);
gimp_tool_push_status_coords (GIMP_TOOL (blend_tool), display,
_("Blend: "),
blend_tool->endx - blend_tool->startx,
", ",
blend_tool->endy - blend_tool->starty,
status_help);
g_free (status_help);
}
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