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647f0ada2af7b91c7b5110b46a0230cd3f79f112
gimp/app/tools/gimpblendtool.c
Michael Natterer 41b905baa8 app: make GimpTool implement the GimpProgress interface properly 
and remove the previously added quick hack. Change the cage progress
code to standard progress code, and use the tool progress also in
blend.
2011-03-25 10:55:07 +01:00

430 lines
16 KiB
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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 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 <stdlib.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimp-utils.h"
#include "core/gimpdrawable.h"
#include "core/gimpdrawable-blend.h"
#include "core/gimperror.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 "gimp-intl.h"
/* local function prototypes */
static gboolean gimp_blend_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error);
static void gimp_blend_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display);
static void gimp_blend_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display);
static void gimp_blend_tool_motion (GimpTool *tool,
const 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,
const 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->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_precision (tool->control,
GIMP_CURSOR_PRECISION_SUBPIXEL);
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)
{
GimpImage *image = gimp_display_get_image (display);
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
if (! GIMP_TOOL_CLASS (parent_class)->initialize (tool, display, error))
{
return FALSE;
}
if (gimp_drawable_is_indexed (drawable))
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("Blend does not operate on indexed layers."));
return FALSE;
}
if (gimp_viewable_get_children (GIMP_VIEWABLE (drawable)))
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("Cannot modify the pixels of layer groups."));
return FALSE;
}
if (gimp_item_is_content_locked (GIMP_ITEM (drawable)))
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("The active layer's pixels are locked."));
return FALSE;
}
return TRUE;
}
static void
gimp_blend_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display)
{
GimpBlendTool *blend_tool = GIMP_BLEND_TOOL (tool);
blend_tool->start_x = blend_tool->end_x = coords->x;
blend_tool->start_y = blend_tool->end_y = coords->y;
blend_tool->last_x = blend_tool->mouse_x = coords->x;
blend_tool->last_y = blend_tool->mouse_y = coords->y;
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,
const 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 = gimp_display_get_image (display);
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->start_x != blend_tool->end_x) ||
(blend_tool->start_y != blend_tool->end_y)))
{
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
GimpProgress *progress;
gint off_x;
gint off_y;
progress = gimp_progress_start (GIMP_PROGRESS (tool),
_("Blending"), FALSE);
gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
gimp_drawable_blend (drawable,
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->start_x - off_x,
blend_tool->start_y - off_y,
blend_tool->end_x - off_x,
blend_tool->end_y - off_y,
progress);
if (progress)
gimp_progress_end (progress);
gimp_image_flush (image);
}
tool->display = NULL;
tool->drawable = NULL;
}
static void
gimp_blend_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpBlendTool *blend_tool = GIMP_BLEND_TOOL (tool);
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
blend_tool->mouse_x = coords->x;
blend_tool->mouse_y = coords->y;
/* Move the whole line if alt is pressed */
if (state & GDK_MOD1_MASK)
{
gdouble dx = blend_tool->last_x - coords->x;
gdouble dy = blend_tool->last_y - coords->y;
blend_tool->start_x -= dx;
blend_tool->start_y -= dy;
blend_tool->end_x -= dx;
blend_tool->end_y -= dy;
}
else
{
blend_tool->end_x = coords->x;
blend_tool->end_y = coords->y;
}
if (state & GDK_CONTROL_MASK)
{
gimp_constrain_line (blend_tool->start_x, blend_tool->start_y,
&blend_tool->end_x, &blend_tool->end_y,
GIMP_CONSTRAIN_LINE_15_DEGREES);
}
gimp_tool_pop_status (tool, display);
gimp_blend_tool_push_status (blend_tool, state, display);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
blend_tool->last_x = coords->x;
blend_tool->last_y = coords->y;
}
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->end_x = blend_tool->mouse_x;
blend_tool->end_y = blend_tool->mouse_y;
/* Restrict to multiples of 15 degrees if ctrl is pressed */
if (press)
{
gimp_constrain_line (blend_tool->start_x, blend_tool->start_y,
&blend_tool->end_x, &blend_tool->end_y,
GIMP_CONSTRAIN_LINE_15_DEGREES);
}
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,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
GimpImage *image = gimp_display_get_image (display);
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_NONE;
if (gimp_drawable_is_indexed (drawable) ||
gimp_viewable_get_children (GIMP_VIEWABLE (drawable)) ||
gimp_item_is_content_locked (GIMP_ITEM (drawable)))
{
modifier = GIMP_CURSOR_MODIFIER_BAD;
}
gimp_tool_control_set_cursor_modifier (tool->control, modifier);
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 the line between the start and end coords */
gimp_draw_tool_add_line (draw_tool,
blend_tool->start_x,
blend_tool->start_y,
blend_tool->end_x,
blend_tool->end_y);
/* Draw start target */
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_CROSS,
blend_tool->start_x,
blend_tool->start_y,
GIMP_TOOL_HANDLE_SIZE_CROSS,
GIMP_TOOL_HANDLE_SIZE_CROSS,
GIMP_HANDLE_ANCHOR_CENTER);
/* Draw end target */
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_CROSS,
blend_tool->end_x,
blend_tool->end_y,
GIMP_TOOL_HANDLE_SIZE_CROSS,
GIMP_TOOL_HANDLE_SIZE_CROSS,
GIMP_HANDLE_ANCHOR_CENTER);
}
static void
gimp_blend_tool_push_status (GimpBlendTool *blend_tool,
GdkModifierType state,
GimpDisplay *display)
{
GimpTool *tool = GIMP_TOOL (blend_tool);
gchar *status_help;
status_help = gimp_suggest_modifiers ("",
((GDK_CONTROL_MASK | GDK_MOD1_MASK)
& ~state),
NULL,
_("%s for constrained angles"),
_("%s to move the whole line"));
gimp_tool_push_status_coords (tool, display,
gimp_tool_control_get_precision (tool->control),
_("Blend: "),
blend_tool->end_x - blend_tool->start_x,
", ",
blend_tool->end_y - blend_tool->start_y,
status_help);
g_free (status_help);
}
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