dnrops
/
gimp
mirror of https://github.com/GNOME/gimp.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
gimp/app/tools/gimpmagnifytool.c

510 lines
15 KiB
C
Raw Blame History

/* The GIMP -- an 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 <gdk/gdkkeysyms.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimpimage.h"
#include "core/gimptoolinfo.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplayshell.h"
#include "display/gimpdisplayshell-scale.h"
#include "widgets/gimpenummenu.h"
#include "gimpmagnifytool.h"
#include "tool_options.h"
#include "gimprc.h"
#include "libgimp/gimpintl.h"
typedef struct _MagnifyOptions MagnifyOptions;
struct _MagnifyOptions
{
GimpToolOptions tool_options;
gint allow_resize; /* default from gimprc.resize_windows_on_zoom */
GtkWidget *allow_resize_w;
GimpZoomType type;
GimpZoomType type_d;
GtkWidget *type_w;
gdouble threshold;
gdouble threshold_d;
GtkObject *threshold_w;
};
/* magnify action functions */
static void gimp_magnify_tool_class_init (GimpMagnifyToolClass *klass);
static void gimp_magnify_tool_init (GimpMagnifyTool *tool);
static void gimp_magnify_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_magnify_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_magnify_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_magnify_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_magnify_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_magnify_tool_draw (GimpDrawTool *draw_tool);
static void zoom_in (gint *src,
gint *dest,
gint scale);
static void zoom_out (gint *src,
gint *dest,
gint scale);
static GimpToolOptions * magnify_options_new (GimpToolInfo *tool_info);
static void magnify_options_reset (GimpToolOptions *tool_options);
static GimpDrawToolClass *parent_class = NULL;
/* public functions */
void
gimp_magnify_tool_register (GimpToolRegisterCallback callback,
gpointer data)
{
(* callback) (GIMP_TYPE_MAGNIFY_TOOL,
magnify_options_new,
FALSE,
"gimp-magnify-tool",
_("Magnify"),
_("Zoom in & out"),
N_("/Tools/Magnify"), NULL,
NULL, "tools/magnify.html",
GIMP_STOCK_TOOL_ZOOM,
data);
}
GType
gimp_magnify_tool_get_type (void)
{
static GType tool_type = 0;
if (! tool_type)
{
static const GTypeInfo tool_info =
{
sizeof (GimpMagnifyToolClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_magnify_tool_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpMagnifyTool),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_magnify_tool_init,
};
tool_type = g_type_register_static (GIMP_TYPE_DRAW_TOOL,
"GimpMagnifyTool",
&tool_info, 0);
}
return tool_type;
}
/* private functions */
static void
gimp_magnify_tool_class_init (GimpMagnifyToolClass *klass)
{
GimpToolClass *tool_class;
GimpDrawToolClass *draw_tool_class;
tool_class = GIMP_TOOL_CLASS (klass);
draw_tool_class = GIMP_DRAW_TOOL_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
tool_class->button_press = gimp_magnify_tool_button_press;
tool_class->button_release = gimp_magnify_tool_button_release;
tool_class->motion = gimp_magnify_tool_motion;
tool_class->modifier_key = gimp_magnify_tool_modifier_key;
tool_class->cursor_update = gimp_magnify_tool_cursor_update;
draw_tool_class->draw = gimp_magnify_tool_draw;
}
static void
gimp_magnify_tool_init (GimpMagnifyTool *magnify_tool)
{
GimpTool *tool;
tool = GIMP_TOOL (magnify_tool);
magnify_tool->x = 0;
magnify_tool->y = 0;
magnify_tool->w = 0;
magnify_tool->h = 0;
gimp_tool_control_set_scroll_lock (tool->control, TRUE);
gimp_tool_control_set_snap_to (tool->control, FALSE);
gimp_tool_control_set_cursor (tool->control,
GIMP_ZOOM_CURSOR);
gimp_tool_control_set_tool_cursor (tool->control,
GIMP_ZOOM_TOOL_CURSOR);
gimp_tool_control_set_cursor_modifier (tool->control,
GIMP_CURSOR_MODIFIER_PLUS);
gimp_tool_control_set_tool_cursor (tool->control,
GIMP_ZOOM_CURSOR);
gimp_tool_control_set_toggle_tool_cursor (tool->control,
GIMP_ZOOM_TOOL_CURSOR);
gimp_tool_control_set_toggle_cursor_modifier (tool->control,
GIMP_CURSOR_MODIFIER_MINUS);
}
static void
gimp_magnify_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpMagnifyTool *magnify;
magnify = GIMP_MAGNIFY_TOOL (tool);
magnify->x = coords->x;
magnify->y = coords->y;
magnify->w = 0;
magnify->h = 0;
gimp_tool_control_activate (tool->control);
tool->gdisp = gdisp;
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), gdisp);
}
static void
gimp_magnify_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpMagnifyTool *magnify;
MagnifyOptions *options;
GimpDisplayShell *shell;
gint win_width, win_height;
gint width, height;
gint scalesrc, scaledest;
gint scale;
gint x1, y1, x2, y2, w, h;
magnify = GIMP_MAGNIFY_TOOL (tool);
options = (MagnifyOptions *) tool->tool_info->tool_options;
shell = GIMP_DISPLAY_SHELL (tool->gdisp->shell);
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool));
gimp_tool_control_halt (tool->control); /* sets paused_count to 0 -- is this ok? */
/* First take care of the case where the user "cancels" the action */
if (! (state & GDK_BUTTON3_MASK))
{
x1 = (magnify->w < 0) ? magnify->x + magnify->w : magnify->x;
y1 = (magnify->h < 0) ? magnify->y + magnify->h : magnify->y;
w = (magnify->w < 0) ? -magnify->w : magnify->w;
h = (magnify->h < 0) ? -magnify->h : magnify->h;
x2 = x1 + w;
y2 = y1 + h;
/* these change the user zoom level, so should not be changed to
* the resolution-aware scale macros -- austin
*/
scalesrc = SCALESRC (shell);
scaledest = SCALEDEST (shell);
win_width = shell->disp_width;
win_height = shell->disp_height;
width = (win_width * scalesrc) / scaledest;
height = (win_height * scalesrc) / scaledest;
/* we need to compute the mouse movement in screen coordinates */
if ( (SCALEX (shell, w) < options->threshold) ||
(SCALEY (shell, h) < options->threshold) )
scale = 1;
else
scale = MIN ((width / w), (height / h));
magnify->op = options->type;
switch (magnify->op)
{
case GIMP_ZOOM_IN:
zoom_in (&scalesrc, &scaledest, scale);
break;
case GIMP_ZOOM_OUT:
zoom_out (&scalesrc, &scaledest, scale);
break;
}
gimp_display_shell_scale_by_values (shell,
(scaledest << 8) + scalesrc,
((scaledest * ((x1 + x2) / 2)) / scalesrc -
(win_width / 2)),
((scaledest * ((y1 + y2) / 2)) / scalesrc -
(win_height / 2)),
options->allow_resize);
}
}
static void
gimp_magnify_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpMagnifyTool *magnify;
if (!gimp_tool_control_is_active (tool->control))
return;
magnify = GIMP_MAGNIFY_TOOL (tool);
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
magnify->w = (coords->x - magnify->x);
magnify->h = (coords->y - magnify->y);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_magnify_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *gdisp)
{
MagnifyOptions *options;
options = (MagnifyOptions *) tool->tool_info->tool_options;
if (key == GDK_CONTROL_MASK)
{
switch (options->type)
{
case GIMP_ZOOM_IN:
gimp_radio_group_set_active (GTK_RADIO_BUTTON (options->type_w),
GINT_TO_POINTER (GIMP_ZOOM_OUT));
break;
case GIMP_ZOOM_OUT:
gimp_radio_group_set_active (GTK_RADIO_BUTTON (options->type_w),
GINT_TO_POINTER (GIMP_ZOOM_IN));
break;
default:
break;
}
}
}
static void
gimp_magnify_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
MagnifyOptions *options;
options = (MagnifyOptions *) tool->tool_info->tool_options;
gimp_tool_control_set_toggle (tool->control, (options->type == GIMP_ZOOM_OUT));
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, gdisp);
}
static void
gimp_magnify_tool_draw (GimpDrawTool *draw_tool)
{
GimpMagnifyTool *magnify;
MagnifyOptions *options;
magnify = GIMP_MAGNIFY_TOOL (draw_tool);
options = (MagnifyOptions *) GIMP_TOOL (draw_tool)->tool_info->tool_options;
gimp_draw_tool_draw_rectangle (draw_tool,
FALSE,
magnify->x,
magnify->y,
magnify->w,
magnify->h,
FALSE);
}
/* magnify utility functions */
static void
zoom_in (gint *src,
gint *dest,
gint scale)
{
while (scale--)
{
if (*src > 1)
(*src)--;
else
if (*dest < 0x10)
(*dest)++;
}
}
static void
zoom_out (gint *src,
gint *dest,
gint scale)
{
while (scale--)
{
if (*dest > 1)
(*dest)--;
else
if (*src < 0x10)
(*src)++;
}
}
/* magnify tool options functions */
static GimpToolOptions *
magnify_options_new (GimpToolInfo *tool_info)
{
MagnifyOptions *options;
GtkWidget *vbox;
GtkWidget *frame;
GtkWidget *table;
options = g_new0 (MagnifyOptions, 1);
tool_options_init ((GimpToolOptions *) options, tool_info);
((GimpToolOptions *) options)->reset_func = magnify_options_reset;
options->allow_resize = gimprc.resize_windows_on_zoom;
options->type_d = options->type = GIMP_ZOOM_IN;
options->threshold_d = options->threshold = 5;
/* the main vbox */
vbox = options->tool_options.main_vbox;
/* the allow_resize toggle button */
options->allow_resize_w =
gtk_check_button_new_with_label (_("Allow Window Resizing"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (options->allow_resize_w),
options->allow_resize);
gtk_box_pack_start (GTK_BOX (vbox), options->allow_resize_w,
FALSE, FALSE, 0);
gtk_widget_show (options->allow_resize_w);
g_signal_connect (G_OBJECT (options->allow_resize_w), "toggled",
G_CALLBACK (gimp_toggle_button_update),
&options->allow_resize);
/* tool toggle */
frame = gimp_enum_radio_frame_new (GIMP_TYPE_ZOOM_TYPE,
gtk_label_new (_("Tool Toggle (<Ctrl>)")),
2,
G_CALLBACK (gimp_radio_button_update),
&options->type,
&options->type_w);
gimp_radio_group_set_active (GTK_RADIO_BUTTON (options->type_w),
GINT_TO_POINTER (options->type));
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
/* window threshold */
table = gtk_table_new (1, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 2);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
gtk_widget_show (table);
options->threshold_w = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("Threshold:"), -1, 50,
options->threshold,
1.0, 15.0, 1.0, 3.0, 1,
TRUE, 0.0, 0.0,
NULL, NULL);
g_signal_connect (G_OBJECT (options->threshold_w), "value_changed",
G_CALLBACK (gimp_double_adjustment_update),
&options->threshold);
return (GimpToolOptions *) options;
}
static void
magnify_options_reset (GimpToolOptions *tool_options)
{
MagnifyOptions *options;
options = (MagnifyOptions *) tool_options;
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (options->allow_resize_w),
gimprc.resize_windows_on_zoom);
gimp_radio_group_set_active (GTK_RADIO_BUTTON (options->type_w),
GINT_TO_POINTER (options->type_d));
gtk_adjustment_set_value (GTK_ADJUSTMENT (options->threshold_w),
options->threshold_d);
}
Reference in New Issue View Git Blame Copy Permalink