mirror of https://github.com/GNOME/gimp.git
319 lines
8.4 KiB
C
319 lines
8.4 KiB
C
/* The GIMP -- an 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 2 of the License, or
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* (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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*
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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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <math.h>
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#include <stdlib.h>
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#include "appenv.h"
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#include "color_panel.h"
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#include "color_notebook.h"
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#include "colormaps.h"
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#include "gimpdnd.h"
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#define EVENT_MASK GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | \
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GDK_BUTTON_RELEASE_MASK | GDK_ENTER_NOTIFY_MASK | \
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GDK_LEAVE_NOTIFY_MASK
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typedef struct _ColorPanelPrivate ColorPanelPrivate;
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struct _ColorPanelPrivate
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{
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GtkWidget *drawing_area;
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GdkGC *gc;
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gboolean button_down;
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ColorNotebookP color_notebook;
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gboolean color_notebook_active;
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};
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/* local function prototypes */
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static void color_panel_draw (ColorPanel *);
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static gint color_panel_events (GtkWidget *, GdkEvent *);
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static void color_panel_select_callback (gint, gint, gint,
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ColorNotebookState, void *);
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static void color_panel_drag_color (GtkWidget *,
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guchar *, guchar *, guchar *, gpointer);
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static void color_panel_drop_color (GtkWidget *,
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guchar, guchar, guchar, gpointer);
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/* dnd stuff */
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static GtkTargetEntry color_panel_target_table[] =
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{
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GIMP_TARGET_COLOR
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};
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static guint n_color_panel_targets = (sizeof (color_panel_target_table) /
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sizeof (color_panel_target_table[0]));
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/* public functions */
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ColorPanel *
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color_panel_new (guchar *initial,
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gint width,
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gint height)
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{
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ColorPanel *color_panel;
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ColorPanelPrivate *private;
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gint i;
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private = g_new (ColorPanelPrivate, 1);
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private->color_notebook = NULL;
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private->color_notebook_active = FALSE;
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private->gc = NULL;
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private->button_down = FALSE;
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color_panel = g_new (ColorPanel, 1);
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color_panel->private_part = private;
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/* set the initial color */
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for (i = 0; i < 3; i++)
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color_panel->color[i] = (initial) ? initial[i] : 0;
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color_panel->color_panel_widget = gtk_frame_new (NULL);
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gtk_frame_set_shadow_type (GTK_FRAME (color_panel->color_panel_widget),
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GTK_SHADOW_IN);
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/* drawing area */
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private->drawing_area = gtk_drawing_area_new ();
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gtk_drawing_area_size (GTK_DRAWING_AREA (private->drawing_area),
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width, height);
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gtk_widget_set_events (private->drawing_area, EVENT_MASK);
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gtk_signal_connect (GTK_OBJECT (private->drawing_area), "event",
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(GtkSignalFunc) color_panel_events,
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color_panel);
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gtk_object_set_user_data (GTK_OBJECT (private->drawing_area), color_panel);
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gtk_container_add (GTK_CONTAINER (color_panel->color_panel_widget),
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private->drawing_area);
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gtk_widget_show (private->drawing_area);
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/* dnd stuff */
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gtk_drag_source_set (private->drawing_area,
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GDK_BUTTON1_MASK | GDK_BUTTON3_MASK,
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color_panel_target_table, n_color_panel_targets,
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GDK_ACTION_COPY | GDK_ACTION_MOVE);
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gimp_dnd_color_source_set (private->drawing_area,
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color_panel_drag_color, color_panel);
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gtk_drag_dest_set (private->drawing_area,
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GTK_DEST_DEFAULT_HIGHLIGHT |
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GTK_DEST_DEFAULT_MOTION |
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GTK_DEST_DEFAULT_DROP,
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color_panel_target_table, n_color_panel_targets,
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GDK_ACTION_COPY);
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gimp_dnd_color_dest_set (private->drawing_area,
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color_panel_drop_color, color_panel);
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return color_panel;
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}
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void
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color_panel_free (ColorPanel *color_panel)
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{
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ColorPanelPrivate *private;
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private = (ColorPanelPrivate *) color_panel->private_part;
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/* make sure we hide and free color_notebook */
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if (private->color_notebook)
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{
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color_notebook_hide (private->color_notebook);
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color_notebook_free (private->color_notebook);
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}
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if (private->gc)
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gdk_gc_destroy (private->gc);
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g_free (color_panel->private_part);
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g_free (color_panel);
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}
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void
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color_panel_set_color (ColorPanel *color_panel,
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guchar *col)
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{
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ColorPanelPrivate *private = color_panel->private_part;
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color_panel->color[0] = col[0];
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color_panel->color[1] = col[1];
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color_panel->color[2] = col[2];
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if (private->color_notebook_active)
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color_notebook_set_color (private->color_notebook,
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col[0], col[1], col[2], TRUE);
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if (private->gc)
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color_panel_draw (color_panel);
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}
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/* private functions */
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static void
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color_panel_draw (ColorPanel *color_panel)
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{
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GtkWidget *widget;
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ColorPanelPrivate *private;
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GdkColor fg;
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private = (ColorPanelPrivate *) color_panel->private_part;
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widget = private->drawing_area;
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fg.pixel = get_color (color_panel->color[0],
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color_panel->color[1],
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color_panel->color[2]);
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gdk_gc_set_foreground (private->gc, &fg);
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gdk_draw_rectangle (widget->window, private->gc, 1, 0, 0,
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widget->allocation.width, widget->allocation.height);
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}
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static gint
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color_panel_events (GtkWidget *widget,
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GdkEvent *event)
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{
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GdkEventButton *bevent;
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ColorPanel *color_panel;
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ColorPanelPrivate *private;
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color_panel = (ColorPanel *) gtk_object_get_user_data (GTK_OBJECT (widget));
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private = (ColorPanelPrivate *) color_panel->private_part;
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switch (event->type)
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{
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case GDK_EXPOSE:
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if (!private->gc)
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private->gc = gdk_gc_new (widget->window);
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color_panel_draw (color_panel);
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break;
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case GDK_BUTTON_PRESS:
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bevent = (GdkEventButton *) event;
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if (bevent->button == 1)
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private->button_down = TRUE;
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break;
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case GDK_BUTTON_RELEASE:
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bevent = (GdkEventButton *) event;
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if (bevent->button == 1 &&
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private->button_down)
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{
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if (! private->color_notebook)
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{
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private->color_notebook =
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color_notebook_new (color_panel->color[0],
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color_panel->color[1],
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color_panel->color[2],
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color_panel_select_callback,
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color_panel,
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FALSE);
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private->color_notebook_active = TRUE;
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}
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else
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{
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if (! private->color_notebook_active)
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{
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color_notebook_show (private->color_notebook);
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private->color_notebook_active = TRUE;
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}
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color_notebook_set_color (private->color_notebook,
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color_panel->color[0],
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color_panel->color[1],
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color_panel->color[2], 1);
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}
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private->button_down = FALSE;
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}
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break;
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case GDK_LEAVE_NOTIFY:
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private->button_down = FALSE;
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break;
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default:
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break;
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}
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return FALSE;
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}
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static void
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color_panel_select_callback (gint r,
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gint g,
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gint b,
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ColorNotebookState state,
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void *client_data)
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{
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ColorPanel *color_panel;
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ColorPanelPrivate *private;
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color_panel = (ColorPanel *) client_data;
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private = (ColorPanelPrivate *) color_panel->private_part;
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if (private->color_notebook)
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{
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switch (state)
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{
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case COLOR_NOTEBOOK_UPDATE:
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break;
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case COLOR_NOTEBOOK_OK:
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color_panel->color[0] = r;
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color_panel->color[1] = g;
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color_panel->color[2] = b;
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color_panel_draw (color_panel);
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/* Fallthrough */
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case COLOR_NOTEBOOK_CANCEL:
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color_notebook_hide (private->color_notebook);
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private->color_notebook_active = FALSE;
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}
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}
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}
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static void
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color_panel_drag_color (GtkWidget *widget,
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guchar *r,
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guchar *g,
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guchar *b,
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gpointer data)
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{
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ColorPanel *color_panel = data;
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*r = color_panel->color[0];
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*g = color_panel->color[1];
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*b = color_panel->color[2];
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}
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static void
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color_panel_drop_color (GtkWidget *widget,
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guchar r,
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guchar g,
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guchar b,
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gpointer data)
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{
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ColorPanel *color_panel = data;
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ColorPanelPrivate *private = (ColorPanelPrivate *) color_panel->private_part;
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color_panel->color[0] = r;
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color_panel->color[1] = g;
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color_panel->color[2] = b;
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if (private->color_notebook_active)
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color_notebook_set_color (private->color_notebook, r, g, b, TRUE);
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color_panel_draw (color_panel);
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}
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