mirror of https://github.com/GNOME/gimp.git
353 lines
8.9 KiB
C
353 lines
8.9 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 <stdlib.h>
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#include "appenv.h"
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#include "color_area.h"
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#include "color_notebook.h"
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#include "colormaps.h"
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#include "palette.h"
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#define FORE_AREA 0
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#define BACK_AREA 1
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#define SWAP_AREA 2
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#define DEF_AREA 3
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/* Global variables */
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int active_color = 0;
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/* Static variables */
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static GdkGC *color_area_gc = NULL;
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static GtkWidget *color_area = NULL;
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static GdkPixmap *color_area_pixmap = NULL;
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static GdkPixmap *default_pixmap = NULL;
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static GdkPixmap *swap_pixmap = NULL;
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static ColorNotebookP color_notebook = NULL;
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static int color_notebook_active = 0;
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static int edit_color;
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static unsigned char revert_fg_r, revert_fg_g, revert_fg_b;
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static unsigned char revert_bg_r, revert_bg_g, revert_bg_b;
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/* Local functions */
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static int
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color_area_target (int x,
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int y)
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{
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int rect_w, rect_h;
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int width, height;
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gdk_window_get_size (color_area_pixmap, &width, &height);
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rect_w = width * 0.65;
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rect_h = height * 0.65;
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/* foreground active */
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if (x > 0 && x < rect_w &&
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y > 0 && y < rect_h)
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return FORE_AREA;
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else if (x > (width - rect_w) && x < width &&
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y > (height - rect_h) && y < height)
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return BACK_AREA;
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else if (x > 0 && x < (width - rect_w) &&
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y > rect_h && y < height)
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return DEF_AREA;
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else if (x > rect_w && x < width &&
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y > 0 && y < (height - rect_h))
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return SWAP_AREA;
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else
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return -1;
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}
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void
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color_area_draw_rect (GdkDrawable *drawable,
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GdkGC *gc,
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gint x, gint y, gint width, gint height,
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unsigned char r, unsigned char g, unsigned char b)
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{
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static unsigned char *color_area_rgb_buf = NULL;
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static gint color_area_rgb_buf_size;
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static gint rowstride;
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gint xx, yy;
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unsigned char *bp;
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rowstride = 3 * ((width + 3) & -4);
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if (color_area_rgb_buf == NULL ||
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color_area_rgb_buf_size < height * rowstride)
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{
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if (color_area_rgb_buf)
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g_free (color_area_rgb_buf);
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color_area_rgb_buf = g_malloc (rowstride * height);
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}
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bp = color_area_rgb_buf;
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for (xx = 0; xx < width; xx++)
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{
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*bp++ = r;
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*bp++ = g;
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*bp++ = b;
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}
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bp = color_area_rgb_buf;
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for (yy = 1; yy < height; yy++)
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{
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bp += rowstride;
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memcpy (bp, color_area_rgb_buf, rowstride);
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}
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gdk_draw_rgb_image (drawable, gc, x, y, width, height,
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GDK_RGB_DITHER_MAX,
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color_area_rgb_buf,
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rowstride);
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}
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static void
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color_area_draw (void)
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{
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GdkColor *win_bg;
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GdkColor fg, bg, bd;
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int rect_w, rect_h;
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int width, height;
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int def_width, def_height;
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int swap_width, swap_height;
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unsigned char r, g, b;
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/* Check we haven't gotten initial expose yet,
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* no point in drawing anything */
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if (!color_area_pixmap || !color_area_gc)
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return;
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gdk_window_get_size (color_area_pixmap, &width, &height);
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win_bg = &(color_area->style->bg[GTK_STATE_NORMAL]);
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fg.pixel = foreground_pixel;
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bg.pixel = background_pixel;
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bd.pixel = g_black_pixel;
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rect_w = width * 0.65;
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rect_h = height * 0.65;
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gdk_gc_set_foreground (color_area_gc, win_bg);
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gdk_draw_rectangle (color_area_pixmap, color_area_gc, 1,
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0, 0, width, height);
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#ifdef OLD_COLOR_AREA
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gdk_gc_set_foreground (color_area_gc, &bg);
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gdk_draw_rectangle (color_area_pixmap, color_area_gc, 1,
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(width - rect_w), (height - rect_h), rect_w, rect_h);
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#else
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palette_get_background (&r, &g, &b);
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color_area_draw_rect (color_area_pixmap, color_area_gc,
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(width - rect_w), (height - rect_h), rect_w, rect_h,
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r, g, b);
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#endif
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if (active_color == FOREGROUND)
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gtk_draw_shadow (color_area->style, color_area_pixmap, GTK_STATE_NORMAL, GTK_SHADOW_OUT,
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(width - rect_w), (height - rect_h), rect_w, rect_h);
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else
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gtk_draw_shadow (color_area->style, color_area_pixmap, GTK_STATE_NORMAL, GTK_SHADOW_IN,
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(width - rect_w), (height - rect_h), rect_w, rect_h);
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#ifdef OLD_COLOR_AREA
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gdk_gc_set_foreground (color_area_gc, &fg);
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gdk_draw_rectangle (color_area_pixmap, color_area_gc, 1,
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0, 0, rect_w, rect_h);
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#else
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palette_get_foreground (&r, &g, &b);
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color_area_draw_rect (color_area_pixmap, color_area_gc,
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0, 0, rect_w, rect_h,
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r, g, b);
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#endif
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if (active_color == FOREGROUND)
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gtk_draw_shadow (color_area->style, color_area_pixmap, GTK_STATE_NORMAL, GTK_SHADOW_IN,
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0, 0, rect_w, rect_h);
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else
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gtk_draw_shadow (color_area->style, color_area_pixmap, GTK_STATE_NORMAL, GTK_SHADOW_OUT,
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0, 0, rect_w, rect_h);
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gdk_window_get_size (default_pixmap, &def_width, &def_height);
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gdk_draw_pixmap (color_area_pixmap, color_area_gc, default_pixmap,
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0, 0, 0, height - def_height, def_width, def_height);
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gdk_window_get_size (swap_pixmap, &swap_width, &swap_height);
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gdk_draw_pixmap (color_area_pixmap, color_area_gc, swap_pixmap,
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0, 0, width - swap_width, 0, swap_width, swap_height);
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gdk_draw_pixmap (color_area->window, color_area_gc, color_area_pixmap,
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0, 0, 0, 0, width, height);
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}
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static void
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color_area_select_callback (int r,
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int g,
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int b,
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ColorNotebookState state,
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void *client_data)
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{
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if (color_notebook)
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{
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switch (state) {
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case COLOR_NOTEBOOK_OK:
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color_notebook_hide (color_notebook);
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color_notebook_active = 0;
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/* Fallthrough */
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case COLOR_NOTEBOOK_UPDATE:
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if (edit_color == FOREGROUND)
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palette_set_foreground (r, g, b);
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else
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palette_set_background (r, g, b);
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break;
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case COLOR_NOTEBOOK_CANCEL:
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color_notebook_hide (color_notebook);
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color_notebook_active = 0;
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palette_set_foreground (revert_fg_r, revert_fg_g, revert_fg_b);
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palette_set_background (revert_bg_r, revert_bg_g, revert_bg_b);
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}
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}
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}
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static void
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color_area_edit (void)
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{
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unsigned char r, g, b;
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if (!color_notebook_active)
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{
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palette_get_foreground (&revert_fg_r, &revert_fg_g, &revert_fg_b);
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palette_get_background (&revert_bg_r, &revert_bg_g, &revert_bg_b);
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}
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if (active_color == FOREGROUND)
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{
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palette_get_foreground (&r, &g, &b);
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edit_color = FOREGROUND;
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}
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else
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{
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palette_get_background (&r, &g, &b);
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edit_color = BACKGROUND;
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}
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if (! color_notebook)
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{
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color_notebook = color_notebook_new (r, g, b, color_area_select_callback, NULL, TRUE);
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color_notebook_active = 1;
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}
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else
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{
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if (! color_notebook_active)
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color_notebook_show (color_notebook);
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else
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gdk_window_raise (color_notebook->shell->window);
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color_notebook_set_color (color_notebook, r, g, b, 1);
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}
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}
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static gint
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color_area_events (GtkWidget *widget,
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GdkEvent *event)
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{
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GdkEventButton *bevent;
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int target;
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switch (event->type)
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{
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case GDK_CONFIGURE:
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if (color_area_pixmap)
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gdk_pixmap_unref (color_area_pixmap);
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color_area_pixmap = gdk_pixmap_new (widget->window,
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widget->allocation.width,
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widget->allocation.height, -1);
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break;
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case GDK_EXPOSE:
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if (GTK_WIDGET_DRAWABLE (widget))
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{
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if (!color_area_gc)
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color_area_gc = gdk_gc_new (widget->window);
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color_area_draw ();
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}
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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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{
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switch ((target = color_area_target (bevent->x, bevent->y)))
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{
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case FORE_AREA:
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case BACK_AREA:
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if (target == active_color)
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color_area_edit ();
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else
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{
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active_color = target;
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color_area_draw ();
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}
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break;
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case SWAP_AREA:
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palette_swap_colors();
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color_area_draw ();
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break;
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case DEF_AREA:
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palette_set_default_colors();
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color_area_draw ();
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break;
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}
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}
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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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GtkWidget *
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color_area_create (int width,
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int height,
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GdkPixmap *default_pmap,
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GdkPixmap *swap_pmap)
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{
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color_area = gtk_drawing_area_new ();
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gtk_drawing_area_size (GTK_DRAWING_AREA (color_area), width, height);
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gtk_widget_set_events (color_area, GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK);
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gtk_signal_connect (GTK_OBJECT (color_area), "event",
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(GtkSignalFunc) color_area_events,
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NULL);
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default_pixmap = default_pmap;
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swap_pixmap = swap_pmap;
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return color_area;
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}
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void
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color_area_update ()
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{
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color_area_draw ();
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}
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