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gimp/app/display/gimpcanvas-style.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpcanvas-style.c
* Copyright (C) 2010 Michael Natterer <mitch@gimp.org>
*
* 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 <gegl.h>
#include <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "display-types.h"
#include "core/gimp-cairo.h"
#include "core/gimpgrid.h"
#include "core/gimplayer.h"
#include "gimpcanvas-style.h"
/* Styles for common and custom guides. */
static const GimpRGB guide_normal_fg = { 0.0, 0.0, 0.0, 1.0 };
static const GimpRGB guide_normal_bg = { 0.0, 0.5, 1.0, 1.0 };
static const GimpRGB guide_active_fg = { 0.0, 0.0, 0.0, 1.0 };
static const GimpRGB guide_active_bg = { 1.0, 0.0, 0.0, 1.0 };
static const GimpRGB guide_mirror_normal_fg = { 1.0, 1.0, 1.0, 1.0 };
static const GimpRGB guide_mirror_normal_bg = { 0.0, 1.0, 0.0, 1.0 };
static const GimpRGB guide_mirror_active_fg = { 0.0, 1.0, 0.0, 1.0 };
static const GimpRGB guide_mirror_active_bg = { 1.0, 0.0, 0.0, 1.0 };
static const GimpRGB guide_mandala_normal_fg = { 1.0, 1.0, 1.0, 1.0 };
static const GimpRGB guide_mandala_normal_bg = { 0.0, 1.0, 1.0, 1.0 };
static const GimpRGB guide_mandala_active_fg = { 0.0, 1.0, 1.0, 1.0 };
static const GimpRGB guide_mandala_active_bg = { 1.0, 0.0, 0.0, 1.0 };
static const GimpRGB guide_split_normal_fg = { 1.0, 1.0, 1.0, 1.0 };
static const GimpRGB guide_split_normal_bg = { 1.0, 0.0, 1.0, 1.0 };
static const GimpRGB guide_split_active_fg = { 1.0, 0.0, 1.0, 1.0 };
static const GimpRGB guide_split_active_bg = { 1.0, 0.0, 0.0, 1.0 };
/* Styles for other canvas items. */
static const GimpRGB sample_point_normal = { 0.0, 0.5, 1.0, 1.0 };
static const GimpRGB sample_point_active = { 1.0, 0.0, 0.0, 1.0 };
static const GimpRGB layer_fg = { 0.0, 0.0, 0.0, 1.0 };
static const GimpRGB layer_bg = { 1.0, 1.0, 0.0, 1.0 };
static const GimpRGB layer_group_fg = { 0.0, 0.0, 0.0, 1.0 };
static const GimpRGB layer_group_bg = { 0.0, 1.0, 1.0, 1.0 };
static const GimpRGB layer_mask_fg = { 0.0, 0.0, 0.0, 1.0 };
static const GimpRGB layer_mask_bg = { 0.0, 1.0, 0.0, 1.0 };
static const GimpRGB selection_out_fg = { 1.0, 1.0, 1.0, 1.0 };
static const GimpRGB selection_out_bg = { 0.5, 0.5, 0.5, 1.0 };
static const GimpRGB selection_in_fg = { 0.0, 0.0, 0.0, 1.0 };
static const GimpRGB selection_in_bg = { 1.0, 1.0, 1.0, 1.0 };
static const GimpRGB vectors_normal_bg = { 1.0, 1.0, 1.0, 0.6 };
static const GimpRGB vectors_normal_fg = { 0.0, 0.0, 1.0, 0.8 };
static const GimpRGB vectors_active_bg = { 1.0, 1.0, 1.0, 0.6 };
static const GimpRGB vectors_active_fg = { 1.0, 0.0, 0.0, 0.8 };
static const GimpRGB outline_bg = { 1.0, 1.0, 1.0, 0.6 };
static const GimpRGB outline_fg = { 0.0, 0.0, 0.0, 0.8 };
static const GimpRGB passe_partout = { 0.0, 0.0, 0.0, 0.5 };
static const GimpRGB tool_bg = { 0.0, 0.0, 0.0, 0.4 };
static const GimpRGB tool_fg = { 1.0, 1.0, 1.0, 0.8 };
static const GimpRGB tool_fg_highlight = { 1.0, 0.8, 0.2, 0.8 };
/* public functions */
void
gimp_canvas_set_guide_style (GtkWidget *canvas,
cairo_t *cr,
GimpGuideStyle style,
gboolean active,
gdouble offset_x,
gdouble offset_y)
{
cairo_pattern_t *pattern;
GimpRGB normal_fg;
GimpRGB normal_bg;
GimpRGB active_fg;
GimpRGB active_bg;
gdouble line_width;
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
switch (style)
{
case GIMP_GUIDE_STYLE_NORMAL:
normal_fg = guide_normal_fg;
normal_bg = guide_normal_bg;
active_fg = guide_active_fg;
active_bg = guide_active_bg;
line_width = 1.0;
break;
case GIMP_GUIDE_STYLE_MIRROR:
normal_fg = guide_mirror_normal_fg;
normal_bg = guide_mirror_normal_bg;
active_fg = guide_mirror_active_fg;
active_bg = guide_mirror_active_bg;
line_width = 1.0;
break;
case GIMP_GUIDE_STYLE_MANDALA:
normal_fg = guide_mandala_normal_fg;
normal_bg = guide_mandala_normal_bg;
active_fg = guide_mandala_active_fg;
active_bg = guide_mandala_active_bg;
line_width = 1.0;
break;
case GIMP_GUIDE_STYLE_SPLIT_VIEW:
normal_fg = guide_split_normal_fg;
normal_bg = guide_split_normal_bg;
active_fg = guide_split_active_fg;
active_bg = guide_split_active_bg;
line_width = 1.0;
break;
default: /* GIMP_GUIDE_STYLE_NONE */
/* This should not happen. */
g_return_if_reached ();
}
cairo_set_line_width (cr, line_width);
if (active)
pattern = gimp_cairo_stipple_pattern_create (&active_fg, &active_bg, 0,
offset_x, offset_y);
else
pattern = gimp_cairo_stipple_pattern_create (&normal_fg, &normal_bg, 0,
offset_x, offset_y);
cairo_set_source (cr, pattern);
cairo_pattern_destroy (pattern);
}
void
gimp_canvas_set_sample_point_style (GtkWidget *canvas,
cairo_t *cr,
gboolean active)
{
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
cairo_set_line_width (cr, 1.0);
if (active)
gimp_cairo_set_source_rgb (cr, &sample_point_active);
else
gimp_cairo_set_source_rgb (cr, &sample_point_normal);
}
void
gimp_canvas_set_grid_style (GtkWidget *canvas,
cairo_t *cr,
GimpGrid *grid,
gdouble offset_x,
gdouble offset_y)
{
GimpRGB fg;
GimpRGB bg;
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
g_return_if_fail (GIMP_IS_GRID (grid));
cairo_set_line_width (cr, 1.0);
gimp_grid_get_fgcolor (grid, &fg);
switch (gimp_grid_get_style (grid))
{
cairo_pattern_t *pattern;
case GIMP_GRID_ON_OFF_DASH:
case GIMP_GRID_DOUBLE_DASH:
if (grid->style == GIMP_GRID_DOUBLE_DASH)
{
gimp_grid_get_bgcolor (grid, &bg);
pattern = gimp_cairo_stipple_pattern_create (&fg, &bg, 0,
offset_x, offset_y);
}
else
{
gimp_rgba_set (&bg, 0.0, 0.0, 0.0, 0.0);
pattern = gimp_cairo_stipple_pattern_create (&fg, &bg, 0,
offset_x, offset_y);
}
cairo_set_source (cr, pattern);
cairo_pattern_destroy (pattern);
break;
case GIMP_GRID_DOTS:
case GIMP_GRID_INTERSECTIONS:
case GIMP_GRID_SOLID:
gimp_cairo_set_source_rgb (cr, &fg);
break;
}
}
void
gimp_canvas_set_pen_style (GtkWidget *canvas,
cairo_t *cr,
const GimpRGB *color,
gint width)
{
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
g_return_if_fail (color != NULL);
cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
cairo_set_line_width (cr, width);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
gimp_cairo_set_source_rgb (cr, color);
}
void
gimp_canvas_set_layer_style (GtkWidget *canvas,
cairo_t *cr,
GimpLayer *layer,
gdouble offset_x,
gdouble offset_y)
{
cairo_pattern_t *pattern;
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
g_return_if_fail (GIMP_IS_LAYER (layer));
cairo_set_line_width (cr, 1.0);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
if (gimp_layer_get_mask (layer) &&
gimp_layer_get_edit_mask (layer))
{
pattern = gimp_cairo_stipple_pattern_create (&layer_mask_fg,
&layer_mask_bg,
0,
offset_x, offset_y);
}
else if (gimp_viewable_get_children (GIMP_VIEWABLE (layer)))
{
pattern = gimp_cairo_stipple_pattern_create (&layer_group_fg,
&layer_group_bg,
0,
offset_x, offset_y);
}
else
{
pattern = gimp_cairo_stipple_pattern_create (&layer_fg,
&layer_bg,
0,
offset_x, offset_y);
}
cairo_set_source (cr, pattern);
cairo_pattern_destroy (pattern);
}
void
gimp_canvas_set_selection_out_style (GtkWidget *canvas,
cairo_t *cr,
gdouble offset_x,
gdouble offset_y)
{
cairo_pattern_t *pattern;
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
cairo_set_line_width (cr, 1.0);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
pattern = gimp_cairo_stipple_pattern_create (&selection_out_fg,
&selection_out_bg,
0,
offset_x, offset_y);
cairo_set_source (cr, pattern);
cairo_pattern_destroy (pattern);
}
void
gimp_canvas_set_selection_in_style (GtkWidget *canvas,
cairo_t *cr,
gint index,
gdouble offset_x,
gdouble offset_y)
{
cairo_pattern_t *pattern;
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
cairo_set_line_width (cr, 1.0);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
pattern = gimp_cairo_stipple_pattern_create (&selection_in_fg,
&selection_in_bg,
index,
offset_x, offset_y);
cairo_set_source (cr, pattern);
cairo_pattern_destroy (pattern);
}
void
gimp_canvas_set_vectors_bg_style (GtkWidget *canvas,
cairo_t *cr,
gboolean active)
{
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
cairo_set_line_width (cr, 3.0);
if (active)
gimp_cairo_set_source_rgba (cr, &vectors_active_bg);
else
gimp_cairo_set_source_rgba (cr, &vectors_normal_bg);
}
void
gimp_canvas_set_vectors_fg_style (GtkWidget *canvas,
cairo_t *cr,
gboolean active)
{
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
cairo_set_line_width (cr, 1.0);
if (active)
gimp_cairo_set_source_rgba (cr, &vectors_active_fg);
else
gimp_cairo_set_source_rgba (cr, &vectors_normal_fg);
}
void
gimp_canvas_set_outline_bg_style (GtkWidget *canvas,
cairo_t *cr)
{
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
cairo_set_line_width (cr, 1.0);
gimp_cairo_set_source_rgba (cr, &outline_bg);
}
void
gimp_canvas_set_outline_fg_style (GtkWidget *canvas,
cairo_t *cr)
{
static const double dashes[] = { 4.0, 4.0 };
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
cairo_set_line_width (cr, 1.0);
gimp_cairo_set_source_rgba (cr, &outline_fg);
cairo_set_dash (cr, dashes, G_N_ELEMENTS (dashes), 0);
}
void
gimp_canvas_set_passe_partout_style (GtkWidget *canvas,
cairo_t *cr)
{
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
gimp_cairo_set_source_rgba (cr, &passe_partout);
}
void
gimp_canvas_set_tool_bg_style (GtkWidget *canvas,
cairo_t *cr)
{
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
cairo_set_line_width (cr, 3.0);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
gimp_cairo_set_source_rgba (cr, &tool_bg);
}
void
gimp_canvas_set_tool_fg_style (GtkWidget *canvas,
cairo_t *cr,
gboolean highlight)
{
g_return_if_fail (cr != NULL);
cairo_set_line_width (cr, 1.0);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
if (highlight)
gimp_cairo_set_source_rgba (cr, &tool_fg_highlight);
else
gimp_cairo_set_source_rgba (cr, &tool_fg);
}
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