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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 <https://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 "config/gimpcoreconfig.h"
#include "core/gimp-cairo.h"
#include "core/gimpgrid.h"
#include "core/gimplayer.h"
#include "gimpcanvas.h"
#include "gimpcanvas-style.h"
/* Styles for common and custom guides. */
static GeglColor *guide_normal_fg;
static GeglColor *guide_normal_bg;
static GeglColor *guide_active_fg;
static GeglColor *guide_active_bg;
static GeglColor *guide_mirror_normal_fg;
static GeglColor *guide_mirror_normal_bg;
static GeglColor *guide_mirror_active_fg;
static GeglColor *guide_mirror_active_bg;
static GeglColor *guide_mandala_normal_fg;
static GeglColor *guide_mandala_normal_bg;
static GeglColor *guide_mandala_active_fg;
static GeglColor *guide_mandala_active_bg;
static GeglColor *guide_split_normal_fg;
static GeglColor *guide_split_normal_bg;
static GeglColor *guide_split_active_fg;
static GeglColor *guide_split_active_bg;
/* Styles for other canvas items. */
static GeglColor *sample_point_normal;
static GeglColor *sample_point_active;
static GeglColor *layer_fg;
static GeglColor *layer_bg;
static GeglColor *layer_group_fg;
static GeglColor *layer_group_bg;
static GeglColor *layer_mask_fg;
static GeglColor *layer_mask_bg;
static GeglColor *canvas_fg;
static GeglColor *canvas_bg;
static GeglColor *selection_out_fg;
static GeglColor *selection_out_bg;
static GeglColor *selection_in_fg;
static GeglColor *selection_in_bg;
static GeglColor *vectors_normal_bg;
static GeglColor *vectors_normal_fg;
static GeglColor *vectors_active_bg;
static GeglColor *vectors_active_fg;
static GeglColor *outline_bg;
static GeglColor *outline_fg;
static GeglColor *passe_partout;
static GeglColor *tool_bg;
static GeglColor *tool_fg;
static GeglColor *tool_fg_highlight;
/* public functions */
void
gimp_canvas_styles_init (void)
{
const Babl *format = babl_format ("R'G'B'A double");
gdouble rgba1[4] = { 0.0, 0.8, 1.0, 1.0 };
gdouble rgba2[4] = { 1.0, 0.5, 0.0, 1.0 };
gdouble rgba3[4] = { 1.0, 0.8, 0.2, 0.8 };
/* Styles for common and custom guides. */
guide_normal_fg = gegl_color_new ("black");
guide_normal_bg = gegl_color_new (NULL);
gegl_color_set_pixel (guide_normal_bg, format, rgba1);
guide_active_fg = gegl_color_new ("black");
guide_active_bg = gegl_color_new ("red");
guide_mirror_normal_fg = gegl_color_new ("white");
guide_mirror_normal_bg = gegl_color_new ("lime");
guide_mirror_active_fg = gegl_color_new ("lime");
guide_mirror_active_bg = gegl_color_new ("red");
guide_mandala_normal_fg = gegl_color_new ("white");
guide_mandala_normal_bg = gegl_color_new ("aqua");
guide_mandala_active_fg = gegl_color_new ("aqua");
guide_mandala_active_bg = gegl_color_new ("red");
guide_split_normal_fg = gegl_color_new ("white");
guide_split_normal_bg = gegl_color_new ("fuchsia");
guide_split_active_fg = gegl_color_new ("fuchsia");
guide_split_active_bg = gegl_color_new ("red");
/* Styles for other canvas items. */
sample_point_normal = gegl_color_new (NULL);
gegl_color_set_pixel (sample_point_normal, format, rgba1);
sample_point_active = gegl_color_new ("red");
layer_fg = gegl_color_new ("black");
layer_bg = gegl_color_new ("yellow");
layer_group_fg = gegl_color_new ("black");
layer_group_bg = gegl_color_new ("aqua");
layer_mask_fg = gegl_color_new ("black");
layer_mask_bg = gegl_color_new ("lime");
canvas_fg = gegl_color_new ("black");
canvas_bg = gegl_color_new (NULL);
gegl_color_set_pixel (canvas_bg, format, rgba2);
selection_out_fg = gegl_color_new ("white");
selection_out_bg = gegl_color_new ("gray");
selection_in_fg = gegl_color_new ("black");
selection_in_bg = gegl_color_new ("white");
vectors_normal_bg = gegl_color_new ("white");
gimp_color_set_alpha (vectors_normal_bg, 0.6);
vectors_normal_fg = gegl_color_new ("blue");
gimp_color_set_alpha (vectors_normal_fg, 0.8);
vectors_active_bg = gegl_color_new ("white");
gimp_color_set_alpha (vectors_active_bg, 0.6);
vectors_active_fg = gegl_color_new ("red");
gimp_color_set_alpha (vectors_active_fg, 0.8);
outline_bg = gegl_color_new ("white");
gimp_color_set_alpha (outline_bg, 0.6);
outline_fg = gegl_color_new ("black");
gimp_color_set_alpha (outline_fg, 0.8);
passe_partout = gegl_color_new ("black");
tool_bg = gegl_color_new ("black");
gimp_color_set_alpha (tool_bg, 0.4);
tool_fg = gegl_color_new ("white");
gimp_color_set_alpha (tool_fg, 0.8);
tool_fg_highlight = gegl_color_new (NULL);
gegl_color_set_pixel (tool_fg_highlight, format, rgba3);
}
void
gimp_canvas_styles_exit (void)
{
g_object_unref (guide_normal_fg);
g_object_unref (guide_normal_bg);
g_object_unref (guide_active_fg);
g_object_unref (guide_active_bg);
g_object_unref (guide_mirror_normal_fg);
g_object_unref (guide_mirror_normal_bg);
g_object_unref (guide_mirror_active_fg);
g_object_unref (guide_mirror_active_bg);
g_object_unref (guide_mandala_normal_fg);
g_object_unref (guide_mandala_normal_bg);
g_object_unref (guide_mandala_active_fg);
g_object_unref (guide_mandala_active_bg);
g_object_unref (guide_split_normal_fg);
g_object_unref (guide_split_normal_bg);
g_object_unref (guide_split_active_fg);
g_object_unref (guide_split_active_bg);
g_object_unref (sample_point_normal);
g_object_unref (sample_point_active);
g_object_unref (layer_fg);
g_object_unref (layer_bg);
g_object_unref (layer_group_fg);
g_object_unref (layer_group_bg);
g_object_unref (layer_mask_fg);
g_object_unref (layer_mask_bg);
g_object_unref (canvas_fg);
g_object_unref (canvas_bg);
g_object_unref (selection_out_fg);
g_object_unref (selection_out_bg);
g_object_unref (selection_in_fg);
g_object_unref (selection_in_bg);
g_object_unref (vectors_normal_bg);
g_object_unref (vectors_normal_fg);
g_object_unref (vectors_active_bg);
g_object_unref (vectors_active_fg);
g_object_unref (outline_bg);
g_object_unref (outline_fg);
g_object_unref (passe_partout);
g_object_unref (tool_bg);
g_object_unref (tool_fg);
g_object_unref (tool_fg_highlight);
}
void
gimp_canvas_set_guide_style (GtkWidget *canvas,
cairo_t *cr,
GimpGuideStyle style,
gboolean active,
gdouble offset_x,
gdouble offset_y)
{
const Babl *render_space;
GimpColorConfig *config;
cairo_pattern_t *pattern;
GeglColor *normal_fg;
GeglColor *normal_bg;
GeglColor *active_fg;
GeglColor *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);
config = GIMP_CORE_CONFIG (GIMP_CANVAS (canvas)->config)->color_management;
render_space = gimp_widget_get_render_space (canvas, config);
if (active)
pattern = gimp_cairo_pattern_create_stipple (active_fg, active_bg, 0,
offset_x, offset_y, render_space);
else
pattern = gimp_cairo_pattern_create_stipple (normal_fg, normal_bg, 0,
offset_x, offset_y, render_space);
cairo_set_source (cr, pattern);
cairo_pattern_destroy (pattern);
}
void
gimp_canvas_set_sample_point_style (GtkWidget *canvas,
cairo_t *cr,
gboolean active)
{
GimpColorConfig *config;
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
cairo_set_line_width (cr, 1.0);
config = GIMP_CORE_CONFIG (GIMP_CANVAS (canvas)->config)->color_management;
if (active)
gimp_cairo_set_source_color (cr, sample_point_active, config, FALSE, canvas);
else
gimp_cairo_set_source_color (cr, sample_point_normal, config, FALSE, canvas);
}
void
gimp_canvas_set_grid_style (GtkWidget *canvas,
cairo_t *cr,
GimpGrid *grid,
gdouble offset_x,
gdouble offset_y)
{
const Babl *render_space;
GimpColorConfig *config;
GeglColor *fg;
GeglColor *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);
fg = gimp_grid_get_fgcolor (grid);
config = GIMP_CORE_CONFIG (GIMP_CANVAS (canvas)->config)->color_management;
render_space = gimp_widget_get_render_space (canvas, config);
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)
{
bg = gimp_grid_get_bgcolor (grid);
pattern = gimp_cairo_pattern_create_stipple (fg, bg, 0,
offset_x, offset_y,
render_space);
}
else
{
bg = gegl_color_new ("transparent");
pattern = gimp_cairo_pattern_create_stipple (fg, bg, 0,
offset_x, offset_y,
render_space);
g_clear_object (&bg);
}
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_color (cr, fg, config, FALSE, canvas);
break;
}
}
void
gimp_canvas_set_pen_style (GtkWidget *canvas,
cairo_t *cr,
GeglColor *color,
gint width)
{
GimpColorConfig *config;
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
g_return_if_fail (GEGL_IS_COLOR (color));
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);
config = GIMP_CORE_CONFIG (GIMP_CANVAS (canvas)->config)->color_management;
gimp_cairo_set_source_color (cr, color, config, FALSE, canvas);
}
void
gimp_canvas_set_layer_style (GtkWidget *canvas,
cairo_t *cr,
GimpLayer *layer,
gdouble offset_x,
gdouble offset_y)
{
const Babl *render_space;
GimpColorConfig *config;
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);
config = GIMP_CORE_CONFIG (GIMP_CANVAS (canvas)->config)->color_management;
render_space = gimp_widget_get_render_space (canvas, config);
if (gimp_layer_get_mask (layer) &&
gimp_layer_get_edit_mask (layer))
{
pattern = gimp_cairo_pattern_create_stipple (layer_mask_fg,
layer_mask_bg,
0,
offset_x, offset_y, render_space);
}
else if (gimp_viewable_get_children (GIMP_VIEWABLE (layer)))
{
pattern = gimp_cairo_pattern_create_stipple (layer_group_fg, layer_group_bg, 0,
offset_x, offset_y, render_space);
}
else
{
pattern = gimp_cairo_pattern_create_stipple (layer_fg, layer_bg, 0,
offset_x, offset_y, render_space);
}
cairo_set_source (cr, pattern);
cairo_pattern_destroy (pattern);
}
void
gimp_canvas_set_canvas_style (GtkWidget *canvas,
cairo_t *cr,
gdouble offset_x,
gdouble offset_y)
{
const Babl *render_space;
GimpColorConfig *config;
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);
config = GIMP_CORE_CONFIG (GIMP_CANVAS (canvas)->config)->color_management;
render_space = gimp_widget_get_render_space (canvas, config);
pattern = gimp_cairo_pattern_create_stipple (canvas_fg, canvas_bg, 0,
offset_x, offset_y, render_space);
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)
{
const Babl *render_space;
GimpColorConfig *config;
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);
config = GIMP_CORE_CONFIG (GIMP_CANVAS (canvas)->config)->color_management;
render_space = gimp_widget_get_render_space (canvas, config);
pattern = gimp_cairo_pattern_create_stipple (selection_out_fg, selection_out_bg, 0,
offset_x, offset_y, render_space);
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)
{
const Babl *render_space;
GimpColorConfig *config;
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);
config = GIMP_CORE_CONFIG (GIMP_CANVAS (canvas)->config)->color_management;
render_space = gimp_widget_get_render_space (canvas, config);
pattern = gimp_cairo_pattern_create_stipple (selection_in_fg, selection_in_bg, index,
offset_x, offset_y, render_space);
cairo_set_source (cr, pattern);
cairo_pattern_destroy (pattern);
}
void
gimp_canvas_set_vectors_bg_style (GtkWidget *canvas,
cairo_t *cr,
gboolean active)
{
GimpColorConfig *config;
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
cairo_set_line_width (cr, 3.0);
config = GIMP_CORE_CONFIG (GIMP_CANVAS (canvas)->config)->color_management;
if (active)
gimp_cairo_set_source_color (cr, vectors_active_bg, config, FALSE, canvas);
else
gimp_cairo_set_source_color (cr, vectors_normal_bg, config, FALSE, canvas);
}
void
gimp_canvas_set_vectors_fg_style (GtkWidget *canvas,
cairo_t *cr,
gboolean active)
{
GimpColorConfig *config;
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
cairo_set_line_width (cr, 1.0);
config = GIMP_CORE_CONFIG (GIMP_CANVAS (canvas)->config)->color_management;
if (active)
gimp_cairo_set_source_color (cr, vectors_active_fg, config, FALSE, canvas);
else
gimp_cairo_set_source_color (cr, vectors_normal_fg, config, FALSE, canvas);
}
void
gimp_canvas_set_outline_bg_style (GtkWidget *canvas,
cairo_t *cr)
{
GimpColorConfig *config;
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
cairo_set_line_width (cr, 1.0);
config = GIMP_CORE_CONFIG (GIMP_CANVAS (canvas)->config)->color_management;
gimp_cairo_set_source_color (cr, outline_bg, config, FALSE, canvas);
}
void
gimp_canvas_set_outline_fg_style (GtkWidget *canvas,
cairo_t *cr)
{
static const double dashes[] = { 4.0, 4.0 };
GimpColorConfig *config;
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
cairo_set_line_width (cr, 1.0);
config = GIMP_CORE_CONFIG (GIMP_CANVAS (canvas)->config)->color_management;
gimp_cairo_set_source_color (cr, outline_fg, config, FALSE, canvas);
cairo_set_dash (cr, dashes, G_N_ELEMENTS (dashes), 0);
}
void
gimp_canvas_set_passe_partout_style (GtkWidget *canvas,
cairo_t *cr)
{
GimpColorConfig *config;
g_return_if_fail (GTK_IS_WIDGET (canvas));
g_return_if_fail (cr != NULL);
config = GIMP_CORE_CONFIG (GIMP_CANVAS (canvas)->config)->color_management;
gimp_cairo_set_source_color (cr, passe_partout, config, FALSE, canvas);
}
void
gimp_canvas_set_tool_bg_style (GtkWidget *canvas,
cairo_t *cr)
{
GimpColorConfig *config;
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);
config = GIMP_CORE_CONFIG (GIMP_CANVAS (canvas)->config)->color_management;
gimp_cairo_set_source_color (cr, tool_bg, config, FALSE, canvas);
}
void
gimp_canvas_set_tool_fg_style (GtkWidget *canvas,
cairo_t *cr,
gboolean highlight)
{
GimpColorConfig *config;
g_return_if_fail (cr != NULL);
cairo_set_line_width (cr, 1.0);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
config = GIMP_CORE_CONFIG (GIMP_CANVAS (canvas)->config)->color_management;
if (highlight)
gimp_cairo_set_source_color (cr, tool_fg_highlight, config, FALSE, canvas);
else
gimp_cairo_set_source_color (cr, tool_fg, config, FALSE, canvas);
}
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