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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:30:19 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:30:19 +0000 |
commit | 5c1676dfe6d2f3c837a5e074117b45613fd29a72 (patch) | |
tree | cbffb45144febf451e54061db2b21395faf94bfe /app/display/gimpcanvassamplepoint.c | |
parent | Initial commit. (diff) | |
download | gimp-5c1676dfe6d2f3c837a5e074117b45613fd29a72.tar.xz gimp-5c1676dfe6d2f3c837a5e074117b45613fd29a72.zip |
Adding upstream version 2.10.34.upstream/2.10.34upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | app/display/gimpcanvassamplepoint.c | 356 |
1 files changed, 356 insertions, 0 deletions
diff --git a/app/display/gimpcanvassamplepoint.c b/app/display/gimpcanvassamplepoint.c new file mode 100644 index 0000000..913a5b7 --- /dev/null +++ b/app/display/gimpcanvassamplepoint.c @@ -0,0 +1,356 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * gimpcanvassamplepoint.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 "libgimpbase/gimpbase.h" +#include "libgimpmath/gimpmath.h" + +#include "display-types.h" + +#include "gimpcanvas.h" +#include "gimpcanvas-style.h" +#include "gimpcanvassamplepoint.h" +#include "gimpdisplayshell.h" + + +#define GIMP_SAMPLE_POINT_DRAW_SIZE 14 + + +enum +{ + PROP_0, + PROP_X, + PROP_Y, + PROP_INDEX, + PROP_SAMPLE_POINT_STYLE +}; + + +typedef struct _GimpCanvasSamplePointPrivate GimpCanvasSamplePointPrivate; + +struct _GimpCanvasSamplePointPrivate +{ + gint x; + gint y; + gint index; + gboolean sample_point_style; +}; + +#define GET_PRIVATE(sample_point) \ + ((GimpCanvasSamplePointPrivate *) gimp_canvas_sample_point_get_instance_private ((GimpCanvasSamplePoint *) (sample_point))) + + +/* local function prototypes */ + +static void gimp_canvas_sample_point_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec); +static void gimp_canvas_sample_point_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec); +static void gimp_canvas_sample_point_draw (GimpCanvasItem *item, + cairo_t *cr); +static cairo_region_t * gimp_canvas_sample_point_get_extents (GimpCanvasItem *item); +static void gimp_canvas_sample_point_stroke (GimpCanvasItem *item, + cairo_t *cr); +static void gimp_canvas_sample_point_fill (GimpCanvasItem *item, + cairo_t *cr); + + +G_DEFINE_TYPE_WITH_PRIVATE (GimpCanvasSamplePoint, gimp_canvas_sample_point, + GIMP_TYPE_CANVAS_ITEM) + +#define parent_class gimp_canvas_sample_point_parent_class + + +static void +gimp_canvas_sample_point_class_init (GimpCanvasSamplePointClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GimpCanvasItemClass *item_class = GIMP_CANVAS_ITEM_CLASS (klass); + + object_class->set_property = gimp_canvas_sample_point_set_property; + object_class->get_property = gimp_canvas_sample_point_get_property; + + item_class->draw = gimp_canvas_sample_point_draw; + item_class->get_extents = gimp_canvas_sample_point_get_extents; + item_class->stroke = gimp_canvas_sample_point_stroke; + item_class->fill = gimp_canvas_sample_point_fill; + + g_object_class_install_property (object_class, PROP_X, + g_param_spec_int ("x", NULL, NULL, + -GIMP_MAX_IMAGE_SIZE, + GIMP_MAX_IMAGE_SIZE, 0, + GIMP_PARAM_READWRITE)); + + g_object_class_install_property (object_class, PROP_Y, + g_param_spec_int ("y", NULL, NULL, + -GIMP_MAX_IMAGE_SIZE, + GIMP_MAX_IMAGE_SIZE, 0, + GIMP_PARAM_READWRITE)); + + g_object_class_install_property (object_class, PROP_INDEX, + g_param_spec_int ("index", NULL, NULL, + 0, G_MAXINT, 0, + GIMP_PARAM_READWRITE)); + + g_object_class_install_property (object_class, PROP_SAMPLE_POINT_STYLE, + g_param_spec_boolean ("sample-point-style", + NULL, NULL, + FALSE, + GIMP_PARAM_READWRITE)); +} + +static void +gimp_canvas_sample_point_init (GimpCanvasSamplePoint *sample_point) +{ +} + +static void +gimp_canvas_sample_point_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec) +{ + GimpCanvasSamplePointPrivate *private = GET_PRIVATE (object); + + switch (property_id) + { + case PROP_X: + private->x = g_value_get_int (value); + break; + case PROP_Y: + private->y = g_value_get_int (value); + break; + case PROP_INDEX: + private->index = g_value_get_int (value); + break; + case PROP_SAMPLE_POINT_STYLE: + private->sample_point_style = g_value_get_boolean (value); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static void +gimp_canvas_sample_point_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec) +{ + GimpCanvasSamplePointPrivate *private = GET_PRIVATE (object); + + switch (property_id) + { + case PROP_X: + g_value_set_int (value, private->x); + break; + case PROP_Y: + g_value_set_int (value, private->x); + break; + case PROP_INDEX: + g_value_set_int (value, private->x); + break; + case PROP_SAMPLE_POINT_STYLE: + g_value_set_boolean (value, private->sample_point_style); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static void +gimp_canvas_sample_point_transform (GimpCanvasItem *item, + gdouble *x, + gdouble *y) +{ + GimpCanvasSamplePointPrivate *private = GET_PRIVATE (item); + + gimp_canvas_item_transform_xy_f (item, + private->x + 0.5, + private->y + 0.5, + x, y); + + *x = floor (*x) + 0.5; + *y = floor (*y) + 0.5; +} + +#define HALF_SIZE (GIMP_SAMPLE_POINT_DRAW_SIZE / 2) + +static void +gimp_canvas_sample_point_draw (GimpCanvasItem *item, + cairo_t *cr) +{ + GimpCanvasSamplePointPrivate *private = GET_PRIVATE (item); + GtkWidget *canvas = gimp_canvas_item_get_canvas (item); + PangoLayout *layout; + gdouble x, y; + gint x1, x2, y1, y2; + + gimp_canvas_sample_point_transform (item, &x, &y); + + x1 = x - GIMP_SAMPLE_POINT_DRAW_SIZE; + x2 = x + GIMP_SAMPLE_POINT_DRAW_SIZE; + y1 = y - GIMP_SAMPLE_POINT_DRAW_SIZE; + y2 = y + GIMP_SAMPLE_POINT_DRAW_SIZE; + + cairo_move_to (cr, x, y1); + cairo_line_to (cr, x, y1 + HALF_SIZE); + + cairo_move_to (cr, x, y2); + cairo_line_to (cr, x, y2 - HALF_SIZE); + + cairo_move_to (cr, x1, y); + cairo_line_to (cr, x1 + HALF_SIZE, y); + + cairo_move_to (cr, x2, y); + cairo_line_to (cr, x2 - HALF_SIZE, y); + + cairo_arc_negative (cr, x, y, HALF_SIZE, 0.0, 0.5 * G_PI); + + _gimp_canvas_item_stroke (item, cr); + + layout = gimp_canvas_get_layout (GIMP_CANVAS (canvas), + "%d", private->index); + + cairo_move_to (cr, x + 3, y + 3); + pango_cairo_show_layout (cr, layout); + + _gimp_canvas_item_stroke (item, cr); +} + +static cairo_region_t * +gimp_canvas_sample_point_get_extents (GimpCanvasItem *item) +{ + GimpCanvasSamplePointPrivate *private = GET_PRIVATE (item); + GtkWidget *canvas = gimp_canvas_item_get_canvas (item); + cairo_rectangle_int_t rectangle; + PangoLayout *layout; + PangoRectangle ink; + gdouble x, y; + gint x1, x2, y1, y2; + + gimp_canvas_sample_point_transform (item, &x, &y); + + x1 = floor (x - GIMP_SAMPLE_POINT_DRAW_SIZE); + x2 = ceil (x + GIMP_SAMPLE_POINT_DRAW_SIZE); + y1 = floor (y - GIMP_SAMPLE_POINT_DRAW_SIZE); + y2 = ceil (y + GIMP_SAMPLE_POINT_DRAW_SIZE); + + layout = gimp_canvas_get_layout (GIMP_CANVAS (canvas), + "%d", private->index); + + pango_layout_get_extents (layout, &ink, NULL); + + x2 = MAX (x2, 3 + ink.width); + y2 = MAX (y2, 3 + ink.height); + + rectangle.x = x1 - 1.5; + rectangle.y = y1 - 1.5; + rectangle.width = x2 - x1 + 3.0; + rectangle.height = y2 - y1 + 3.0; + + return cairo_region_create_rectangle (&rectangle); +} + +static void +gimp_canvas_sample_point_stroke (GimpCanvasItem *item, + cairo_t *cr) +{ + GimpCanvasSamplePointPrivate *private = GET_PRIVATE (item); + + if (private->sample_point_style) + { + gimp_canvas_set_tool_bg_style (gimp_canvas_item_get_canvas (item), cr); + cairo_stroke_preserve (cr); + + gimp_canvas_set_sample_point_style (gimp_canvas_item_get_canvas (item), cr, + gimp_canvas_item_get_highlight (item)); + cairo_stroke (cr); + } + else + { + GIMP_CANVAS_ITEM_CLASS (parent_class)->stroke (item, cr); + } +} + +static void +gimp_canvas_sample_point_fill (GimpCanvasItem *item, + cairo_t *cr) +{ + GimpCanvasSamplePointPrivate *private = GET_PRIVATE (item); + + if (private->sample_point_style) + { + gimp_canvas_set_sample_point_style (gimp_canvas_item_get_canvas (item), cr, + gimp_canvas_item_get_highlight (item)); + cairo_fill (cr); + } + else + { + GIMP_CANVAS_ITEM_CLASS (parent_class)->fill (item, cr); + } +} + +GimpCanvasItem * +gimp_canvas_sample_point_new (GimpDisplayShell *shell, + gint x, + gint y, + gint index, + gboolean sample_point_style) +{ + g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL); + + return g_object_new (GIMP_TYPE_CANVAS_SAMPLE_POINT, + "shell", shell, + "x", x, + "y", y, + "index", index, + "sample-point-style", sample_point_style, + NULL); +} + +void +gimp_canvas_sample_point_set (GimpCanvasItem *sample_point, + gint x, + gint y) +{ + g_return_if_fail (GIMP_IS_CANVAS_SAMPLE_POINT (sample_point)); + + gimp_canvas_item_begin_change (sample_point); + + g_object_set (sample_point, + "x", x, + "y", y, + NULL); + + gimp_canvas_item_end_change (sample_point); +} |