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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/gimpcanvasline.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/gimpcanvasline.c | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/app/display/gimpcanvasline.c b/app/display/gimpcanvasline.c new file mode 100644 index 0000000..38a00c8 --- /dev/null +++ b/app/display/gimpcanvasline.c @@ -0,0 +1,281 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * gimpcanvasline.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 "gimpcanvasline.h" +#include "gimpdisplayshell.h" + + +enum +{ + PROP_0, + PROP_X1, + PROP_Y1, + PROP_X2, + PROP_Y2 +}; + + +typedef struct _GimpCanvasLinePrivate GimpCanvasLinePrivate; + +struct _GimpCanvasLinePrivate +{ + gdouble x1; + gdouble y1; + gdouble x2; + gdouble y2; +}; + +#define GET_PRIVATE(line) \ + ((GimpCanvasLinePrivate *) gimp_canvas_line_get_instance_private ((GimpCanvasLine *) (line))) + + +/* local function prototypes */ + +static void gimp_canvas_line_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec); +static void gimp_canvas_line_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec); +static void gimp_canvas_line_draw (GimpCanvasItem *item, + cairo_t *cr); +static cairo_region_t * gimp_canvas_line_get_extents (GimpCanvasItem *item); + + +G_DEFINE_TYPE_WITH_PRIVATE (GimpCanvasLine, gimp_canvas_line, + GIMP_TYPE_CANVAS_ITEM) + +#define parent_class gimp_canvas_line_parent_class + + +static void +gimp_canvas_line_class_init (GimpCanvasLineClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GimpCanvasItemClass *item_class = GIMP_CANVAS_ITEM_CLASS (klass); + + object_class->set_property = gimp_canvas_line_set_property; + object_class->get_property = gimp_canvas_line_get_property; + + item_class->draw = gimp_canvas_line_draw; + item_class->get_extents = gimp_canvas_line_get_extents; + + g_object_class_install_property (object_class, PROP_X1, + g_param_spec_double ("x1", NULL, NULL, + -GIMP_MAX_IMAGE_SIZE, + GIMP_MAX_IMAGE_SIZE, 0, + GIMP_PARAM_READWRITE)); + + g_object_class_install_property (object_class, PROP_Y1, + g_param_spec_double ("y1", NULL, NULL, + -GIMP_MAX_IMAGE_SIZE, + GIMP_MAX_IMAGE_SIZE, 0, + GIMP_PARAM_READWRITE)); + + g_object_class_install_property (object_class, PROP_X2, + g_param_spec_double ("x2", NULL, NULL, + -GIMP_MAX_IMAGE_SIZE, + GIMP_MAX_IMAGE_SIZE, 0, + GIMP_PARAM_READWRITE)); + + g_object_class_install_property (object_class, PROP_Y2, + g_param_spec_double ("y2", NULL, NULL, + -GIMP_MAX_IMAGE_SIZE, + GIMP_MAX_IMAGE_SIZE, 0, + GIMP_PARAM_READWRITE)); +} + +static void +gimp_canvas_line_init (GimpCanvasLine *line) +{ +} + +static void +gimp_canvas_line_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec) +{ + GimpCanvasLinePrivate *private = GET_PRIVATE (object); + + switch (property_id) + { + case PROP_X1: + private->x1 = g_value_get_double (value); + break; + case PROP_Y1: + private->y1 = g_value_get_double (value); + break; + case PROP_X2: + private->x2 = g_value_get_double (value); + break; + case PROP_Y2: + private->y2 = g_value_get_double (value); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static void +gimp_canvas_line_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec) +{ + GimpCanvasLinePrivate *private = GET_PRIVATE (object); + + switch (property_id) + { + case PROP_X1: + g_value_set_double (value, private->x1); + break; + case PROP_Y1: + g_value_set_double (value, private->y1); + break; + case PROP_X2: + g_value_set_double (value, private->x2); + break; + case PROP_Y2: + g_value_set_double (value, private->y2); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static void +gimp_canvas_line_transform (GimpCanvasItem *item, + gdouble *x1, + gdouble *y1, + gdouble *x2, + gdouble *y2) +{ + GimpCanvasLinePrivate *private = GET_PRIVATE (item); + + gimp_canvas_item_transform_xy_f (item, + private->x1, private->y1, + x1, y1); + gimp_canvas_item_transform_xy_f (item, + private->x2, private->y2, + x2, y2); + + *x1 = floor (*x1) + 0.5; + *y1 = floor (*y1) + 0.5; + *x2 = floor (*x2) + 0.5; + *y2 = floor (*y2) + 0.5; +} + +static void +gimp_canvas_line_draw (GimpCanvasItem *item, + cairo_t *cr) +{ + gdouble x1, y1; + gdouble x2, y2; + + gimp_canvas_line_transform (item, &x1, &y1, &x2, &y2); + + cairo_move_to (cr, x1, y1); + cairo_line_to (cr, x2, y2); + + _gimp_canvas_item_stroke (item, cr); +} + +static cairo_region_t * +gimp_canvas_line_get_extents (GimpCanvasItem *item) +{ + cairo_rectangle_int_t rectangle; + gdouble x1, y1; + gdouble x2, y2; + + gimp_canvas_line_transform (item, &x1, &y1, &x2, &y2); + + if (x1 == x2 || y1 == y2) + { + rectangle.x = MIN (x1, x2) - 1.5; + rectangle.y = MIN (y1, y2) - 1.5; + rectangle.width = ABS (x2 - x1) + 3.0; + rectangle.height = ABS (y2 - y1) + 3.0; + } + else + { + rectangle.x = floor (MIN (x1, x2) - 2.5); + rectangle.y = floor (MIN (y1, y2) - 2.5); + rectangle.width = ceil (ABS (x2 - x1) + 5.0); + rectangle.height = ceil (ABS (y2 - y1) + 5.0); + } + + return cairo_region_create_rectangle (&rectangle); +} + +GimpCanvasItem * +gimp_canvas_line_new (GimpDisplayShell *shell, + gdouble x1, + gdouble y1, + gdouble x2, + gdouble y2) +{ + g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL); + + return g_object_new (GIMP_TYPE_CANVAS_LINE, + "shell", shell, + "x1", x1, + "y1", y1, + "x2", x2, + "y2", y2, + NULL); +} + +void +gimp_canvas_line_set (GimpCanvasItem *line, + gdouble x1, + gdouble y1, + gdouble x2, + gdouble y2) +{ + g_return_if_fail (GIMP_IS_CANVAS_LINE (line)); + + gimp_canvas_item_begin_change (line); + + g_object_set (line, + "x1", x1, + "y1", y1, + "x2", x2, + "y2", y2, + NULL); + + gimp_canvas_item_end_change (line); +} |