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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/gimpcanvasguide.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/gimpcanvasguide.c | 295 |
1 files changed, 295 insertions, 0 deletions
diff --git a/app/display/gimpcanvasguide.c b/app/display/gimpcanvasguide.c new file mode 100644 index 0000000..5712633 --- /dev/null +++ b/app/display/gimpcanvasguide.c @@ -0,0 +1,295 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * gimpcanvasguide.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-style.h" +#include "gimpcanvasguide.h" +#include "gimpdisplayshell.h" + + +enum +{ + PROP_0, + PROP_ORIENTATION, + PROP_POSITION, + PROP_STYLE +}; + + +typedef struct _GimpCanvasGuidePrivate GimpCanvasGuidePrivate; + +struct _GimpCanvasGuidePrivate +{ + GimpOrientationType orientation; + gint position; + + GimpGuideStyle style; +}; + +#define GET_PRIVATE(guide) \ + ((GimpCanvasGuidePrivate *) gimp_canvas_guide_get_instance_private ((GimpCanvasGuide *) (guide))) + + +/* local function prototypes */ + +static void gimp_canvas_guide_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec); +static void gimp_canvas_guide_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec); +static void gimp_canvas_guide_draw (GimpCanvasItem *item, + cairo_t *cr); +static cairo_region_t * gimp_canvas_guide_get_extents (GimpCanvasItem *item); +static void gimp_canvas_guide_stroke (GimpCanvasItem *item, + cairo_t *cr); + + +G_DEFINE_TYPE_WITH_PRIVATE (GimpCanvasGuide, gimp_canvas_guide, + GIMP_TYPE_CANVAS_ITEM) + +#define parent_class gimp_canvas_guide_parent_class + + +static void +gimp_canvas_guide_class_init (GimpCanvasGuideClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GimpCanvasItemClass *item_class = GIMP_CANVAS_ITEM_CLASS (klass); + + object_class->set_property = gimp_canvas_guide_set_property; + object_class->get_property = gimp_canvas_guide_get_property; + + item_class->draw = gimp_canvas_guide_draw; + item_class->get_extents = gimp_canvas_guide_get_extents; + item_class->stroke = gimp_canvas_guide_stroke; + + g_object_class_install_property (object_class, PROP_ORIENTATION, + g_param_spec_enum ("orientation", NULL, NULL, + GIMP_TYPE_ORIENTATION_TYPE, + GIMP_ORIENTATION_HORIZONTAL, + GIMP_PARAM_READWRITE)); + + g_object_class_install_property (object_class, PROP_POSITION, + g_param_spec_int ("position", NULL, NULL, + -GIMP_MAX_IMAGE_SIZE, + GIMP_MAX_IMAGE_SIZE, 0, + GIMP_PARAM_READWRITE)); + + g_object_class_install_property (object_class, PROP_STYLE, + g_param_spec_enum ("style", NULL, NULL, + GIMP_TYPE_GUIDE_STYLE, + GIMP_GUIDE_STYLE_NONE, + GIMP_PARAM_READWRITE)); +} + +static void +gimp_canvas_guide_init (GimpCanvasGuide *guide) +{ +} + +static void +gimp_canvas_guide_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec) +{ + GimpCanvasGuidePrivate *private = GET_PRIVATE (object); + + switch (property_id) + { + case PROP_ORIENTATION: + private->orientation = g_value_get_enum (value); + break; + case PROP_POSITION: + private->position = g_value_get_int (value); + break; + case PROP_STYLE: + private->style = g_value_get_enum (value); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static void +gimp_canvas_guide_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec) +{ + GimpCanvasGuidePrivate *private = GET_PRIVATE (object); + + switch (property_id) + { + case PROP_ORIENTATION: + g_value_set_enum (value, private->orientation); + break; + case PROP_POSITION: + g_value_set_int (value, private->position); + break; + case PROP_STYLE: + g_value_set_enum (value, private->style); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static void +gimp_canvas_guide_transform (GimpCanvasItem *item, + gdouble *x1, + gdouble *y1, + gdouble *x2, + gdouble *y2) +{ + GimpCanvasGuidePrivate *private = GET_PRIVATE (item); + GtkWidget *canvas = gimp_canvas_item_get_canvas (item); + GtkAllocation allocation; + gint max_outside; + gint x, y; + + gtk_widget_get_allocation (canvas, &allocation); + + max_outside = allocation.width + allocation.height; + + *x1 = -max_outside; + *y1 = -max_outside; + *x2 = allocation.width + max_outside; + *y2 = allocation.height + max_outside; + + switch (private->orientation) + { + case GIMP_ORIENTATION_HORIZONTAL: + gimp_canvas_item_transform_xy (item, 0, private->position, &x, &y); + *y1 = *y2 = y + 0.5; + break; + + case GIMP_ORIENTATION_VERTICAL: + gimp_canvas_item_transform_xy (item, private->position, 0, &x, &y); + *x1 = *x2 = x + 0.5; + break; + + case GIMP_ORIENTATION_UNKNOWN: + return; + } +} + +static void +gimp_canvas_guide_draw (GimpCanvasItem *item, + cairo_t *cr) +{ + gdouble x1, y1; + gdouble x2, y2; + + gimp_canvas_guide_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_guide_get_extents (GimpCanvasItem *item) +{ + cairo_rectangle_int_t rectangle; + gdouble x1, y1; + gdouble x2, y2; + + gimp_canvas_guide_transform (item, &x1, &y1, &x2, &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; + + return cairo_region_create_rectangle (&rectangle); +} + +static void +gimp_canvas_guide_stroke (GimpCanvasItem *item, + cairo_t *cr) +{ + GimpCanvasGuidePrivate *private = GET_PRIVATE (item); + + if (private->style != GIMP_GUIDE_STYLE_NONE) + { + GimpDisplayShell *shell = gimp_canvas_item_get_shell (item); + + gimp_canvas_set_guide_style (gimp_canvas_item_get_canvas (item), cr, + private->style, + gimp_canvas_item_get_highlight (item), + shell->offset_x, shell->offset_y); + cairo_stroke (cr); + } + else + { + GIMP_CANVAS_ITEM_CLASS (parent_class)->stroke (item, cr); + } +} + +GimpCanvasItem * +gimp_canvas_guide_new (GimpDisplayShell *shell, + GimpOrientationType orientation, + gint position, + GimpGuideStyle style) +{ + g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL); + + return g_object_new (GIMP_TYPE_CANVAS_GUIDE, + "shell", shell, + "orientation", orientation, + "position", position, + "style", style, + NULL); +} + +void +gimp_canvas_guide_set (GimpCanvasItem *guide, + GimpOrientationType orientation, + gint position) +{ + g_return_if_fail (GIMP_IS_CANVAS_GUIDE (guide)); + + gimp_canvas_item_begin_change (guide); + + g_object_set (guide, + "orientation", orientation, + "position", position, + NULL); + + gimp_canvas_item_end_change (guide); +} |