diff options
Diffstat (limited to 'app/display/gimpcanvastextcursor.c')
| -rw-r--r-- | app/display/gimpcanvastextcursor.c | 386 |
1 files changed, 386 insertions, 0 deletions
diff --git a/app/display/gimpcanvastextcursor.c b/app/display/gimpcanvastextcursor.c new file mode 100644 index 0000000..aaa8c5f --- /dev/null +++ b/app/display/gimpcanvastextcursor.c @@ -0,0 +1,386 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * gimpcanvastextcursor.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 "gimpcanvastextcursor.h" +#include "gimpdisplayshell.h" + + +enum +{ + PROP_0, + PROP_X, + PROP_Y, + PROP_WIDTH, + PROP_HEIGHT, + PROP_OVERWRITE, + PROP_DIRECTION +}; + + +typedef struct _GimpCanvasTextCursorPrivate GimpCanvasTextCursorPrivate; + +struct _GimpCanvasTextCursorPrivate +{ + gint x; + gint y; + gint width; + gint height; + gboolean overwrite; + GimpTextDirection direction; +}; + +#define GET_PRIVATE(text_cursor) \ + ((GimpCanvasTextCursorPrivate *) gimp_canvas_text_cursor_get_instance_private ((GimpCanvasTextCursor *) (text_cursor))) + + +/* local function prototypes */ + +static void gimp_canvas_text_cursor_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec); +static void gimp_canvas_text_cursor_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec); +static void gimp_canvas_text_cursor_draw (GimpCanvasItem *item, + cairo_t *cr); +static cairo_region_t * gimp_canvas_text_cursor_get_extents (GimpCanvasItem *item); + + +G_DEFINE_TYPE_WITH_PRIVATE (GimpCanvasTextCursor, gimp_canvas_text_cursor, + GIMP_TYPE_CANVAS_ITEM) + +#define parent_class gimp_canvas_text_cursor_parent_class + + +static void +gimp_canvas_text_cursor_class_init (GimpCanvasTextCursorClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GimpCanvasItemClass *item_class = GIMP_CANVAS_ITEM_CLASS (klass); + + object_class->set_property = gimp_canvas_text_cursor_set_property; + object_class->get_property = gimp_canvas_text_cursor_get_property; + + item_class->draw = gimp_canvas_text_cursor_draw; + item_class->get_extents = gimp_canvas_text_cursor_get_extents; + + 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_WIDTH, + g_param_spec_int ("width", NULL, NULL, + -GIMP_MAX_IMAGE_SIZE, + GIMP_MAX_IMAGE_SIZE, 0, + GIMP_PARAM_READWRITE)); + + g_object_class_install_property (object_class, PROP_HEIGHT, + g_param_spec_int ("height", NULL, NULL, + -GIMP_MAX_IMAGE_SIZE, + GIMP_MAX_IMAGE_SIZE, 0, + GIMP_PARAM_READWRITE)); + + g_object_class_install_property (object_class, PROP_OVERWRITE, + g_param_spec_boolean ("overwrite", NULL, NULL, + FALSE, + GIMP_PARAM_READWRITE)); + + g_object_class_install_property (object_class, PROP_DIRECTION, + g_param_spec_enum ("direction", NULL, NULL, + gimp_text_direction_get_type(), + GIMP_TEXT_DIRECTION_LTR, + GIMP_PARAM_READWRITE)); +} + +static void +gimp_canvas_text_cursor_init (GimpCanvasTextCursor *text_cursor) +{ +} + +static void +gimp_canvas_text_cursor_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec) +{ + GimpCanvasTextCursorPrivate *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_WIDTH: + private->width = g_value_get_int (value); + break; + case PROP_HEIGHT: + private->height = g_value_get_int (value); + break; + case PROP_OVERWRITE: + private->overwrite = g_value_get_boolean (value); + break; + case PROP_DIRECTION: + private->direction = g_value_get_enum (value); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static void +gimp_canvas_text_cursor_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec) +{ + GimpCanvasTextCursorPrivate *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->y); + break; + case PROP_WIDTH: + g_value_set_int (value, private->width); + break; + case PROP_HEIGHT: + g_value_set_int (value, private->height); + break; + case PROP_OVERWRITE: + g_value_set_boolean (value, private->overwrite); + break; + case PROP_DIRECTION: + g_value_set_enum (value, private->direction); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static void +gimp_canvas_text_cursor_transform (GimpCanvasItem *item, + gdouble *x, + gdouble *y, + gdouble *w, + gdouble *h) +{ + GimpCanvasTextCursorPrivate *private = GET_PRIVATE (item); + + gimp_canvas_item_transform_xy_f (item, + MIN (private->x, + private->x + private->width), + MIN (private->y, + private->y + private->height), + x, y); + gimp_canvas_item_transform_xy_f (item, + MAX (private->x, + private->x + private->width), + MAX (private->y, + private->y + private->height), + w, h); + + *w -= *x; + *h -= *y; + + *x = floor (*x) + 0.5; + *y = floor (*y) + 0.5; + switch (private->direction) + { + case GIMP_TEXT_DIRECTION_LTR: + case GIMP_TEXT_DIRECTION_RTL: + break; + case GIMP_TEXT_DIRECTION_TTB_RTL: + case GIMP_TEXT_DIRECTION_TTB_RTL_UPRIGHT: + *x = *x - *w; + break; + case GIMP_TEXT_DIRECTION_TTB_LTR: + case GIMP_TEXT_DIRECTION_TTB_LTR_UPRIGHT: + *y = *y + *h; + break; + } + + if (private->overwrite) + { + *w = ceil (*w) - 1.0; + *h = ceil (*h) - 1.0; + } + else + { + switch (private->direction) + { + case GIMP_TEXT_DIRECTION_LTR: + case GIMP_TEXT_DIRECTION_RTL: + *w = 0; + *h = ceil (*h) - 1.0; + break; + case GIMP_TEXT_DIRECTION_TTB_RTL: + case GIMP_TEXT_DIRECTION_TTB_RTL_UPRIGHT: + *w = ceil (*w) - 1.0; + *h = 0; + break; + case GIMP_TEXT_DIRECTION_TTB_LTR: + case GIMP_TEXT_DIRECTION_TTB_LTR_UPRIGHT: + *w = ceil (*w) - 1.0; + *h = 0; + break; + } + } +} + +static void +gimp_canvas_text_cursor_draw (GimpCanvasItem *item, + cairo_t *cr) +{ + GimpCanvasTextCursorPrivate *private = GET_PRIVATE (item); + gdouble x, y; + gdouble w, h; + + gimp_canvas_text_cursor_transform (item, &x, &y, &w, &h); + + if (private->overwrite) + { + cairo_rectangle (cr, x, y, w, h); + } + else + { + switch (private->direction) + { + case GIMP_TEXT_DIRECTION_LTR: + case GIMP_TEXT_DIRECTION_RTL: + cairo_move_to (cr, x, y); + cairo_line_to (cr, x, y + h); + + cairo_move_to (cr, x - 3.0, y); + cairo_line_to (cr, x + 3.0, y); + + cairo_move_to (cr, x - 3.0, y + h); + cairo_line_to (cr, x + 3.0, y + h); + break; + case GIMP_TEXT_DIRECTION_TTB_RTL: + case GIMP_TEXT_DIRECTION_TTB_RTL_UPRIGHT: + case GIMP_TEXT_DIRECTION_TTB_LTR: + case GIMP_TEXT_DIRECTION_TTB_LTR_UPRIGHT: + cairo_move_to (cr, x, y); + cairo_line_to (cr, x + w, y); + + cairo_move_to (cr, x, y - 3.0); + cairo_line_to (cr, x, y + 3.0); + + cairo_move_to (cr, x + w, y - 3.0); + cairo_line_to (cr, x + w, y + 3.0); + break; + } + } + + _gimp_canvas_item_stroke (item, cr); +} + +static cairo_region_t * +gimp_canvas_text_cursor_get_extents (GimpCanvasItem *item) +{ + GimpCanvasTextCursorPrivate *private = GET_PRIVATE (item); + cairo_rectangle_int_t rectangle; + gdouble x, y; + gdouble w, h; + + gimp_canvas_text_cursor_transform (item, &x, &y, &w, &h); + + if (private->overwrite) + { + rectangle.x = floor (x - 1.5); + rectangle.y = floor (y - 1.5); + rectangle.width = ceil (w + 3.0); + rectangle.height = ceil (h + 3.0); + } + else + { + switch (private->direction) + { + case GIMP_TEXT_DIRECTION_LTR: + case GIMP_TEXT_DIRECTION_RTL: + rectangle.x = floor (x - 4.5); + rectangle.y = floor (y - 1.5); + rectangle.width = ceil (9.0); + rectangle.height = ceil (h + 3.0); + break; + case GIMP_TEXT_DIRECTION_TTB_RTL: + case GIMP_TEXT_DIRECTION_TTB_RTL_UPRIGHT: + case GIMP_TEXT_DIRECTION_TTB_LTR: + case GIMP_TEXT_DIRECTION_TTB_LTR_UPRIGHT: + rectangle.x = floor (x - 1.5); + rectangle.y = floor (y - 4.5); + rectangle.width = ceil (w + 3.0); + rectangle.height = ceil (9.0); + break; + } + } + + return cairo_region_create_rectangle (&rectangle); +} + +GimpCanvasItem * +gimp_canvas_text_cursor_new (GimpDisplayShell *shell, + PangoRectangle *cursor, + gboolean overwrite, + GimpTextDirection direction) +{ + g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL); + g_return_val_if_fail (cursor != NULL, NULL); + + return g_object_new (GIMP_TYPE_CANVAS_TEXT_CURSOR, + "shell", shell, + "x", cursor->x, + "y", cursor->y, + "width", cursor->width, + "height", cursor->height, + "overwrite", overwrite, + "direction", direction, + NULL); +} |