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/*
* tool_sekect.c
*
* Colloquium - A tiny presentation program
*
* Copyright (c) 2011 Thomas White <taw@bitwiz.org.uk>
*
* 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 <http://www.gnu.org/licenses/>.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "presentation.h"
#include "objects.h"
#include "mainwindow.h"
#include "slide_render.h"
struct select_toolinfo
{
struct toolinfo base;
double drag_offs_x;
double drag_offs_y;
};
static void click_create(struct presentation *p, struct toolinfo *tip,
double x, double y)
{
/* Do absolutely nothing */
}
static void click_select(struct presentation *p, struct toolinfo *tip,
double x, double y)
{
struct select_toolinfo *ti = (struct select_toolinfo *)tip;
struct object *clicked = p->editing_object;
ti->drag_offs_x = clicked->x - x;
ti->drag_offs_y = clicked->y - y;
}
static void drag_object(struct toolinfo *tip, struct presentation *p,
struct object *o, double x, double y)
{
struct select_toolinfo *ti = (struct select_toolinfo *)tip;
double eright, ebottom;
o->x = x + ti->drag_offs_x;
o->y = y + ti->drag_offs_y;
/* Enforce margins */
eright = o->parent->parent->slide_width - o->style->margin_right;
ebottom = o->parent->parent->slide_height - o->style->margin_bottom;
if ( o->x < o->style->margin_left ) o->x = o->style->margin_left;
if ( o->y < o->style->margin_top ) o->y = o->style->margin_top;
if ( o->x+o->bb_width > eright ) o->x = eright - o->bb_width;
if ( o->y+o->bb_height > ebottom ) o->y = ebottom - o->bb_height;
o->update_object(o);
p->view_slide->object_seq++;
gdk_window_invalidate_rect(p->drawingarea->window, NULL, FALSE);
}
static void start_drag_create(struct toolinfo *tip, struct presentation *p,
double x, double y)
{
/* Do nothing */
}
static void drag_create(struct toolinfo *tip, struct presentation *p,
double x, double y)
{
/* Do nothing */
}
static void finish_drag_create(struct toolinfo *tip, struct presentation *p,
double x, double y)
{
/* Do nothing */
}
static void select_object(struct object *o,struct toolinfo *tip)
{
/* Do nothing */
}
static int deselect_object(struct object *o,struct toolinfo *tip)
{
/* Do nothing */
return 0;
}
static void draw_overlay(struct toolinfo *tip, cairo_t *cr, struct object *o)
{
if ( o != NULL ) {
draw_editing_box(cr, o->x, o->y, o->bb_width, o->bb_height);
}
}
static void key_pressed(struct object *o, guint keyval, struct toolinfo *tip)
{
/* Do nothing */
}
static void im_commit(struct object *o, gchar *str, struct toolinfo *tip)
{
/* Do nothing */
}
struct toolinfo *initialise_select_tool()
{
struct select_toolinfo *ti;
ti = malloc(sizeof(*ti));
ti->base.click_create = click_create;
ti->base.click_select = click_select;
ti->base.create_default = NULL;
ti->base.select = select_object;
ti->base.deselect = deselect_object;
ti->base.drag_object = drag_object;
ti->base.start_drag_create = start_drag_create;
ti->base.drag_create = drag_create;
ti->base.finish_drag_create = finish_drag_create;
ti->base.draw_editing_overlay = draw_overlay;
ti->base.key_pressed = key_pressed;
ti->base.im_commit = im_commit;
return (struct toolinfo *)ti;
}
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