diff options
author | Thomas White <taw@bitwiz.org.uk> | 2011-10-03 12:09:50 +0200 |
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committer | Thomas White <taw@bitwiz.org.uk> | 2011-10-03 12:10:12 +0200 |
commit | f4ff26c955729f8b068c64fff806216eb6e34bd4 (patch) | |
tree | 577a756353ac09f53e818b8f19292d3ce6326e12 /src/tool_select.c | |
parent | 9a5060c094813d908d4c9ef7b8631916939bb53d (diff) |
Use dispatch tables for tool functions
Diffstat (limited to 'src/tool_select.c')
-rw-r--r-- | src/tool_select.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/tool_select.c b/src/tool_select.c new file mode 100644 index 0000000..2931372 --- /dev/null +++ b/src/tool_select.c @@ -0,0 +1,111 @@ +/* + * 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" + + +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 create_default(struct presentation *p, struct style *sty) +{ + /* 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; + + o->x = x + ti->drag_offs_x; + o->y = y + ti->drag_offs_y; + + p->view_slide->object_seq++; + + /* FIXME: Invalidate only the necessary region */ + gdk_window_invalidate_rect(p->drawingarea->window, + NULL, FALSE); +} + + +static void select_object(struct object *o,struct toolinfo *tip) +{ + /* Do nothing */ +} + + +static void deselect_object(struct object *o,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 = create_default; + ti->base.select = select_object; + ti->base.deselect = deselect_object; + ti->base.drag_object = drag_object; + + return (struct toolinfo *)ti; +} |