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/*
* Copyright (c) 2009 Tias Guns
* Copyright (c) 2009 Soren Hauberg
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#pragma once
#include <glib.h>
#include "calibrator-gui.h"
G_BEGIN_DECLS
/*
* Number of blocks. We partition the screen into 'num_blocks' x 'num_blocks'
* rectangles of equal size. We then ask the user to press points that are
* located at the corner closes to the center of the four blocks in the corners
* of the screen. The following ascii art illustrates the situation. We partition
* the screen into 8 blocks in each direction. We then let the user press the
* points marked with 'O'.
*
* +--+--+--+--+--+--+--+--+
* | | | | | | | | |
* +--O--+--+--+--+--+--O--+
* | | | | | | | | |
* +--+--+--+--+--+--+--+--+
* | | | | | | | | |
* +--+--+--+--+--+--+--+--+
* | | | | | | | | |
* +--+--+--+--+--+--+--+--+
* | | | | | | | | |
* +--+--+--+--+--+--+--+--+
* | | | | | | | | |
* +--+--+--+--+--+--+--+--+
* | | | | | | | | |
* +--O--+--+--+--+--+--O--+
* | | | | | | | | |
* +--+--+--+--+--+--+--+--+
*/
#define NUM_BLOCKS 8
/* Names of the points */
enum
{
UL = 0, /* Upper-left */
UR = 1, /* Upper-right */
LL = 2, /* Lower-left */
LR = 3 /* Lower-right */
};
struct Calib
{
/* Geometry of the calibration window */
GdkRectangle geometry;
/* nr of clicks registered */
int num_clicks;
/* click coordinates */
int clicked_x[4], clicked_y[4];
/* Threshold to keep the same point from being clicked twice.
* Set to zero if you don't want this check
*/
int threshold_doubleclick;
/* Threshold to detect mis-clicks (clicks not along axes)
* A lower value forces more precise calibration
* Set to zero if you don't want this check
*/
int threshold_misclick;
};
void reset (struct Calib *c);
gboolean add_click (struct Calib *c,
int x,
int y);
gboolean finish (struct Calib *c,
XYinfo *new_axis,
gboolean *swap);
G_END_DECLS
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