mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
106 lines
3.3 KiB
C++
106 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
|
* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is Novell code.
|
|
*
|
|
* The Initial Developer of the Original Code is Novell Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 2006
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Robert O'Callahan (rocallahan@novell.com)
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#include "gfxRect.h"
|
|
|
|
#include "nsMathUtils.h"
|
|
|
|
static bool
|
|
WithinEpsilonOfInteger(gfxFloat aX, gfxFloat aEpsilon)
|
|
{
|
|
return fabs(NS_round(aX) - aX) <= fabs(aEpsilon);
|
|
}
|
|
|
|
bool
|
|
gfxRect::WithinEpsilonOfIntegerPixels(gfxFloat aEpsilon) const
|
|
{
|
|
NS_ASSERTION(-0.5 < aEpsilon && aEpsilon < 0.5, "Nonsense epsilon value");
|
|
return (WithinEpsilonOfInteger(x, aEpsilon) &&
|
|
WithinEpsilonOfInteger(y, aEpsilon) &&
|
|
WithinEpsilonOfInteger(width, aEpsilon) &&
|
|
WithinEpsilonOfInteger(height, aEpsilon));
|
|
}
|
|
|
|
/* Clamp r to CAIRO_COORD_MIN .. CAIRO_COORD_MAX
|
|
* these are to be device coordinates.
|
|
*
|
|
* Cairo is currently using 24.8 fixed point,
|
|
* so -2^24 .. 2^24-1 is our valid
|
|
*/
|
|
|
|
#define CAIRO_COORD_MAX (16777215.0)
|
|
#define CAIRO_COORD_MIN (-16777216.0)
|
|
|
|
void
|
|
gfxRect::Condition()
|
|
{
|
|
// if either x or y is way out of bounds;
|
|
// note that we don't handle negative w/h here
|
|
if (x > CAIRO_COORD_MAX) {
|
|
x = CAIRO_COORD_MAX;
|
|
width = 0.0;
|
|
}
|
|
|
|
if (y > CAIRO_COORD_MAX) {
|
|
y = CAIRO_COORD_MAX;
|
|
height = 0.0;
|
|
}
|
|
|
|
if (x < CAIRO_COORD_MIN) {
|
|
width += x - CAIRO_COORD_MIN;
|
|
if (width < 0.0)
|
|
width = 0.0;
|
|
x = CAIRO_COORD_MIN;
|
|
}
|
|
|
|
if (y < CAIRO_COORD_MIN) {
|
|
height += y - CAIRO_COORD_MIN;
|
|
if (height < 0.0)
|
|
height = 0.0;
|
|
y = CAIRO_COORD_MIN;
|
|
}
|
|
|
|
if (x + width > CAIRO_COORD_MAX) {
|
|
width = CAIRO_COORD_MAX - x;
|
|
}
|
|
|
|
if (y + height > CAIRO_COORD_MAX) {
|
|
height = CAIRO_COORD_MAX - y;
|
|
}
|
|
}
|
|
|