author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 11 May 2010 17:13:44 +0300 | |
branch | RCL_3 |
changeset 70 | 8bfb9186a8b8 |
parent 0 | dd21522fd290 |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (C) 2004, 2006 Apple Computer, Inc. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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|
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#include "config.h" |
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#include "ScrollBar.h" |
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|
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#include <algorithm> |
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|
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using std::max; |
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using std::min; |
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|
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namespace WebCore { |
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|
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Scrollbar::Scrollbar(ScrollbarClient* client, ScrollbarOrientation orientation, ScrollbarControlSize controlSize) |
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: m_client(client) |
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, m_orientation(orientation) |
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, m_controlSize(controlSize) |
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, m_visibleSize(0) |
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, m_totalSize(0) |
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, m_currentPos(0) |
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, m_lineStep(0) |
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, m_pageStep(0) |
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, m_pixelStep(1) |
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{ |
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} |
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|
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bool Scrollbar::setValue(int v) |
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{ |
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v = max(min(v, m_totalSize - m_visibleSize), 0); |
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if (value() == v) |
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return false; // Our value stayed the same. |
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m_currentPos = v; |
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|
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updateThumbPosition(); |
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|
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if (client()) |
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client()->valueChanged(this); |
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return true; |
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} |
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void Scrollbar::setProportion(int visibleSize, int totalSize) |
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{ |
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if (visibleSize == m_visibleSize && totalSize == m_totalSize) |
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return; |
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|
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m_visibleSize = visibleSize; |
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m_totalSize = totalSize; |
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|
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updateThumbProportion(); |
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} |
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|
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void Scrollbar::setSteps(int lineStep, int pageStep, int pixelsPerStep) |
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{ |
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m_lineStep = lineStep; |
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m_pageStep = pageStep; |
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m_pixelStep = 1.0f / pixelsPerStep; |
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} |
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|
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bool Scrollbar::scroll(ScrollDirection direction, ScrollGranularity granularity, float multiplier) |
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{ |
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float step = 0; |
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if ((direction == ScrollUp && m_orientation == VerticalScrollbar) || (direction == ScrollLeft && m_orientation == HorizontalScrollbar)) |
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step = -1; |
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else if ((direction == ScrollDown && m_orientation == VerticalScrollbar) || (direction == ScrollRight && m_orientation == HorizontalScrollbar)) |
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step = 1; |
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|
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if (granularity == ScrollByLine) |
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step *= m_lineStep; |
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else if (granularity == ScrollByPage) |
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step *= m_pageStep; |
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else if (granularity == ScrollByDocument) |
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step *= m_totalSize; |
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else if (granularity == ScrollByPixel) |
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step *= m_pixelStep; |
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|
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float newPos = m_currentPos + step * multiplier; |
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float maxPos = m_totalSize - m_visibleSize; |
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newPos = max(min(newPos, maxPos), 0.0f); |
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|
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if (newPos == m_currentPos) |
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return false; |
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|
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int oldValue = value(); |
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m_currentPos = newPos; |
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updateThumbPosition(); |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
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109 |
|
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
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110 |
if (value() != oldValue && client()) |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
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111 |
client()->valueChanged(this); |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
changeset
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112 |
|
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
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113 |
// return true even if the integer value did not change so that scroll event gets eaten |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
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114 |
return true; |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
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115 |
} |
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
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116 |
} |