diff options
author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-03-22 21:22:59 +0000 |
---|---|---|
committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-03-22 21:22:59 +0000 |
commit | 4dedf494c242b2c4b52707441eefe2a36fbacf0f (patch) | |
tree | 36728130c995053f18637c019829f492f0c3b3fe /NxWidgets/libnxwidgets/include/iscrollable.hxx | |
parent | af2319a52f4b11df952a5a1060c76cc0cdff0b98 (diff) | |
download | nuttx-4dedf494c242b2c4b52707441eefe2a36fbacf0f.tar.gz nuttx-4dedf494c242b2c4b52707441eefe2a36fbacf0f.tar.bz2 nuttx-4dedf494c242b2c4b52707441eefe2a36fbacf0f.zip |
First check-in of NxWidgets
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4505 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'NxWidgets/libnxwidgets/include/iscrollable.hxx')
-rw-r--r-- | NxWidgets/libnxwidgets/include/iscrollable.hxx | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/NxWidgets/libnxwidgets/include/iscrollable.hxx b/NxWidgets/libnxwidgets/include/iscrollable.hxx new file mode 100644 index 000000000..21a69e487 --- /dev/null +++ b/NxWidgets/libnxwidgets/include/iscrollable.hxx @@ -0,0 +1,208 @@ +/**************************************************************************** + * NxWidgets/libnxwidgets/include/iscrollable.hxx + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX, NxWidgets, nor the names of its contributors + * me be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + **************************************************************************** + * + * Portions of this package derive from Woopsi (http://woopsi.org/) and + * portions are original efforts. It is difficult to determine at this + * point what parts are original efforts and which parts derive from Woopsi. + * However, in any event, the work of Antony Dzeryn will be acknowledged + * in most NxWidget files. Thanks Antony! + * + * Copyright (c) 2007-2011, Antony Dzeryn + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the names "Woopsi", "Simian Zombie" nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY Antony Dzeryn ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Antony Dzeryn BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +#ifndef __INCLUDE_ISCROLLABLE_HXX +#define __INCLUDE_ISCROLLABLE_HXX + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <stdint.h> +#include <stdbool.h> + +#include <nuttx/nx/nxglib.h> + +/**************************************************************************** + * Pre-Processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Implementation Classes + ****************************************************************************/ + +#if defined(__cplusplus) + +namespace NXWidgets +{ + /** + * Abstract class defining basic functionality of scrolling widgets. + * Scrolling regions are modelled as a virtual "canvas", or rectangular + * region, with height/width dimensions and x/y coordinates. + */ + + class IScrollable + { + public: + /** + * Gets the x coordinate of the virtual canvas. + * + * @return The x coordinate of the virtual canvas. + */ + + virtual const int32_t getCanvasX(void) const = 0; + + /** + * Gets the y coordinate of the virtual canvas. + * + * @return The y coordinate of the virtual canvas. + */ + + virtual const int32_t getCanvasY(void) const = 0; + + /** + * Gets the width of the virtual canvas. + * + * @return The width of the virtual canvas. + */ + + virtual const int32_t getCanvasWidth(void) const = 0; + + /** + * Gets the height of the virtual canvas. + * + * @return The height of the virtual canvas. + */ + + virtual const int32_t getCanvasHeight(void) const = 0; + + /** + * Scrolls the virtual canvas by the specified amounts. + * + * @param dx Distance to scroll horizontally. + * @param dy Distance to scroll vertically. + */ + + virtual void scroll(int32_t dx, int32_t dy) = 0; + + /** + * Repositions the virtual canvas to the specified coordinates. + * + * @param x New x coordinate of the virtual canvas. + * @param y New y coordinate of the virtual canvas. + */ + + virtual void jump(int32_t x, int32_t y) = 0; + + /** + * Returns true if vertical scrolling is allowed. + * + * @return True if vertical scrolling is allowed. + */ + + virtual bool allowsVerticalScroll(void) const = 0; + + /** + * Returns true if horizontal scrolling is allowed. + * + * @return True if horizontal scrolling is allowed. + */ + + virtual bool allowsHorizontalScroll(void) const = 0; + + /** + * Set whether or not horizontal scrolling is allowed. + * + * @param allow True to allow horizontal scrolling; false to deny it. + */ + + virtual void setAllowsVerticalScroll(bool allow) = 0; + + /** + * Set whether or not horizontal scrolling is allowed. + * + * @param allow True to allow horizontal scrolling; false to deny it. + */ + + virtual void setAllowsHorizontalScroll(bool allow) = 0; + + /** + * Sets the width of the virtual canvas. + * + * @param width The width of the virtual canvas. + */ + + virtual void setCanvasWidth(const int32_t width) = 0; + + /** + * Sets the height of the virtual canvas. + * + * @param height The height of the virtual canvas. + */ + + virtual void setCanvasHeight(const int32_t height) = 0; + }; +} + +#endif // __cplusplus + +#endif // __INCLUDE_ISCROLLABLE_HXX + |