c558fce8ad
Squashed commit of the following:
Clean-up some include path problems introduced with the previous set of changes.
app/include/graphics, apps/NxWidgets/UnitTests: Update include paths for file in new location.
apps/NxWidgets/nxwidgets and nxwm: Update include paths for file in new location.
apps/graphics/NxWidgets: Move nxwidgets and nxwm include/ directories to apps/include/graphics
459 lines
13 KiB
C++
459 lines
13 KiB
C++
/****************************************************************************
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* apps/graphics/NxWidgets/nxwidgets/src/clabel.cxx
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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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*
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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
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX, NxWidgets, nor the names of its contributors
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* me be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************
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*
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* Portions of this package derive from Woopsi (http://woopsi.org/) and
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* portions are original efforts. It is difficult to determine at this
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* point what parts are original efforts and which parts derive from Woopsi.
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* However, in any event, the work of Antony Dzeryn will be acknowledged
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* in most NxWidget files. Thanks Antony!
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*
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* Copyright (c) 2007-2011, Antony Dzeryn
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* 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 are met:
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*
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* * 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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* * 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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* * Neither the names "Woopsi", "Simian Zombie" nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Antony Dzeryn ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL Antony Dzeryn BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY 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 OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <nuttx/nx/nxglib.h>
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#include "graphics/nxwidgets/nxconfig.hxx"
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#include "graphics/nxwidgets/clabel.hxx"
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#include "graphics/nxwidgets/cgraphicsport.hxx"
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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/****************************************************************************
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* CLabel Method Implementations
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****************************************************************************/
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using namespace NXWidgets;
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/**
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* Constructor for a label containing a string.
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*
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* @param pWidgetControl The controlling widget for the display
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* @param x The x coordinate of the text box, relative to its parent.
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* @param y The y coordinate of the text box, relative to its parent.
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* @param width The width of the textbox.
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* @param height The height of the textbox.
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* @param text Pointer to a string to display in the textbox.
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* @param style The style that the button should use. If this is not
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* specified, the button will use the global default widget
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* style.
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*/
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CLabel::CLabel(CWidgetControl *pWidgetControl,
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nxgl_coord_t x, nxgl_coord_t y,
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nxgl_coord_t width, nxgl_coord_t height,
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const CNxString &text, CWidgetStyle *style)
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: CNxWidget(pWidgetControl, x, y, width, height, 0, style)
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{
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// Default is centered text
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m_hAlignment = TEXT_ALIGNMENT_HORIZ_CENTER;
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m_vAlignment = TEXT_ALIGNMENT_VERT_CENTER;
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// The border thickness is 1 pixel
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m_borderSize.top = 1;
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m_borderSize.right = 1;
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m_borderSize.bottom = 1;
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m_borderSize.left = 1;
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m_align.x = 0;
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m_align.y = 0;
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m_textChange = false;
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m_highlighted = false;
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setText(text);
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calculateTextPositionHorizontal();
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calculateTextPositionVertical();
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}
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/**
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* Set the horizontal alignment of text within the label.
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*
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* @param alignment The horizontal position of the text.
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*/
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void CLabel::setTextAlignmentHoriz(TextAlignmentHoriz alignment)
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{
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m_hAlignment = alignment;
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calculateTextPositionHorizontal();
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redraw();
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}
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/**
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* Set the vertical alignment of text within the label.
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*
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* @param alignment The vertical position of the text.
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*/
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void CLabel::setTextAlignmentVert(TextAlignmentVert alignment)
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{
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m_vAlignment = alignment;
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calculateTextPositionVertical();
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redraw();
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}
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/**
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* Set the text displayed in the label.
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*
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* @param text String to display.
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*/
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void CLabel::setText(const CNxString &text)
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{
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m_text = text;
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onTextChange();
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}
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/**
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* Append new text to the end of the current text displayed in the
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* label.
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*
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* @param text String to append.
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*/
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void CLabel::appendText(const CNxString &text)
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{
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m_text.append(text);
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onTextChange();
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}
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/**
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* Insert text at the specified index.
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*
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* @param text The text to insert.
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* @param index Index at which to insert the text.
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*/
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void CLabel::insertText(const CNxString &text, const int index)
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{
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m_text.insert(text, index);
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onTextChange();
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}
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/**
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* Control the highlight state.
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*
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* @param highlightOn True(1), the label will be highlighted
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*/
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void CLabel::highlight(bool highlightOn)
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{
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if (highlightOn != m_highlighted)
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{
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m_highlighted = highlightOn;
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redraw();
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}
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}
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/**
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* Insert the dimensions that this widget wants to have into the rect
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* passed in as a parameter. All coordinates are relative to the
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* widget's parent.
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*
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* @param rect Reference to a rect to populate with data.
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*/
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void CLabel::getPreferredDimensions(CRect &rect) const
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{
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nxgl_coord_t width;
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nxgl_coord_t height;
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if (!m_flags.borderless)
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{
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width = m_borderSize.left + m_borderSize.right;
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height = m_borderSize.top + m_borderSize.bottom;
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}
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else
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{
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width = 0;
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height = 0;
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}
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width += getFont()->getStringWidth(m_text);
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height += getFont()->getHeight();
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rect.setX(m_rect.getX());
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rect.setY(m_rect.getY());
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rect.setWidth(width);
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rect.setHeight(height);
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}
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/**
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* Sets the font.
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*
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* @param font A pointer to the font to use.
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*
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* NOTE: This font is not deleted when the widget is destroyed!
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*/
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void CLabel::setFont(CNxFont *font)
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{
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m_style.font = font;
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// Need to recalculate the text position as the font may have changed size
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calculateTextPositionHorizontal();
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calculateTextPositionVertical();
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redraw();
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}
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/**
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* Draw the area of this widget that falls within the clipping region.
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* Called by the redraw() function to draw all visible regions.
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* @param port The CGraphicsPort to draw to.
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*
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* @see redraw()
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*/
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void CLabel::drawContents(CGraphicsPort *port)
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{
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// Get the drawing area (excluding the border)
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CRect rect;
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getRect(rect);
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// Pick the text and background colors
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nxgl_mxpixel_t textColor;
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nxgl_mxpixel_t backColor;
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if (!isEnabled())
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{
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textColor = getDisabledTextColor();
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backColor = getBackgroundColor();
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}
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else if (m_highlighted)
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{
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textColor = getSelectedTextColor();
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backColor = getSelectedBackgroundColor();
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}
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else
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{
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textColor = getEnabledTextColor();
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backColor = getBackgroundColor();
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}
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// Draw the background (excluding the border)
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#ifndef CONFIG_NXWIDGETS_FLICKERFREE
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port->drawFilledRect(rect.getX(), rect.getY(),
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rect.getWidth(), rect.getHeight(), backColor);
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#endif
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// Get the X/Y position of the text within the Label
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struct nxgl_point_s pos;
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pos.x = rect.getX() + m_align.x;
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pos.y = rect.getY() + m_align.y;
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#ifdef CONFIG_NXWIDGETS_FLICKERFREE
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CNxFont* font = getFont();
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int height = font->getHeight();
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int width = font->getStringWidth(m_text);
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// Draw the background (excluding the border and the text area)
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// Left
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port->drawFilledRect(rect.getX(), rect.getY(),
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pos.x - rect.getX(), rect.getHeight(), backColor);
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// Right
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port->drawFilledRect(pos.x + width, rect.getY(),
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rect.getX2() - (pos.x + width) + 1,
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rect.getHeight(), backColor);
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// Top
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port->drawFilledRect(pos.x, rect.getY(), width, pos.y - rect.getY(),
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backColor);
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// Bottom
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port->drawFilledRect(pos.x, pos.y + height, width,
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rect.getY2() - (pos.y + height) + 1, backColor);
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#endif
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// Add the text using the selected color and background color
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port->drawText(&pos, &rect, getFont(), m_text, 0, m_text.getLength(),
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textColor, backColor);
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}
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/**
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* Draw the area of this widget that falls within the clipping region.
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* Called by the redraw() function to draw all visible regions.
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*
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* @param port The CGraphicsPort to draw to.
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* @see redraw()
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*/
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void CLabel::drawBorder(CGraphicsPort *port)
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{
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// Check if the widget indicates it should have an outline: That
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// (1) the outline is enabled and (2) that this is not just a text-only
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// redraw
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if (!isBorderless() && !isTextChange())
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{
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port->drawBevelledRect(getX(), getY(), getWidth(), getHeight(),
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getShadowEdgeColor(), getShineEdgeColor());
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}
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}
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/**
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* Resize the widget to the new dimensions.
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*
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* @param width The new width.
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* @param height The new height.
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*/
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void CLabel::onResize(nxgl_coord_t width, nxgl_coord_t height)
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{
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calculateTextPositionHorizontal();
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calculateTextPositionVertical();
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}
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/**
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* Calculate the vertical position of the string based on the font
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*
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* height and the alignment options.
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*/
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void CLabel::calculateTextPositionVertical(void)
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{
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CRect rect;
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getClientRect(rect);
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nxgl_coord_t height = rect.getHeight();
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switch (m_vAlignment)
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{
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case TEXT_ALIGNMENT_VERT_CENTER:
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m_align.y = (height - getFont()->getHeight()) >> 1;
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break;
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case TEXT_ALIGNMENT_VERT_TOP:
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m_align.y = 0;
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break;
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case TEXT_ALIGNMENT_VERT_BOTTOM:
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m_align.y = height - getFont()->getHeight();
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break;
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}
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}
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/**
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* Calculate the position of the string based on its length and the
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* alignment options.
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*/
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void CLabel::calculateTextPositionHorizontal(void)
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{
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CRect rect;
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getClientRect(rect);
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nxgl_coord_t width = rect.getWidth();
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switch (m_hAlignment)
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{
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case TEXT_ALIGNMENT_HORIZ_CENTER:
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m_align.x = (width - getFont()->getStringWidth(m_text)) >> 1;
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break;
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case TEXT_ALIGNMENT_HORIZ_LEFT:
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m_align.x = 0;
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break;
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case TEXT_ALIGNMENT_HORIZ_RIGHT:
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m_align.x = width - getFont()->getStringWidth(m_text);
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break;
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}
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}
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/**
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* Updates the GUI after the text has changed.
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*/
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void CLabel::onTextChange(void)
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{
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calculateTextPositionHorizontal();
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calculateTextPositionVertical();
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m_textChange = true;
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redraw();
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m_textChange = false;
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m_widgetEventHandlers->raiseValueChangeEvent();
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}
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