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Diffstat (limited to 'NxWidgets/libnxwidgets/src/cbuttonarray.cxx')
-rw-r--r-- | NxWidgets/libnxwidgets/src/cbuttonarray.cxx | 608 |
1 files changed, 608 insertions, 0 deletions
diff --git a/NxWidgets/libnxwidgets/src/cbuttonarray.cxx b/NxWidgets/libnxwidgets/src/cbuttonarray.cxx new file mode 100644 index 000000000..263a16ce4 --- /dev/null +++ b/NxWidgets/libnxwidgets/src/cbuttonarray.cxx @@ -0,0 +1,608 @@ +/**************************************************************************** + * NxWidgets/libnxwidgets/include/cbuttonarray.cxx + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <stdint.h> +#include <stdbool.h> + +#include <nuttx/nx/nxglib.h> + +#include "cbuttonarray.hxx" +#include "cgraphicsport.hxx" +#include "cwidgetstyle.hxx" + +/**************************************************************************** + * Pre-Processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * CButtonArray Method Implementations + ****************************************************************************/ + +using namespace NXWidgets; + +/** + * Constructor for an array of buttons. + * + * @param pWidgetControl The widget control for the display. + * @param x The x coordinate of the button array, relative to its parent. + * @param y The y coordinate of the button array, relative to its parent. + * @param buttonColumns The number of buttons in one row of the button array + * @param buttonRows The number of buttons in one column of the button array + * @param buttonWidth The width of one button + * @param buttonHeight The height of one button + * @param style The style that the button should use. If this is not + * specified, the button will use the global default widget + * style. + */ + +CButtonArray::CButtonArray(CWidgetControl *pWidgetControl, + nxgl_coord_t x, nxgl_coord_t y, + uint8_t buttonColumns, uint8_t buttonRows, + nxgl_coord_t buttonWidth, nxgl_coord_t buttonHeight, + CWidgetStyle *style) +: CNxWidget(pWidgetControl, x, y, + buttonColumns * buttonWidth + 2, buttonRows * buttonHeight + 2, + 0, style) +{ + // Save configuration + + m_buttonRows = buttonRows; + m_buttonColumns = buttonColumns; + m_buttonWidth = buttonWidth; + m_buttonHeight = buttonHeight; + + // Make sure the the positional data is valid. + + m_clickX = x; + m_clickY = y; + m_cursorColumn = 0; + m_cursorRow = 0; + + // Default behavior is to redraw the entire button array + + m_redrawButton = false; + + // No hightlighted buttons + + m_cursorOn = false; + m_cursorChange = false; + + // At present, There is no border on the array itself + + m_flags.borderless = true; + + // Make sure that the full size of the text array is allocated + + m_buttonText = new CNxString[m_buttonRows * m_buttonColumns]; +} + +/** + * CButtonArray Destructor. + */ + +CButtonArray::~CButtonArray(void) +{ + // Delete the array of CNxString instances + + delete [] m_buttonText; +} + +/** + * Returns the string shown in the label. + * + * @param column The column index of the button of interest +* @param row The row index of the button of interest + * @return The label's text. + */ + +const CNxString &CButtonArray::getText(int column, int row) const +{ + return m_buttonText[row * m_buttonColumns + column]; +} + +/** + * Set the text displayed in the label. + * + * @param column The column index of the button to set + * @param row The row index of the button to set + * @param text String to display. + */ + +void CButtonArray::setText(int column, int row, const CNxString &text) +{ + m_buttonText[row * m_buttonColumns + column] = text; + onTextChange(); +} + +/** + * Return the position of the last clicked button (0,0 will be returned + * the no button has every been clicked). The button at this position + * is currently clicked then, in addition, return true. + * + * @param column The location to return the column index of the button + * of interest + * @param row The location to return the row index of the button of + * interest + * @return True if a button in the array is clicked + */ + +bool CButtonArray::isButtonClicked(int &column, int &row) const +{ + // Return the last clicked position + + column = (m_clickX - getX()) / m_buttonWidth; + + // Calculate and return the button row index + + row = (m_clickY - getY()) / m_buttonHeight; + + // Return true if the button is currently clicked + + return isClicked(); +} + +/** + * Check if this specific button in the array is clicked + * + * @param column The column of the button to check. + * @param row The row of the button to check. + * @return True if this button is clicked + */ + +bool CButtonArray::isThisButtonClicked(int column, int row) const +{ + // The upper left X/Y position of the button at these indices + + nxgl_coord_t x = getX() + column * m_buttonWidth; + nxgl_coord_t y = getY() + row * m_buttonHeight; + + // Was the last click on this button? + + if ((m_clickX >= x && m_clickX < x + m_buttonWidth) && + (m_clickY >= y && m_clickY < y + m_buttonHeight)) + { + // Yes.. return true if the button is clicked + + return isClicked(); + } + else + { + // No.. then it can't be clicked + + return false; + } +} + +/** + * Control the cursor state. + * + * @param cursorOn True(1), the current cursor position will be highlighted + */ + +void CButtonArray::cursor(bool cursorOn) +{ + if (cursorOn != m_cursorOn) + { + // Set the state cursor state + + m_cursorOn = cursorOn; + + // Update only the effected button + + m_cursorChange = true; + redraw(); + m_cursorChange = false; + } +} + +/** + * Return the current cursor position (button indices) and an indication + * if the button at the cursor is currently hightlighted. + * + * @param column The location to return the column index of the button + * of interest + * @param row The location to return the row index of the button of + * interest + * @return True if the cursor is enabled and the button is highlighted + */ + +bool CButtonArray::getCursorPosition(int &column, int &row) const +{ + column = m_cursorColumn; + row = m_cursorRow; + return m_cursorOn; +} + +/** + * Set the cursor position (button indices). Note that the cursor + * does not have to be enabled to set the position. + * + * @param column The column index of the button of interest + * @param row The row index of the button of interest + * @return True if the cursor position is valid + */ + +bool CButtonArray::setCursorPosition(int column, int row) +{ + // Verify that the cursor position is within range + + if ((unsigned)column < m_buttonColumns && (unsigned)row < m_buttonRows) + { + // Verify that the now position is different from the old position + + if (column != m_cursorColumn || row != m_cursorRow) + { + m_cursorChange = true; + + // Is the cursor on now? + + bool redrawCursor = m_cursorOn; + if (redrawCursor) + { + // Yes.. clear the old cursor highlight + + m_cursorOn = false; + redraw(); + } + + // Set the new cursor position + + m_cursorColumn = column; + m_cursorRow = row; + + // Do we need to turn the cursor back on? + + if (redrawCursor) + { + // Yes.. Set the new cursor hightlight + + m_cursorOn = true; + redraw(); + } + + m_cursorChange = false; + } + + return true; + } + + return false; +} + +/** + * Check if this specific button in the array is at the cursor position + * and highlighted. + * + * @param column The column of the button to check. + * @param row The row of the button to check. + * @return True if this button is at the cursor postion and highlighted. + */ + +bool CButtonArray::isCursorPosition(int column, int row) const +{ + if (column == m_cursorColumn && row == m_cursorRow) + { + return m_cursorOn; + } + + return false; +} + +/** + * Insert the dimensions that this widget wants to have into the rect + * passed in as a parameter. All coordinates are relative to the + * widget's parent. + * + * @param rect Reference to a rect to populate with data. + */ + +void CButtonArray::getPreferredDimensions(CRect &rect) const +{ + return getRect(rect); +} + +/** + * Sets the font. + * + * @param font A pointer to the font to use. + */ + +void CButtonArray::setFont(CNxFont *font) +{ + m_style.font = font; + redraw(); +} + +/** + * Draw the area of this widget that falls within the clipping region. + * Called by the redraw() function to draw all visible regions. + * + * @param port The CGraphicsPort to draw to. + * @see redraw() + */ + +void CButtonArray::drawContents(CGraphicsPort *port) +{ + // Do we draw just the clicked/unclicked button? + + if (m_redrawButton) + { + int column; + int row; + + // Just one. Get the row/column indices from the last click + + (void)posToButton(m_clickX, m_clickY, column, row); + + // And draw that button + + drawButton(port, column, row, isClicked()); + } + + // Do we just draw the hightlighted button? + + else if (m_cursorChange) + { + // Do nothing if the highlighted button is also the clicked button + + if (!isThisButtonClicked(m_cursorColumn, m_cursorRow)) + { + drawButton(port, m_cursorColumn, m_cursorRow, false); + } + } + + // Draw all buttons + + else + { + // Visit each column + + for (int column = 0; column < m_buttonColumns; column++) + { + // Visit each row + + for (int row = 0; row < m_buttonRows; row++) + { + // Draw each button + + drawButton(port, column, row, isThisButtonClicked(column, row)); + } + } + } +} + +/** + * Draw the area of this widget that falls within the clipping region. + * Called by the redraw() function to draw all visible regions. + * + * @param port The CGraphicsPort to draw to. + * @see redraw() + */ + +void CButtonArray::drawBorder(CGraphicsPort *port) +{ + // This doesn't do anything anymore +} + +/** + * Redraw only one button + * + * @param port The CGraphicsPort to draw to. + * @param column The button column index + * @param row The button row index + * @param useClicked Draw the button using the 'clicked' button style, + * regardless of the actual button state. + * @see onClick() and onRelease() + */ + +void CButtonArray::drawButton(CGraphicsPort *port, int column, int row, bool useClicked) +{ + // The X/Y position of the button + + nxgl_coord_t x = getX() + column * m_buttonWidth; + nxgl_coord_t y = getY() + row * m_buttonHeight; + + // Determine which colors to use + + nxwidget_pixel_t borderColor1; + nxwidget_pixel_t borderColor2; + nxwidget_pixel_t backColor; + nxwidget_pixel_t textColor; + + // Pick the background and test colors. Should we use the 'clicked' backgound style? + + if (useClicked || isCursorPosition(column, row)) + { + // "Selected" text color on unique "Selected" background color + + backColor = getSelectedBackgroundColor(); + textColor = getSelectedTextColor(); + } + else + { + // Normal background color and "Enabled" text color + + backColor = getBackgroundColor(); + textColor = getEnabledTextColor(); + } + + // Pick the border colors. Should we use the 'clicked' button style? + + if (useClicked) + { + // Yes.. Bevelled into the screen + + borderColor1 = getShadowEdgeColor(); + borderColor2 = getShineEdgeColor(); + } + else + { + // No.. Bevelled out of the screen + + borderColor1 = getShineEdgeColor(); + borderColor2 = getShadowEdgeColor(); + } + + // Use a special text color if the widget is not enabled + + if (!isEnabled()) + { + textColor = getDisabledTextColor(); + } + + // Draw the background + + port->drawFilledRect(x, y, m_buttonWidth, m_buttonHeight, backColor); + + // Draw the button outline + + port->drawBevelledRect(x, y, m_buttonWidth, m_buttonHeight, borderColor1, borderColor2); + + // Get the text for this button + + CNxString *text = &m_buttonText[row * m_buttonColumns + column]; + + // Get the text drawing region + + CRect rect; + rect.setX(x + 1); + rect.setY(y + 1); + rect.setWidth(m_buttonWidth - 2); + rect.setHeight(m_buttonHeight - 2); + + // Get the centered text alignment + + nxgl_coord_t alignY = (m_buttonHeight - getFont()->getHeight() - 2) >> 1; + nxgl_coord_t alignX = (m_buttonWidth - getFont()->getStringWidth(*text) - 2) >> 1; + + // Get the text display position + + struct nxgl_point_s pos; + pos.x = x + alignX; + pos.y = y + alignY; + + // And draw the button text + + port->drawText(&pos, &rect, getFont(), *text, 0, text->getLength(), textColor); +} + +/** + * Redraws the button. + * + * @param x The x coordinate of the click. + * @param y The y coordinate of the click. + */ + +void CButtonArray::onClick(nxgl_coord_t x, nxgl_coord_t y) +{ + // Click X,Y is in raw window coordinates + + m_clickX = x; + m_clickY = y; + + // Redraw only the button that was clicked + + m_redrawButton = true; + redraw(); + m_redrawButton = false; +} + +/** + * Raises an action event and redraws the button. + * + * @param x The x coordinate of the mouse. + * @param y The y coordinate of the mouse. + */ + +void CButtonArray::onRelease(nxgl_coord_t x, nxgl_coord_t y) +{ + m_widgetEventHandlers->raiseActionEvent(); + + // Redraw only the button that was released + + m_redrawButton = true; + redraw(); + m_redrawButton = false; +} + +/** + * Redraws the button. + * + * @param x The x coordinate of the mouse. + * @param y The y coordinate of the mouse. + */ + +void CButtonArray::onReleaseOutside(nxgl_coord_t x, nxgl_coord_t y) +{ + redraw(); +} + +/** + * Convert an X/Y position to a button column/row index + * + * @param x The x position + * @param y The y position + * @param column The location to return the column index of the button + * of interest + * @param row The location to return the row index of the button of + * interest + * @return false is the position is invalid + */ + +bool CButtonArray::posToButton(nxgl_coord_t x, nxgl_coord_t y, int &column, int &row) +{ + // Get the row/column indices matching the x/y position + + column = (x - getX()) / m_buttonWidth; + row = (y - getY()) / m_buttonHeight; + return ((unsigned)column < m_buttonColumns && (unsigned)row < m_buttonRows); +} + +/** + * Updates the GUI after the text has changed. + */ + +void CButtonArray::onTextChange(void) +{ + redraw(); + m_widgetEventHandlers->raiseValueChangeEvent(); +} + |