/**************************************************************************** * NxWidgets/libnxwidgets/include/cimage.cxx * * Copyright (C) 2012-2013 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include "nxconfig.hxx" #include "cgraphicsport.hxx" #include "ibitmap.hxx" #include "cbitmap.hxx" #include "cimage.hxx" /**************************************************************************** * Pre-Processor Definitions ****************************************************************************/ /**************************************************************************** * Method Implementations ****************************************************************************/ using namespace NXWidgets; /** * Constructor for a label containing a string. * * @param pWidgetControl The controlling widget for the display * @param x The x coordinate of the image box, relative to its parent. * @param y The y coordinate of the image box, relative to its parent. * @param width The width of the textbox. * @param height The height of the textbox. * @param bitmap The source bitmap image. * @param style The style that the widget should use. If this is not * specified, the button will use the global default widget * style. */ CImage::CImage(CWidgetControl *pWidgetControl, nxgl_coord_t x, nxgl_coord_t y, nxgl_coord_t width, nxgl_coord_t height, FAR IBitmap *bitmap, CWidgetStyle *style) : CNxWidget(pWidgetControl, x, y, width, height, 0, style) { // Save the IBitmap instance m_bitmap = bitmap; // Not highlighted m_highlighted = false; // Position the top/left corner of the bitmap in the top/left corner of the display m_origin.x = 0; m_origin.y = 0; } /** * 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 CImage::getPreferredDimensions(CRect &rect) const { if (!m_bitmap) { rect.setX(m_rect.getX()); rect.setY(m_rect.getY()); rect.setWidth(0); rect.setHeight(0); } else { nxgl_coord_t width = m_bitmap->getWidth(); nxgl_coord_t height = m_bitmap->getHeight(); if (!m_flags.borderless) { width += (m_borderSize.left + m_borderSize.right); height += (m_borderSize.top + m_borderSize.bottom); } rect.setX(m_rect.getX()); rect.setY(m_rect.getY()); rect.setWidth(width); rect.setHeight(height); } } /** * Draw the area of this widget that falls within the clipping region. * Called by the drawContents(port) and by classes that inherit from * CImage. * * @param port The CGraphicsPort to draw to. * @see redraw() */ void CImage::drawContents(CGraphicsPort *port, bool selected) { if (!m_bitmap) { // No image to draw return; } // Get the the drawable region CRect rect; getRect(rect); // Allocate a working buffer that will hold one row of the bitmap FAR nxwidget_pixel_t *buffer = new nxwidget_pixel_t[rect.getWidth()]; // Set up a simple bitmap structure to describe one row struct SBitmap bitmap; bitmap.bpp = m_bitmap->getBitsPerPixel(); bitmap.fmt = m_bitmap->getColorFormat(); bitmap.width = rect.getWidth(); bitmap.height = 1; bitmap.stride = (rect.getWidth() * m_bitmap->getBitsPerPixel()) >> 3; bitmap.data = buffer; // Select the correct colorization m_bitmap->setSelected(selected || m_highlighted); // This is the end row + 1 that we can write into nxgl_coord_t bottomRow = m_bitmap->getHeight() + m_origin.y; if (bottomRow > rect.getHeight()) { bottomRow = rect.getHeight(); } // Apply padding entire line buffer. FAR nxwidget_pixel_t *ptr = buffer; nxwidget_pixel_t backColor = getBackgroundColor(); for (int column = 0; column < rect.getWidth(); column++) { *ptr++ = backColor; } // This the starting row in the display image where we will begin drawing. nxgl_coord_t destRow = rect.getY(); // Draw any padded rows at the top of the widget before this for (int padRow = 0; padRow < m_origin.y; padRow++, destRow++) { // Put the padded row on the display if (isEnabled()) { port->drawBitmap(rect.getX(), destRow, rect.getWidth(), 1, &bitmap, 0, 0); } else { port->drawBitmapGreyScale(rect.getX(), destRow, rect.getWidth(), 1, &bitmap, 0, 0); } } // This is the number of rows that we can draw at the top of the display nxgl_coord_t nTopRows = bottomRow - m_origin.y; // Are we going to draw any rows at the top of the display? if (nTopRows > 0) { // This is the end column + 1 that we can write into nxgl_coord_t rightColumn = m_bitmap->getWidth() + m_origin.x; if (rightColumn > rect.getWidth()) { rightColumn = rect.getWidth(); } // This is the number of columns that we can draw on the left side of // the display at the offset m_origin.x. nxgl_coord_t nLeftPixels = rightColumn - m_origin.x; // This is the row number of the first row that we cannot draw into nxgl_coord_t lastTopRow = nTopRows + destRow; for (int srcRow = 0; destRow < lastTopRow; srcRow++, destRow++) { // Read the graphics data for the left hand side of this row and // place it in the row buffer at offset origin.x. if (!m_bitmap->getRun(0, srcRow, nLeftPixels, &buffer[m_origin.x])) { gvdbg("IBitmap::getRun failed at image row\n", srcRow); delete buffer; return; } // Replace any transparent pixels with the background color. // Then we can use the faster opaque drawBitmap() function. ptr = &buffer[m_origin.x]; for (int i = 0; i < nLeftPixels; i++, ptr++) { if (*ptr == CONFIG_NXWIDGETS_TRANSPARENT_COLOR) { *ptr = backColor; } } // And put these on the display if (isEnabled()) { port->drawBitmap(rect.getX(), destRow, rect.getWidth(), 1, &bitmap, 0, 0); } else { port->drawBitmapGreyScale(rect.getX(), destRow, rect.getWidth(), 1, &bitmap, 0, 0); } } } // Are we going to draw any rows at the bottom of the display? if (nTopRows < rect.getHeight()) { // Pad the entire row ptr = buffer; for (int column = 0; column < rect.getWidth(); column++) { *ptr++ = backColor; } // Now draw the rows from the offset position for (; destRow < rect.getHeight(); destRow++) { // Put the padded row on the display if (isEnabled()) { port->drawBitmap(rect.getX(), destRow, rect.getWidth(), 1, &bitmap, 0, 0); } else { port->drawBitmapGreyScale(rect.getX(), destRow, rect.getWidth(), 1, &bitmap, 0, 0); } } } delete buffer; } /** * 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 CImage::drawContents(CGraphicsPort *port) { drawContents(port, isClicked()); } /** * Draw the border of this widget. Called by the indirectly via * drawBoard(port) and also by classes that inherit from CImage. * * @param port The CGraphicsPort to draw to. * @see redraw() */ void CImage::drawBorder(CGraphicsPort *port, bool selected) { // Stop drawing if the widget indicates it should not have an outline if (isBorderless()) { return; } // Work out which colors to use nxgl_coord_t color1; nxgl_coord_t color2; if (selected) { // Bevelled into the screen color1 = getShadowEdgeColor(); color2 = getShineEdgeColor(); } else { // Bevelled out of the screen color1 = getShineEdgeColor(); color2 = getShadowEdgeColor(); } port->drawBevelledRect(getX(), getY(), getWidth(), getHeight(), color1, color2); } /** * Draw the border of this widget. Called by the redraw() function to draw * all visible regions. * * @param port The CGraphicsPort to draw to. * @see redraw() */ void CImage::drawBorder(CGraphicsPort *port) { drawBorder(port, isClicked()); } /** * Control the highlight state. * * @param highlightOn True(1), the image will be highlighted */ void CImage::highlight(bool highlightOn) { if (m_highlighted != highlightOn) { m_highlighted = highlightOn; redraw(); } } /** * Redraws the button. * * @param x The x coordinate of the click. * @param y The y coordinate of the click. */ void CImage::onClick(nxgl_coord_t x, nxgl_coord_t y) { redraw(); } /** * Raises an action. * * @param x The x coordinate of the mouse. * @param y The y coordinate of the mouse. */ void CImage::onPreRelease(nxgl_coord_t x, nxgl_coord_t y) { m_widgetEventHandlers->raiseActionEvent(); } /** * Redraws the image. * * @param x The x coordinate of the mouse. * @param y The y coordinate of the mouse. */ void CImage::onRelease(nxgl_coord_t x, nxgl_coord_t y) { redraw(); } /** * Redraws the image. * * @param x The x coordinate of the mouse. * @param y The y coordinate of the mouse. */ void CImage::onReleaseOutside(nxgl_coord_t x, nxgl_coord_t y) { redraw(); } /** * Set the horizontal position of the bitmap. Zero is the left edge * of the bitmap and values > 0 will move the bit map to the right. * This method is useful for horizontal scrolling a large bitmap * within a smaller window * * REVISIT: m_origin.x should be permitted to go negative. */ void CImage::setImageLeft(nxgl_coord_t column) { // Get the the drawable region CRect rect; getRect(rect); if (m_bitmap && column >= 0 && column < rect.getWidth()) { m_origin.x = column; } } /** * Align the image at the left of the widget region. * * NOTE: The CImage widget does not support any persistent alignment * attribute (at least not at the moment). As a result, this alignment * can be lost if the image is changed or if the widget is resized. */ void CImage::alignHorizontalCenter(void) { // Get the the drawable region CRect rect; getRect(rect); // Center the image setImageLeft((rect.getWidth() - m_bitmap->getWidth()) >> 1); } /** * Align the image at the left of the widget region. * * NOTE: The CImage widget does not support any persistent alignment * attribute (at least not at the moment). As a result, this alignment * can be lost if the image is changed or if the widget is resized. */ void CImage::alignHorizontalRight(void) { // Get the the drawable region CRect rect; getRect(rect); // Position the image at the right of the widget region setImageLeft(rect.getWidth() - m_bitmap->getWidth()); } /** * Set the vertical position of the bitmap. Zero is the top edge * of the bitmap and values >0 will move the bit map down. * This method is useful for vertical scrolling a large bitmap * within a smaller window * * REVISIT: m_origin.y should be permitted to go negative. */ void CImage::setImageTop(nxgl_coord_t row) { // Get the the drawable region CRect rect; getRect(rect); // Check the attempted Y position if (m_bitmap && row >= 0 && row < rect.getHeight()) { m_origin.y = row; } } /** * Align the image at the middle of the widget region. * * NOTE: The CImage widget does not support any persistent alignment * attribute (at least not at the moment). As a result, this alignment * can be lost if the image is changed or if the widget is resized. */ void CImage::alignVerticalCenter(void) { // Get the the drawable region CRect rect; getRect(rect); // Center the image setImageTop((rect.getHeight() - m_bitmap->getHeight()) >> 1); } /** * Align the image at the left of the widget region. * * NOTE: The CImage widget does not support any persistent alignment * attribute (at least not at the moment). As a result, this alignment * can be lost if the image is changed or if the widget is resized. */ void CImage::alignVerticalBottom(void) { // Get the the drawable region CRect rect; getRect(rect); // Position the image at the bottom of the widget region setImageTop(rect.getHeight() - m_bitmap->getHeight()); }