/**************************************************************************** * NxWidgets/libnxwidgets/include/cbgwindow.hxx * * Copyright (C) 2012, 2015 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. * ****************************************************************************/ #ifndef __INCLUDE_CBGWINDOW_HXX #define __INCLUDE_CBGWINDOW_HXX /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include "nxconfig.hxx" #include "ccallback.hxx" #include "inxwindow.hxx" /**************************************************************************** * Pre-Processor Definitions ****************************************************************************/ /**************************************************************************** * Implementation Classes ****************************************************************************/ #if defined(__cplusplus) namespace NXWidgets { class INxWindow; struct SBitmap; /** * This class defines operations on a the NX background window. * There are three instances that represent an NX window from the * perspective of NXWidgets. * * - There is one widget control instance per NX window, * - One CCallback instance per window, * - One window instance. * * There a various kinds of of window instances, but each inherits * (1) CCallback and dispatches the Windows callbacks and (2) INxWindow * that describes the common window behavior. */ class CBgWindow : protected CCallback, public INxWindow { private: NXHANDLE m_hNxServer; /**< Handle to the NX server. */ NXWINDOW m_hWindow; /**< Handle to the NX background window */ CWidgetControl *m_widgetControl; /**< The controlling widget for the window */ public: /** * Constructor. Obtains the background window from server and wraps * the window as CBgWindow. Creates an uninitialized instance of the * CBgWindow object. The open() method must be called to initialize * the instance. * * The general steps to create any window include: * 1) Create a dumb CWigetControl instance * 2) Pass the dumb CWidgetControl instance to the window constructor * that inherits from INxWindow. * 3) The window constructor call CWidgetControl methods to "smarten" * the CWidgetControl instance with window-specific knowledge. * 4) Call the open() method on the window to display the window. * 5) After that, the fully smartend CWidgetControl instance can * be used to generate additional widgets. * 6) After that, the fully smartened CWidgetControl instance can * be used to generate additional widgets by passing it to the * widget constructor * * @param hNxServer Handle to the NX server. * @param widgetControl Controlling widget for this window. */ CBgWindow(NXHANDLE hNxServer, CWidgetControl *widgetControl); /** * Destructor. Returns the background window to the server. */ virtual ~CBgWindow(void); /** * Creates a the new window. Window creation is separate from * object instantiation so that failures can be reported. * * @return True if the window was successfully created. */ bool open(void); /** * Each implementation of INxWindow must provide a method to recover * the contained CWidgetControl instance. * * @return The contained CWidgetControl instance */ CWidgetControl *getWidgetControl(void) const; /** * Request the position and size information of the window. The values * will be returned asynchronously through the client callback method. * The GetPosition() method may than be called to obtain the positional * data as provided by the callback. * * @return True on success, false on any failure. */ bool requestPosition(void); /** * Get the position of the window (as reported by the NX callback). NOTE: * The background window is always positioned at {0,0} * * @return The position. */ bool getPosition(FAR struct nxgl_point_s *pPos); /** * Get the size of the window (as reported by the NX callback). NOTE: * The size of the background window is always the entire display. * * @return The size. */ bool getSize(FAR struct nxgl_size_s *pSize); /** * Set the position and size of the window. * * @param pPos The new position of the window. * @return True on success, false on any failure. */ bool setPosition(FAR const struct nxgl_point_s *pPos); /** * Set the size of the selected window. NOTE: The size of the * background window is always the entire display and cannot be * changed. * * @param pSize The new size of the window. * @return True on success, false on any failure. */ bool setSize(FAR const struct nxgl_size_s *pSize); /** * Bring the window to the top of the display. NOTE: The background * window cannot be raised. * * @return True on success, false on any failure. */ bool raise(void); /** * Lower the window to the bottom of the display. NOTE: The background * window is always at the bottom of the window hierarchy. * * @return True on success, false on any failure. */ bool lower(void); /** * Each window implementation also inherits from CCallback. CCallback, * by default, forwards NX keyboard input to the various widgets residing * in the window. But NxTerm is a different usage model; In this case, * keyboard input needs to be directed to the NxTerm character driver. * This method can be used to enable (or disable) redirection of NX * keyboard input from the window widgets to the NxTerm * * @param handle. The NXTERM handle. If non-NULL, NX keyboard * input will be directed to the NxTerm driver using this * handle; If NULL (the default), NX keyboard input will be * directed to the widgets within the window. */ #ifdef CONFIG_NXTERM_NXKBDIN inline void redirectNxTerm(NXTERM handle) { setNxTerm(handle); } #endif /** * Set an individual pixel in the window with the specified color. * * @param pPos The location of the pixel to be filled. * @param color The color to use in the fill. * * @return True on success; false on failure. */ bool setPixel(FAR const struct nxgl_point_s *pPos, nxgl_mxpixel_t color); /** * Fill the specified rectangle in the window with the specified color. * * @param pRect The location to be filled. * @param color The color to use in the fill. * * @return True on success; false on failure. */ bool fill(FAR const struct nxgl_rect_s *pRect, nxgl_mxpixel_t color); /** * Get the raw contents of graphic memory within a rectangular region. NOTE: * Since raw graphic memory is returned, the returned memory content may be * the memory of windows above this one and may not necessarily belong to * this window unless you assure that this is the top window. * * @param rect The location to be copied * @param dest - The describes the destination bitmap to receive the * graphics data. */ void getRectangle(FAR const struct nxgl_rect_s *rect, struct SBitmap *dest); /** * Fill the specified trapezoidal region in the window with the specified * color. * * @param pClip Clipping rectangle relative to window (may be null). * @param pTrap The trapezoidal region to be filled. * @param color The color to use in the fill. * * @return True on success; false on failure. */ bool fillTrapezoid(FAR const struct nxgl_rect_s *pClip, FAR const struct nxgl_trapezoid_s *pTrap, nxgl_mxpixel_t color); /** * Fill the specified line in the window with the specified color. * * @param vector - Describes the line to be drawn * @param width - The width of the line * @param color - The color to use to fill the line * @param caps - Draw a circular cap on the ends of the line to support * better line joins * * @return True on success; false on failure. */ bool drawLine(FAR struct nxgl_vector_s *vector, nxgl_coord_t width, nxgl_mxpixel_t color, enum ELineCaps caps); /** * Draw a filled circle at the specified position, size, and color. * * @param center The window-relative coordinates of the circle center. * @param radius The radius of the rectangle in pixels. * @param color The color of the rectangle. */ bool drawFilledCircle(struct nxgl_point_s *center, nxgl_coord_t radius, nxgl_mxpixel_t color); /** * Move a rectangular region within the window. * * @param pRect Describes the rectangular region to move. * @param pOffset The offset to move the region. * * @return True on success; false on failure. */ bool move(FAR const struct nxgl_rect_s *pRect, FAR const struct nxgl_point_s *pOffset); /** * Copy a rectangular region of a larger image into the rectangle in the * specified window. * * @param pDest Describes the rectangular on the display that will receive * the bitmap. * @param pSrc The start of the source image. * @param pOrigin the pOrigin of the upper, left-most corner of the full * bitmap. Both pDest and pOrigin are in window coordinates, however, * pOrigin may lie outside of the display. * @param stride The width of the full source image in bytes. * * @return True on success; false on failure. */ bool bitmap(FAR const struct nxgl_rect_s *pDest, FAR const void *pSrc, FAR const struct nxgl_point_s *pOrigin, unsigned int stride); }; } #endif // __cplusplus #endif // __INCLUDE_CBGWINDOW_HXX