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