cocos2d/cocos/platform/CCGLViewProtocol.h

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#ifndef __CCGLVIEWPROTOCOL_H__

#define __CCGLVIEWPROTOCOL_H__

#include "base/ccTypes.h"

#include "base/CCEventTouch.h"

#include <vector>

enumclass ResolutionPolicy

{

/**

[1] EXACT_FIT 通过 stretch-to-fit（拉伸）来填满屏幕: 如果分辨率的宽度、高度和屏幕的分辨率不同，会拉长你的游戏视图来适应屏幕

[2] NO_BORDER 全屏无黑色边框: 如果分辨率式样的宽度、高度和屏幕的分辨率不同，你游戏视图的两个区域会将被削减。

[3] SHOW_ALL 带有黑色边框的全屏: 如果分辨率式样的宽度、高度和屏幕的分辨率不同，两个黑色边框将显示.

// The entire application is visible in the specified area without trying to preserve the original aspect ratio.

// Distortion can occur, and the application may appear stretched or compressed.

// 整个应用程序在指定区域中可见，而试图保持原始宽高比。

// 可能会发生扭曲，应用程序可能会拉伸或压缩。

EXACT_FIT,

// The entire application fills the specified area, without distortion but possibly with some cropping,

// while maintaining the original aspect ratio of the application.

// 整个应用程序填满指定区域，不扭曲，但可能进行一些裁切，同时保持应用程序的原始宽高比。

NO_BORDER,

// The entire application is visible in the specified area without distortion while maintaining the original

// aspect ratio of the application. Borders can appear on two sides of the application.

// 看到整个应用程序在指定区域不失真，同时保持应用程序的原始宽高比。应用程序的两边可能会显示边框。

SHOW_ALL,

// The application takes the height of the design resolution size and modifies the width of the internal

// canvas so that it fits the aspect ratio of the device

// no distortion will occur however you must make sure your application works on different

// aspect ratios

// 该应用程序采用高度来，内部画布的宽度根据设计分辨率大小变化的，使其适合设备的纵横比没有会变形，但是你必须确保你的应用程序适用于不同的纵横比

FIXED_HEIGHT,

// The application takes the width of the design resolution size and modifies the height of the internal

// canvas so that it fits the aspect ratio of the device

// no distortion will occur however you must make sure your application works on different

// aspect ratios

// 该应用程序采用宽度根据分辨率大小来设计，高度根据内部画布变化的，使其适合设备的纵横比没有会变形，但是你必须确保你的应用程序适用于不同的纵横比

FIXED_WIDTH,

UNKNOWN,

};

NS_CC_BEGIN

/**

* @addtogroup platform

* @{

classCC_DLL GLViewProtocol

{

public:

/**

* @js ctor

GLViewProtocol();

/**

* @js NA

* @lua NA

virtual ~GLViewProtocol();

/** Force destroying EGL view, subclass must implement this method. */

/**强制销毁EGL视图，子类必须实现此方法。*/

virtualvoid end() =0;

/** Get whether opengl render system is ready, subclass must implement this method. */

/** 获取OpenGL的渲染系统是否已准备好，子类必须实现此方法. */

virtualbool isOpenGLReady() =0;

/** Exchanges the front and back buffers, subclass must implement this method. */

/**交换前后缓冲区，子类必须实现此方法. */

virtualvoid swapBuffers() =0;

/** Open or close IME keyboard , subclass must implement this method. */

/** 打开或关闭输入法键盘，子类必须实现此方法. */

virtualvoid setIMEKeyboardState(bool open) =0;

/**

* Polls input events. Subclass must implement methods if platform

* does not provide event callbacks.

Polls 输入事件。如果平台不提供事件回调子类必须实现的方法

virtualvoid pollInputEvents();

/**

* Get the frame size of EGL view.

* In general, it returns the screen size since the EGL view is a fullscreen view.

* 获取EGL视图帧大小。

* 在一般情况下，它返回的屏幕尺寸,因为EGL的 view 是全屏的 view

virtualconstSize& getFrameSize()const;

/**

* Set the frame size of EGL view.

* 设置 EGL 视图帧大小.

virtualvoid setFrameSize(float width,float height);

/**

* Get the visible area size of opengl viewport.

* 获取 openGL的视图窗口的可见区域大小.

virtualSize getVisibleSize()const;

/**

* Get the visible origin point of opengl viewport.

* 获取 openGL的视图窗口可见源点

virtualVec2 getVisibleOrigin()const;

/**

* Get the visible rectangle of opengl viewport.

* 获取openGL 视图窗口的可见矩形

virtualRect getVisibleRect()const;

/**

* Set the design resolution size. 设置设计分辨率大小

* @param width Design resolution width. 分辨率宽度样式

* @param height Design resolution height.分辨率高度样式

* @param resolutionPolicy The resolution policy desired, you may choose: 你可以根据需要选择所需要的分辨率:

* [1] EXACT_FIT Fill screen by stretch-to-fit: if the design resolution ratio of width to height is different from the screen resolution ratio, your game view will be stretched.

* [2] NO_BORDER Full screen without black border: if the design resolution ratio of width to height is different from the screen resolution ratio, two areas of your game view will be cut.

* [3] SHOW_ALL Full screen with black border: if the design resolution ratio of width to height is different from the screen resolution ratio, two black borders will be shown.

[1] EXACT_FIT 通过 stretch-to-fit（拉伸）来填满屏幕: 如果分辨率的宽度、高度和屏幕的分辨率不同，会拉长你的游戏视图来适应屏幕

[2] NO_BORDER 全屏无黑色边框: 如果分辨率式样的宽度、高度和屏幕的分辨率不同，你游戏视图的两个区域会将被削减。

[3] SHOW_ALL 带有黑色边框的全屏: 如果分辨率式样的宽度、高度和屏幕的分辨率不同，两个黑色边框将显示.

virtualvoid setDesignResolutionSize(float width,float height,ResolutionPolicy resolutionPolicy);

/** Get design resolution size.

* Default resolution size is the same as 'getFrameSize'.

获取分辨率式样大小.

默认分辨率大小和 'getFrameSize' 是一样的.

virtualconstSize& getDesignResolutionSize()const;

/**

* Set opengl view port rectangle with points.

* 使用一些点设置opengl 视图窗口的矩形

virtualvoid setViewPortInPoints(float x ,float y ,float w ,float h);

/**

* Set Scissor rectangle with points.

* 使用一些点设置裁剪矩形

virtualvoid setScissorInPoints(float x ,float y ,float w ,float h);

/**

* Get whether GL_SCISSOR_TEST is enable

* 设置是否启用 GL_SCISSOR_TEST

virtualbool isScissorEnabled();

/**

* Get the current scissor rectangle

* 获得当前的裁剪矩形

virtualRect getScissorRect()const;

virtualvoid setViewName(conststd::string& viewname);

conststd::string& getViewName()const;

/**

Touch events are handled by default; if you want to customize your handlers, please override these functions:

默认情况下触摸事件的处理，如果你想自定义您的处理程序，请重写这些函数
*/

virtualvoid handleTouchesBegin(int num,intptr_t ids[],float xs[],float ys[]);

virtualvoid handleTouchesMove(int num,intptr_t ids[],float xs[],float ys[]);

virtualvoid handleTouchesEnd(int num,intptr_t ids[],float xs[],float ys[]);

virtualvoid handleTouchesCancel(int num,intptr_t ids[],float xs[],float ys[]);

/**

* Get the opengl view port rectangle.

* 获得 OpenGL 视图窗口.

constRect& getViewPortRect()const;

/**

* Get scale factor of the horizontal direction.

* 获得水平方向缩放比

float getScaleX()const;

/**

* Get scale factor of the vertical direction.

* 获得垂直方向缩放比

float getScaleY()const;

/** returns the current Resolution policy */

ResolutionPolicy getResolutionPolicy()const {return_resolutionPolicy; }

protected:

void updateDesignResolutionSize();

void handleTouchesOfEndOrCancel(EventTouch::EventCode eventCode,int num, intptr_t ids[],float xs[],float ys[]);

// real screen size 真实的屏幕尺寸

Size _screenSize;

// resolution size, it is the size appropriate for the app resources.

// 分辨率的大小，它适应应用程序资源大小

Size _designResolutionSize;

// the view port size

//视图窗口的大小

Rect _viewPortRect;

// the view name

std::string _viewName;

float _scaleX;

float _scaleY;

ResolutionPolicy _resolutionPolicy;

};

// end of platform group

/// @}

NS_CC_END

#endif /* __CCGLVIEWPROTOCOL_H__ */

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