ZFProtocolZFUITextView.h

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#ifndef _ZFI_ZFProtocolZFUITextView_h_
#define _ZFI_ZFProtocolZFUITextView_h_
 
#include "ZFCore/ZFProtocol.h"
#include "ZFUIKit/ZFUITextView.h"
ZF_NAMESPACE_GLOBAL_BEGIN

ZFPROTOCOL_INTERFACE_BEGIN(ZFLIB_ZFUIKit, ZFUITextView)
public:
    virtual void *nativeTextViewCreate(
            ZF_IN ZFUITextView *textView
            , ZF_OUT zfbool &nativeImplViewRequireVirtualIndex
            ) zfpurevirtual;
    virtual void nativeTextViewDestroy(
            ZF_IN ZFUITextView *textView
            , ZF_IN void *nativeTextView
            ) zfpurevirtual;
 
    // ============================================================
    // properties
public:
    virtual void text(
            ZF_IN ZFUITextView *textView
            , ZF_IN const zfstring &text
            ) zfpurevirtual;
    virtual void textAppearance(
            ZF_IN ZFUITextView *textView
            , ZF_IN ZFUITextAppearance const &textAppearance
            ) zfpurevirtual;
    virtual void textAlign(
            ZF_IN ZFUITextView *textView
            , ZF_IN ZFUIAlignFlags const &textAlign
            ) zfpurevirtual;
    virtual void textColor(
            ZF_IN ZFUITextView *textView
            , ZF_IN ZFUIColor const &textColor
            ) zfpurevirtual;
    virtual void textSize(
            ZF_IN ZFUITextView *textView
            , ZF_IN zffloat textSize
            ) zfpurevirtual;
    virtual void textSizeAutoMin(
            ZF_IN ZFUITextView *textView
            , ZF_IN zffloat textSizeAutoMin
            ) zfpurevirtual;
    virtual void textSizeAutoMax(
            ZF_IN ZFUITextView *textView
            , ZF_IN zffloat textSizeAutoMax
            ) zfpurevirtual;
    virtual void singleLine(
            ZF_IN ZFUITextView *textView
            , ZF_IN zfbool singleLine
            ) zfpurevirtual;
    virtual void textTruncateMode(
            ZF_IN ZFUITextView *textView
            , ZF_IN ZFUITextTruncateMode const &textTruncateMode
            ) zfpurevirtual;
 
    // ============================================================
    // layout
public:
    virtual ZFUISize measureNativeTextView(
            ZF_IN ZFUITextView *textView
            , ZF_IN const ZFUISize &sizeHint
            , ZF_IN zffloat textSize
            ) zfpurevirtual;

    virtual zffloat textSizeCurrent(ZF_IN ZFUITextView *textView) zfpurevirtual;

    virtual void layoutNativeTextView(
            ZF_IN ZFUITextView *textView
            , ZF_IN const ZFUISize &viewSize
            ) zfpurevirtual;
 
    // ============================================================
    // util method
public:
    zffloat calcTextSizeAuto(
            ZF_IN ZFUITextView *textView
            , ZF_IN const ZFUISize &sizeHint
            ) {
        zffloat curTextSize = textView->textSize();
        ZFUISize curSize = this->measureNativeTextView(textView, sizeHint, ZFUISizeApplyScale(curTextSize, textView->UIScaleFixed()));
 
        if(textView->textSizeAutoMax() > 0) {
            while(curTextSize < textView->textSizeAutoMax()
                    && ((sizeHint.width <= 0 || curSize.width < sizeHint.width)
                        && (sizeHint.height <= 0 || curSize.height < sizeHint.height))
                        ) {
                ++curTextSize;
                curSize = this->measureNativeTextView(textView, sizeHint, ZFUISizeApplyScale(curTextSize, textView->UIScaleFixed()));
            }
        }
 
        if(textView->textSizeAutoMin() > 0) {
            while(curTextSize > textView->textSizeAutoMin()
                    && ((sizeHint.width > 0 && curSize.width > sizeHint.width)
                        || (sizeHint.height > 0 && curSize.height > sizeHint.height))
                        ) {
                --curTextSize;
                curSize = this->measureNativeTextView(textView, sizeHint, ZFUISizeApplyScale(curTextSize, textView->UIScaleFixed()));
            }
        }
 
        return ZFUISizeApplyScale(curTextSize, textView->UIScaleFixed());
    }
ZFPROTOCOL_INTERFACE_END(ZFUITextView)
 
ZF_NAMESPACE_GLOBAL_END
#endif // #ifndef _ZFI_ZFProtocolZFUITextView_h_