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#pragma once
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#include <QAbstractScrollArea>
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#include <QVector>
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#include <QPoint>
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#include <QPixmap>
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#include "ZxRenderItem.h"
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#include "ZxSceneItem.h"
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#include "ZxRenderItemIterator.h"
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#include "IxRedoUndo.h"
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#include "iPlotBase_global.h"
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class QActionGroup;
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class QUndoCommand;
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class ZxToolState;
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class ZxTool;
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class QMenu;
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class QComboBox;
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class QPixmap;
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class QPushButton;
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class QPrinter;
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class ZxSelectionOutline
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{
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public:
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QPixmap pixmap;
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int xc;
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int yc;
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};
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// 图形视图(图元显示和操作)
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class I_PLOTBASE_EXPORT ZxRenderView
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: public QAbstractScrollArea
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, virtual public IxDynObj
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, virtual public IxRedoUndo
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{
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Q_OBJECT
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ZX_DECLARE_DYNAMIC
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public:
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ZxRenderView(QWidget* parent = 0);
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virtual ~ZxRenderView();
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enum ZoomMode
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{
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eZoomFree,
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eZoomFitWidth,
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eZoomFitHeight,
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eZoomFitWindow
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};
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public:
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// 强制显示隐藏滚动条
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void forceShowScrollBar(bool bHori, bool bVisible);
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// 获取图元树迭代器
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ZxRenderItemIterator getRenderTree() const;
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// 堆栈相关
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virtual QUndoStack* getUndoStack();
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virtual void pushCommand(QUndoCommand* cmd);
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// 场景
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virtual void setScene(ZxSceneItem* p, bool bOwnScene = false);
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virtual ZxSceneItem* getScene() const;
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// 获取当前工具正在操作视图
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static ZxRenderView* getCurrentToolView();
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// 获取(建议的)控制点尺寸
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float getHandleSize(); // mm
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// 获取(建议的)控制点尺寸, 并转到文档坐标(随着缩放率变化)
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float getHandleSizeSceneCoord(); // mm
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// 快照模式开关，快照模式下重绘速度快, 但只在显示区域发生变化时才刷新快照.
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virtual void setSnapshotMode(bool b);
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virtual bool isSnapshotMode() const;
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QPixmap getSnapshot(); //获取快照
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virtual void repaintSnapshot();//立即刷新快照, 在非快照模式下无效果.
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virtual void updateSnapshot();//刷新快照, 但不是立即刷新, 在非快照模式下无效果.
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// 是否显示纸张页面及边框
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void setPaperMode(bool b);
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public:
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// 准备右键菜单
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virtual void onPrepareContextMenu(QMenu* pMenu, const QPointF& pos);
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// 获取选择区域的轮廓(实际上可能是详图, 不一定就是线框轮廓)
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virtual ZxSelectionOutline getSelectionOutline(int nMouseX, int nMouseY, \
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const QColor overlapColor = QColor(0, 127, 255, 63), \
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ZxFilterFun filter = 0);
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// 从本视图坐标系转到文档坐标系
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QPointF mapToScene(const QPointF& pos) const;
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QRectF mapToScene(const QRectF& rect) const;
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QSizeF mapToScene(const QSizeF & sz) const;
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// 从文档坐标系转到本视图坐标系
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QPointF mapFromScene(const QPointF& pos) const;
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QRectF mapFromScene(const QRectF& rect) const;
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QSizeF mapFromScene(const QSizeF & sz) const;
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// 从本视图坐标系转到全局坐标系
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QPointF mapToGlobal(const QPointF& pos) const;
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QPoint mapToGlobal(const QPoint& pos) const;
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// 从全局坐标系转到本视图坐标系
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QPointF mapFromGlobal(const QPointF& pos) const;
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QPoint mapFromGlobal(const QPoint& pos) const;
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// 缩放模式
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virtual void setZoomMode(ZoomMode mode, bool reLayout = true);
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ZoomMode getZoomMode() const;
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// 获取缩放倍数
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float getZoomRatioX() const;
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float getZoomRatioY() const;
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float getZoomRatio() const;
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// 获取缩放模式或百分比, 以便用来显示给用户.
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QString getZoomString() const;
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// 缩放到指定区域
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virtual void zoomTo(const QRectF& rectSceneCoord);
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// 把场景的某点对应到视图的某点
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virtual void scrollScenePosToViewPos(const QPointF& ptScene, const QPointF& ptView);
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// 把场景的某点显示到视图中心
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virtual void scrollScenePosToViewCenter(const QPointF& ptScene);
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// 把矩形变为和视图一样的长宽比例
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virtual QRectF adjustRectFitViewAspect(const QRectF& rect);
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// 获取屏幕DPI
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static int getDpiX();
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static int getDpiY();
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// 获取屏幕每毫米的像素数
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static float getPpmmX();
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static float getPpmmY();
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// 还原鼠标光标.
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// 一般是箭头, 但也可能是其它, 所以不能用 setCursor(Qt::ArrowCursor);
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virtual void restoreCursor();
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signals:
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// 信号: 有图元被移出图件树
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void sigItemDetached(ZxRenderItem* pItem);
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// 信号：双击
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void sigLeftDoubleClick(const QPointF& pt);
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// 信号：为了PF同步新增的信号
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void sigZoomedX(float r, bool reLayout);
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void sigZoomedY(float r, bool reLayout);
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void sigMouseWheel(const QPointF& pt, int delta);
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void sigZoomStrChanged(const QString& s, bool reLayout = true);
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// 信号：缩放
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void sigZoomedIn();
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void sigZoomedOut();
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void sigZoomedRaw();
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public slots:
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// 设置缩放倍数(例如2.5倍)
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virtual void setZoomRatioX(float r, bool reLayout);
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virtual void setZoomRatioY(float r, bool reLayout);
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virtual void slotMouseWheel(const QPointF& pt, int delta);
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// 设置缩放模式或百分比.
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// @param s 输入"120"或"120%"均表示放大到1.2倍
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// @param reLayout 是否立即重新布局
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virtual void slotZoomStrChanged(const QString& s, bool reLayout);
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// 放大/缩小/初始
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virtual void zoomIn();
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virtual void zoomOut();
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virtual void zoomRaw();
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virtual void zoomInOnly();
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virtual void zoomOutOnly();
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// 处理保存
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virtual void slotSaveAsImg();
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// 处理打印动作
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virtual void slotPrint();
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virtual void slotPrintPreview();
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virtual void print(QPrinter *printer);
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virtual void printPreview(QPrinter *printer);
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// 相当于 viewport()->update(...)
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virtual void updateViewport();
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// 相当于 viewport()->update(...)
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virtual void slotUpdateViewport(const QRect&);
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// 相当于 viewport()->repaint(...)
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virtual void repaintViewport();
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private:
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void notifyItemDetached(ZxRenderItem* pItem);
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protected slots:
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virtual void slotZoomEditingFinished();
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virtual void slotZoomComboIndexChanged(const QString& text);
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void slotTheOwnedSceneDestroyed(QObject* p);
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public:
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// 画背景及纸张
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virtual void paintPaper(QPainter* painter);
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// 画工具、Policy、控制点、辅助线等前景
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// @note 打印和输出图片时不画这一层
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virtual void paintOverlay(QPainter* painter);
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// 画文档内容
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virtual void paintScene(QPainter* painter, const ZxPaintParam& param);
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// 用默认的ZxPaintParam来绘图
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virtual void paintScene(QPainter* painter);
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// 在指定画布上绘制图形(无前景和背景)
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// deviceRect: 设备坐标范围,坐标单位为像素，如果为空，则表示按照图形实际大小输出
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// expose: 文档坐标范围,如果为空表示输出完整图形
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virtual void paint(QPainter* painter, QRect deviceRect = QRect(), QRectF expose = QRectF(), bool isPreview = false);
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protected:
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virtual void paintEvent(QPaintEvent *);
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virtual void resizeEvent(QResizeEvent *);
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virtual void mousePressEvent(QMouseEvent *);
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virtual void mouseMoveEvent(QMouseEvent *);
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virtual void mouseReleaseEvent(QMouseEvent *);
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virtual void mouseDoubleClickEvent(QMouseEvent *);
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virtual void wheelEvent(QWheelEvent *);
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virtual void keyPressEvent(QKeyEvent *);
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virtual void keyReleaseEvent(QKeyEvent *);
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virtual void customContextMenuRequested(const QPoint &pos);
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virtual void enterEvent(QEvent *);
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virtual void leaveEvent(QEvent *);
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virtual void hideEvent(QHideEvent *);
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virtual void focusInEvent(QFocusEvent *);
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virtual void focusOutEvent(QFocusEvent *);
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virtual void closeEvent(QCloseEvent *);
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protected:
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virtual QSizeF getViewportSizePixel() const;
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// 见Qt文档, 滚动位置发生变化
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virtual void scrollContentsBy ( int dx, int dy );
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// 根据缩放模式计算出缩放率
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virtual void calcZoomRatio();
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// 计算转换矩阵
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static void calcMatrix(QMatrix & m, float scaleX, float scaleY, float x0, float y0);
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// 计算转换矩阵
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void calcMatrix(QMatrix & m, float x0, float y0);
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// 更新转换矩阵
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virtual void calcMatrix();
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private:
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void _setZoomRatio(float f, bool reLayout, bool sync, bool bX);
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// 以下函数在QWdiget里是非虚的, 不能重写.
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// 但他们又很容易和viewport里的混淆, 所以设为private的, 避免误用
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// 如果确实要用, 可使用限定符调用基类的: QAbstractScrollArea::update()
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// (已封闭) use viewport()->update(...) instead.
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void update();
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// (已封闭) use viewport()->repaint(...) instead.
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void repaint();
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// (已封闭) use viewport()->update(...) instead.
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void update(int x, int y, int w, int h);
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// (已封闭) use viewport()->update(...) instead.
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void update(const QRect&);
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// (已封闭) use viewport()->update(...) instead.
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void update(const QRegion&);
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// (已封闭) use viewport()->repaint(...) instead.
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void repaint(int x, int y, int w, int h);
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// (已封闭) use viewport()->repaint(...) instead.
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void repaint(const QRect &);
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// (已封闭) use viewport()->repaint(...) instead.
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void repaint(const QRegion &);
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// (已封闭) use paint(...) instead
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void render(QPaintDevice *target, const QPoint &targetOffset = QPoint(),
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const QRegion &sourceRegion = QRegion(),
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RenderFlags renderFlags = RenderFlags(DrawWindowBackground | DrawChildren));
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// (已封闭) use paint(...) instead
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void render(QPainter* painter, const QPoint &targetOffset = QPoint(),
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const QRegion &sourceRegion = QRegion(),
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RenderFlags renderFlags = RenderFlags(DrawWindowBackground | DrawChildren));
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// 打印或者打印预览
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virtual void print(QPrinter *printer, bool isPreview);
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public:
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// 相当于 viewport()->update(...)
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virtual void updateViewport(int x, int y, int w, int h);
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// 相当于 viewport()->update(...)
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virtual void updateViewport(const QRect&);
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// @see void updateViewport(const QRect&)
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virtual void updateViewport(const QRectF&);
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// 相当于 viewport()->update(...)
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virtual void updateViewport(const QRegion&);
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// 相当于 viewport()->repaint(...)
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virtual void repaintViewport(int x, int y, int w, int h);
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// 相当于 viewport()->repaint(...)
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virtual void repaintViewport(const QRect &);
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// 相当于 viewport()->repaint(...)
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virtual void repaintViewport(const QRegion &);
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// 文档发生改变
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virtual void onDocUpdate(const QRectF * pSceneRect);
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// 布局. 包括更新滚动条范围, 做页面布局, 计算矩阵等
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virtual void layoutViewport(QRectF * pSceneBounds = 0);
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// 获取窗口边距
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virtual void getMargins(float * top, float * left, float * bottom, float * right) const;
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// 设置窗口边距
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virtual void setMargins(float top, float left, float bottom, float right);
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// 获取文档坐标系下的窗口边距
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virtual void getMarginsSceneCoord(float * top, float * left, float * bottom, float * right) const;
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// 获取文档范围
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virtual QRectF getSceneBounds() const;
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// 获取加上缩进后的文档范围
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virtual QRectF getSceneBoundsWithMargins() const;
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// 获取当前缩放率下视口能显示的最大文档尺寸
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virtual QSizeF getViewportSizeMillimeter() const;
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// 获取当前可见的场景区域
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virtual QRectF getViewportRectSceneCoord() const;
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// 滚动位置
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virtual QPointF getScrollPos() const;
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virtual void setScrollPos(const QPointF& pos);
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virtual void setScrollPos(float x, float y);
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// 水平滚动位置
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virtual void setHorizontalScrollPos(float pos);
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virtual void setVerticalScrollPos(float pos);
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// 设置缩放下拉栏是否可见
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void setZoomComboVisible(bool b);
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// 不变性检测
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virtual void invariant() const;
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// 对齐方式.
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// 暂时只支持居中和不居中
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virtual void setAlignment(Qt::Alignment alignment);
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virtual Qt::Alignment getAlignment() const;
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#ifdef _SCAN_OLD_CODE_
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virtual void setSmartHorizontalScrollPos(bool b);
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bool isSmartHorizontalScrollPos() const;
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virtual void setSmartVerticalScrollPos(bool b);
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bool isSmartVerticalScrollPos() const;
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#endif
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public:
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// 获取视图中所有工具
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QVector<ZxTool*> getTools() const;
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// 活动工具
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virtual ZxTool* getActiveTool() const;
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virtual void setActiveTool(int index);
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virtual void setActiveTool(ZxTool* p);
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virtual void setActiveTool(const QString& sToolText);
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// 默认工具
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virtual ZxTool* getDefaultTool() const;
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virtual void setDefaultTool(int index);
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virtual void setDefaultTool(ZxTool* p);
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// 把工具加到视图中.
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// @ pTool 要添加的工具. 可以为0, 0将显示为分隔线.
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// 注: 视图将负责销毁工具
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int addTool(ZxTool* pTool);
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// 获取指定action, 触发action可激活工具
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QAction* getToolAction(int index) const;
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QAction* getToolAction(ZxTool* p) const;
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// 删除全部工具
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virtual void clearTools();
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// 活动视图
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bool isActiveView() const;
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bool activateView();
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// 当前视图被激活/被取消激活
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virtual void onActivated(QWidget* pOldActiveView);
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virtual void onDeactivated(QWidget* pNewActiveView);
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// 工具的状态和另一个视图同步(单次同步)
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void syncActiveToolWith(const ZxRenderView* pOther);
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// 从另一个视图中复制工具
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void copyToolsFrom(const ZxRenderView* pOther);
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protected:
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// void onSerialize(ZxSerializer* ser);
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// void onDeserialize(ZxSerializer* ser);
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bool checkAndDoLayout();
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virtual void onViewportParamChanged();
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virtual void onSelectionChanged(ZxSelection& selection);
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// 转换矩阵, 用作painter的 matrix
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QMatrix getMatrixDocToView() const;
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// 转换矩阵
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QMatrix getMatrixViewToDoc() const;
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virtual void onIdle();
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public:
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void setCursorKeeping(bool bKeeping);
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private:
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// scene
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// |<----------------------------------------->|
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// |==============================|<---------->|
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// min page
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void setHorizontalScrollInfo(float fMin, float fScene, float fView);
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void setVerticalScrollInfo(float fMin, float fScene, float fView);
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void prepareBackBuffer();
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private slots:
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void slotActivateTool();
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private:
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// 场景指针
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ZxSceneItem* m_pScene;
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// Action & Tool
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QVector<QAction*> m_vecToolActions;
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QVector<ZxTool*> m_vecTools;
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QActionGroup* m_pToolActionGroup;
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int m_nDefaultTool;
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int m_nActiveTool;
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// 用作painter的world matrix
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QMatrix* m_pMatrixDocToView;
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QMatrix* m_pMatrixViewToDoc;
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static float m_fCachedPpmmX;
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static float m_fCachedPpmmY;
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// 工具的状态, 同时只有一个工具激活, 所以没必要每个工具都记一份
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ZxToolState* m_pToolState;
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// 缩放
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QComboBox* m_pComboZoom;
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ZoomMode m_nZoomMode;
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float m_fZoomX;
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float m_fZoomY;
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float m_fMarginLeft;
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float m_fMarginTop;
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float m_fMarginRight;
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float m_fMarginBottom;
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float m_fScrollOriginX;
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float m_fScrollOriginY;
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QRectF m_rectLastBounds; // 用来检测是否需要重新布局
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QSizeF m_sizeLastViewport;
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QPixmap m_snapshot;
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QPixmap m_backBuffer;
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Qt::Alignment m_nAlignment;
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bool m_bSnapshotMode;
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bool m_bPaperMode;
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bool m_bNeedRepaintSnapshot;
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bool m_bInLayoutViewport;
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#ifdef _SCAN_OLD_CODE_
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bool m_bSmartHorizontalScrollPos : 1;
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bool m_bSmartVerticalScrollPos : 1;
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#endif
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bool m_bOwnScene;
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bool m_bPainting;
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bool m_bHover;
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bool m_bNoBackBuffer; // 不使用后台缓存 (此变量不影响Qt自带的防闪烁机制)
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private:
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// 临时变量
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bool m_bKeepingCursor; //对于Polygon生成过程中，不能恢复为箭头
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bool m_bActive;//临时
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friend class ZxTool;
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friend class ZxSceneItem;
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friend class ZxCompoundTool;
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};
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