#include "UICanvasItemBase.h"
#include "Utils.h"
#include <QPainter>
#include <QGraphicsSceneMouseEvent>
#include <QDebug>
#include <QGraphicsView>
#include <QGraphicsScene>
#include <QVector2D>
#include <QVector3D>
#include <cmath>
#include <math.h>
#include <QJsonObject>
#include "NDNodeBase.h"
#include "NDAttributeBase.h"
#include "NDRealAttribute.h"
#include "NDIntAttribute.h"
#include "RALLBlockSignal.h"
#include "UICanvasItemManager.h"
#include "UICanvasView.h"
QImage UICanvasItemBase::m_closeIcon;
QImage UICanvasItemBase::m_resizeIcon;
QImage UICanvasItemBase::m_rotateIcon;
UICanvasItemBase::UICanvasItemBase(QGraphicsItem* parentItem)
:QGraphicsItem(parentItem)
,m_cPenColor(255, 0, 0)
,m_cBrushColor(200, 100, 100)
{
this->setFlag(QGraphicsItem::ItemIsSelectable, true);
this->setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
initIcon();
// 初始化基本属性
initNodeBase();
// 获取中心位置
m_size = QSize(100, 100);
QPointF centerPos = g_currentCanvasManager->getCurrentCanvasView()->getCenterPos();
this->setPos(centerPos);
}
UICanvasItemBase::~UICanvasItemBase()
{
}
void UICanvasItemBase::setItemResizeable(bool resizeable)
{
m_isResizeable = resizeable;
}
NDNodeBase* UICanvasItemBase::getCurrentNode(void) const
{
return m_pNode;
}
void UICanvasItemBase::setItemResizeRatio(bool resizeRation, qreal rationValue)
{
m_isRatioScale = resizeRation;
m_ratioValue = rationValue;
}
QRectF UICanvasItemBase::boundingRect() const
{
QRectF rectF = getCustomRect();
if (!this->isSelected())
return rectF;
rectF.adjust(-m_nInterval, -m_nInterval, m_nInterval, m_nInterval);
rectF.adjust(-m_nEllipseWidth, -m_nEllipseWidth, m_nEllipseWidth, m_nEllipseWidth);
return rectF;
}
void UICanvasItemBase::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
painter->setRenderHint(QPainter::Antialiasing, true);
painter->setRenderHint(QPainter::SmoothPixmapTransform, true);
painter->setRenderHint(QPainter::TextAntialiasing, true);
// 自定义绘制
customPaint(painter, option, widget);
if (!this->isSelected())
return;
// 设置画笔
QPen pen;
pen.setWidth(m_nPenWidth);
pen.setColor(m_cPenColor);
pen.setStyle(Qt::DashLine);
painter->setPen(pen);
QRectF itemRect = this->getCustomRect();
// 绘制轮廓线
QRectF outLintRect = itemRect.adjusted(-m_nInterval, -m_nInterval, m_nInterval, m_nInterval);
painter->drawRect(outLintRect);
painter->setPen(Qt::NoPen);
painter->setBrush(m_cBrushColor);
// 绘制控制点
painter->drawEllipse(outLintRect.topRight(), m_nEllipseWidth, m_nEllipseWidth);
if (!m_closePixmap.isNull())
painter->drawPixmap(QRect(outLintRect.topRight().x() - m_nEllipseWidth / 2, \
outLintRect.topRight().y() - m_nEllipseWidth / 2, \
m_nEllipseWidth, m_nEllipseWidth), m_closePixmap);
painter->drawEllipse(outLintRect.bottomLeft(), m_nEllipseWidth, m_nEllipseWidth);
if (!m_rotatePixmap.isNull())
painter->drawPixmap(QRect(outLintRect.bottomLeft().x() - m_nEllipseWidth / 2, \
outLintRect.bottomLeft().y() - m_nEllipseWidth / 2, \
m_nEllipseWidth, m_nEllipseWidth), m_rotatePixmap);
if (m_isResizeable)
{
painter->drawEllipse(outLintRect.bottomRight(), m_nEllipseWidth, m_nEllipseWidth);
if (!m_resizePixmap.isNull())
painter->drawPixmap(QRect(outLintRect.bottomRight().x() - m_nEllipseWidth / 2, \
outLintRect.bottomRight().y() - m_nEllipseWidth / 2, \
m_nEllipseWidth, m_nEllipseWidth), m_resizePixmap);
}
}
QPainterPath UICanvasItemBase::shape() const
{
QPainterPath path;
path.addRect(boundingRect());
return path;
}
void UICanvasItemBase::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
QRectF itemRect = this->getCustomRect();
QRectF outLintRect = itemRect.adjusted(-m_nInterval, -m_nInterval, m_nInterval, m_nInterval);
// 获取当前模式
QPointF pos = event->pos();
QPointF scenePos = event->scenePos();
if (itemRect.contains(pos))
m_itemOper = t_move;
else if (g_utilTool->getDistance(pos, outLintRect.topRight()) <= m_nEllipseWidth)
{
g_currentCanvasManager->deleteCanvasItem(m_pNode);
return;
}
else if (g_utilTool->getDistance(pos, outLintRect.bottomLeft()) <= m_nEllipseWidth)
m_itemOper = t_rotate;
else if (g_utilTool->getDistance(pos, outLintRect.bottomRight()) <= m_nEllipseWidth)
m_itemOper = t_resize;
// 保存当前的一些信息
m_pos = pos;
m_pressedPos = scenePos;
m_startPos = this->pos();
m_startRotate = m_rotate;
m_startSize = m_size;
return QGraphicsItem::mousePressEvent(event);
}
void UICanvasItemBase::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
// 获取场景坐标和本地坐标
QPointF scenePos = event->scenePos();
QPointF pos = event->pos();
if (m_itemOper == t_move)
{
// 处理移动
mouseMoveMoveOperator(scenePos, pos);
}
else if (m_itemOper == t_resize)
{
// 处理更改大小
mouseMoveResizeOperator(scenePos, pos);
}
else if (m_itemOper == t_rotate)
{
// 处理旋转
mouseMoveRotateOperator(scenePos, pos);
}
return QGraphicsItem::mouseMoveEvent(event);
}
void UICanvasItemBase::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
// 获取场景坐标和本地坐标
QPointF scenePos = event->scenePos();
QPointF pos = event->pos();
if (m_itemOper == t_move)
{
// 处理移动
mouseReleaseMoveOperator(scenePos, pos);
}
else if (m_itemOper == t_resize)
{
// 处理更改大小
mouseReleaseResizeOperator(scenePos, pos);
}
else if (m_itemOper == t_rotate)
{
// 处理旋转
mouseReleaseRotateOperator(scenePos, pos);
}
m_itemOper = t_none;
return QGraphicsItem::mouseReleaseEvent(event);
}
QVariant UICanvasItemBase::itemChange(QGraphicsItem::GraphicsItemChange change, const QVariant &value)
{
if (change == QGraphicsItem::ItemSelectedChange)
prepareGeometryChange();
else if (change == QGraphicsItem::ItemPositionHasChanged)
{
updateAttribute();
}
return QGraphicsItem::itemChange(change, value);
}
void UICanvasItemBase::mouseMoveMoveOperator(const QPointF& scenePos, const QPointF& loacalPos)
{
qreal xInterval = scenePos.x() - m_pressedPos.x();
qreal yInterval = scenePos.y() - m_pressedPos.y();
this->setPos(m_startPos + QPointF(xInterval, yInterval));
this->update();
}
void UICanvasItemBase::mouseMoveResizeOperator(const QPointF& scenePos, const QPointF& loacalPos)
{
if (!m_isResizeable)
return;
qreal ratio = m_ratioValue;
qreal itemWidth = abs(loacalPos.x()) * 2 - m_nInterval - m_nEllipseWidth;
qreal itemHeight = abs(loacalPos.y()) * 2 - m_nInterval - m_nEllipseWidth;
if (m_isRatioScale)
itemHeight = itemWidth * 1.0 / ratio;
// 设置图片的最小大小为10
if (itemWidth < 10 || itemHeight < 10)
return;
m_size = QSize(itemWidth, itemHeight);
m_pWidthAttribute->setValue(m_size.width());
m_pHeightAttribute->setValue(m_size.height());
this->update();
}
void UICanvasItemBase::mouseMoveRotateOperator(const QPointF& scenePos, const QPointF& loacalPos)
{
// 获取并设置为单位向量
QVector2D startVec(m_pos.x() - 0, m_pos.y() - 0);
startVec.normalize();
QVector2D endVec(loacalPos.x() - 0, loacalPos.y() - 0);
endVec.normalize();
// 单位向量点乘，计算角度
qreal dotValue = QVector2D::dotProduct(startVec, endVec);
if (dotValue > 1.0)
d
基于Qt QGraphicsView的简易画图软件.zip （577个子文件） 
UICanvasItemBase.cpp 18KB MainWindow.cpp 16KB UICanvasItemManager.cpp 15KB CustomDialog.cpp 12KB SQLCore.cpp 12KB UICustomColorWidget.cpp 11KB UICanvasOperators.cpp 11KB PythonWrapCore.cpp 9KB CustomTestWidget.cpp 8KB UICustomColorCircle.cpp 8KB UICanvasView.cpp 7KB UICanvasAudioItem.cpp 7KB UICanvasTextItem.cpp 7KB UINodeTreeViewModel.cpp 7KB GlobalHotKeyManager.cpp 6KB UISchemeManagerWidget.cpp 6KB AudioPlayerThread.cpp 6KB AudioDecodec.cpp 6KB UICustomColorSliderItem.cpp 5KB UICanvasEllipseItem.cpp 4KB UICanvasRectItem.cpp 4KB UICustomGroupControl.cpp 4KB CanvasSchemeManager.cpp 4KB UINodeTreeView.cpp 4KB UICanvasPathItem.cpp 4KB NDAttributeBase.cpp 4KB NDNodeBase.cpp 4KB UndoCmdCore.cpp 3KB UICanvasScene.cpp 3KB UICustomDoubleControl.cpp 3KB UICustomOrientationControl.cpp 3KB UICustomColorControl.cpp 3KB UICustomSwitchWidget.cpp 3KB UICustomIntControl.cpp 3KB UICustomPostionWidget.cpp 3KB UICustomCombineControlBase.cpp 3KB UICanvasImageItem.cpp 3KB UICustomLineEdit.cpp 3KB UICustomImageViewer.cpp 3KB UICustomLeftItemWidget.cpp 3KB UIAttrTextControl.cpp 3KB UINodeAttrControl.cpp 3KB UINodeItem.cpp 3KB UICustomColorViewWidget.cpp 2KB UISchemeManagerDialog.cpp 2KB ItemAttributeChangedCmd.cpp 2KB UICustomCustomColorOperator.cpp 2KB UICustomColorSlider.cpp 2KB UINodeTreeDelegate.cpp 2KB CustomStyleConfig.cpp 2KB NDTextNode.cpp 2KB UICustomPostionControl.cpp 2KB UICustomLeftWidget.cpp 2KB UICustomComboBoxControl.cpp 2KB NDAttributeGroup.cpp 2KB UIAttrFloatControl.cpp 2KB main.cpp 1KB UIAttrIntControl.cpp 1KB UICustomLeftTabsControl.cpp 1KB UICustomLineEditControl.cpp 1KB UINodeTreeWidget.cpp 1KB UIAttrColorControl.cpp 1KB AudioPlayer.cpp 1KB UIAttrBoolControl.cpp 1KB UINodeSortFilterProxyModel.cpp 1KB ItemDeleteCmd.cpp 1KB UICustomSwitchControl.cpp 939B ItemCreateCmd.cpp 921B UICustonColorDialog.cpp 876B NDStringAttribute.cpp 867B NDAttributeData.cpp 861B ItemPasteCmd.cpp 762B ItemChangeNameCmd.cpp 746B GlobalHotKeyFilter.cpp 679B UIAttributWidget.cpp 670B UICustomTextEditTagControl.cpp 641B Utils.cpp 585B CustomWidget.cpp 578B UICustomTimeEditControl.cpp 557B NDPostionAttribute.cpp 541B UICustomDateEditControl.cpp 528B GlobalHotKeyInfo.cpp 522B UICustomTextEdit.cpp 520B NDRealAttribute.cpp 519B UICustomFontComboBoxControl.cpp 496B NDIntAttribute.cpp 485B NDNodeManager.cpp 445B UICustomDoubleSpinBox.cpp 426B UICustomIntSpinBox.cpp 393B UIAboutMeDialog.cpp 333B UICustomComboBox.cpp 306B UICustomDateEdit.cpp 277B NDColorAttribute.cpp 256B RALLBlockSignal.cpp 216B NDBoolAttribute.cpp 213B UICustomCalendarWidget.cpp 191B CustomMainWindow.cpp 162B UICustomTimeEdit.cpp 155B pythonwrap.cpp 54B AudioData.cpp 24B共 577 条
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资源评论
zsk05142024-04-23资源很好用，有较大的参考价值，资源不错，支持一下。- 春季旭日2023-10-30资源很实用，内容详细，值得借鉴的内容很多，感谢分享。
- mountianfire1232024-09-04资源很实用，内容详细，值得借鉴的内容很多，感谢分享。
我慢慢地也过来了
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