新增截图预览

2025-12-14 21:02:04 +08:00 · 2022-03-13 20:27:03 +08:00
parent 904cc3cb1c
commit 8d40a0598e
9 changed files with 321 additions and 49 deletions
--- a/gui/spkimgviewer.cpp
+++ b/gui/spkimgviewer.cpp
@@ -0,0 +1,120 @@
+
+#include "spktitlebar.h"
+#include "spkimgviewer.h"
+#include "spkui_general.h"
+#include <QDebug>
+#include <QFocusEvent>
+#include <QGuiApplication>
+#include <QScreen>
+
+SpkImgViewer::SpkImgViewer(QWidget *parent) :
+  SpkWindow(parent),
+  mIconLoading(QIcon(":/icons/loading-icon.svg").pixmap({ 72, 72 }))
+{
+  mImgIndict = new QLabel;
+  mImgIndict->setText("%1/%2");
+  mBtnPrev = new QPushButton;
+  mBtnPrev->setText("<");
+  mBtnNext = new QPushButton;
+  mBtnNext->setText(">");
+
+  auto titleBar = GetTitleBar();
+  titleBar->SetUseIcon(false);
+  titleBar->SetTitle(tr("Image Preview"));
+  titleBar->SetOperationButton(SpkTitleBar::OperationButton::Close);
+
+  auto lay = titleBar->GetUserSpace();
+  lay->setAlignment(Qt::AlignVCenter);
+  lay->addStretch();
+  lay->addWidget(mBtnPrev);
+  lay->addWidget(mImgIndict);
+  lay->addWidget(mBtnNext);
+  lay->addStretch();
+
+  mImgArea = new QScrollArea;
+  mImgArea->setWidgetResizable(true);
+  mImgArea->setContentsMargins(10, 10, 10, 10);
+
+  mImgShow = new ImgView;
+
+  mImgArea->setWidget(mImgShow);
+
+  auto w = new QWidget;
+  auto l = new QHBoxLayout;
+  l->setContentsMargins(10, 10, 10, 10);
+  l->addWidget(mImgArea);
+  w->setLayout(l);
+  SetCentralWidget(w);
+
+  connect(mBtnPrev, &QPushButton::clicked,
+          [&](){ if(mCurrentImg > 0) { SwitchToImage(--mCurrentImg); } });
+  connect(mBtnNext, &QPushButton::clicked,
+          [&](){ if(mCurrentImg < mTotalImg) { SwitchToImage(++mCurrentImg); } });
+}
+
+void SpkImgViewer::ShowWithImage(int idx)
+{
+  SwitchToImage(idx);
+  show();
+}
+
+void SpkImgViewer::Clear()
+{
+  mImgMap.clear();
+  mImgShow->SetPixmap(nullptr);
+  mCurrentImg = 1;
+}
+
+void SpkImgViewer::SetPixmap(int idx, QPixmap *img)
+{
+  mImgMap[idx] = img;
+  if(mCurrentImg == idx)
+  {
+    mImgShow->SetPixmap(img);
+  }
+  ResizeToFitImageSize(img->size());
+}
+
+void SpkImgViewer::SwitchToImage(int idx)
+{
+  auto img = mImgMap.value(idx, nullptr);
+  mCurrentImg = idx;
+  mImgShow->SetPixmap(img ? img : &mIconLoading);
+  if(img)
+    ResizeToFitImageSize(img->size());
+  if(idx == 1)
+  {
+    mBtnPrev->setEnabled(false);
+    mBtnNext->setEnabled(true);
+  }
+  else if(idx == mTotalImg)
+  {
+    mBtnPrev->setEnabled(true);
+    mBtnNext->setEnabled(false);
+  }
+  else
+  {
+    mBtnPrev->setEnabled(true);
+    mBtnNext->setEnabled(true);
+  }
+  mImgIndict->setText(QString("%1/%2").arg(mCurrentImg).arg(mTotalImg));
+}
+
+bool SpkImgViewer::event(QEvent *e)
+{
+  if(e->type() == QEvent::WindowDeactivate)
+    close();
+  return SpkWindow::event(e);
+}
+
+void SpkImgViewer::ResizeToFitImageSize(QSize s)
+{
+  auto targetSize = s;
+  targetSize.rheight() += SpkTitleBar::Height;
+  targetSize = s.grownBy(QMargins(10, 10, 10, 10));
+  targetSize = targetSize.boundedTo(SpkUi::PrimaryScreenSize * 0.8);
+  resize(targetSize);
+  targetSize /= 2;
+  auto targetPos = SpkUi::PrimaryScreenSize / 2 - targetSize;
+  move(targetPos.width(), targetPos.height());
+}