Add button in modinfo image preview to use preview plugin dialog

- Disabled if no compatible preview is found
- Now renders an image for unsupported formats instructing the user

3 files changed, 49 insertions, 6 deletions

diff --git a/src/modinfodialog.ui b/src/modinfodialog.ui
index ba2db799..13a245f1 100644
--- a/src/modinfodialog.ui
+++ b/src/modinfodialog.ui
@@ -268,6 +268,13 @@
                <number>0</number>

               </property>

               <item>

+               <widget class="QPushButton" name="previewPluginButton">

+                <property name="text">

+                 <string>Open with Preview Plugin</string>

+                </property>

+               </widget>

+              </item>

+              <item>

                <widget class="QToolButton" name="imagesExplore">

                 <property name="text">

                  <string>Open in Explorer</string>

diff --git a/src/modinfodialogimages.cpp b/src/modinfodialogimages.cpp
index c5b04538..48b3bb3b 100644
--- a/src/modinfodialogimages.cpp
+++ b/src/modinfodialogimages.cpp
@@ -53,6 +53,8 @@ ImagesTab::ImagesTab(ModInfoDialogTabContext cx) :
   ui->tabImagesSplitter->setStretchFactor(0, 0);
   ui->tabImagesSplitter->setStretchFactor(1, 1);
 
+  ui->previewPluginButton->setEnabled(false);
+
   ui->imagesThumbnails->setTab(this);
 
   ui->imagesScrollerVBar->setTab(this);
@@ -65,6 +67,7 @@ ImagesTab::ImagesTab(ModInfoDialogTabContext cx) :
 
   connect(ui->imagesExplore, &QAbstractButton::clicked, [&]{ onExplore(); });
   connect(ui->imagesShowDDS, &QCheckBox::toggled, [&]{ onShowDDS(); });
+  connect(ui->previewPluginButton, &QAbstractButton::clicked, [&] { onPreviewButton(); });
 
   ui->imagesShowDDS->setEnabled(m_ddsAvailable);
 
@@ -251,13 +254,34 @@ void ImagesTab::select(std::size_t i, Visibility v)
 
     ui->imagesPath->setText(QDir::toNativeSeparators(f->path()));
     ui->imagesExplore->setEnabled(true);
+    if (plugin().previewGenerator().previewSupported(QString::fromStdWString(std::filesystem::path(f->path().toStdWString()).extension().wstring()).remove(0,1)))
+      ui->previewPluginButton->setEnabled(true);
+    else
+      ui->previewPluginButton->setEnabled(false);
     ui->imagesSize->setText(dimensionString(f->original().size()));
 
-    m_image->setImage(f->original());
+    if (f->original().isNull()) {
+      m_image->clear();
+
+      QImage image(300, 100, QImage::Format_RGBA64);
+      QPainter paint;
+      paint.begin(&image);
+      paint.fillRect(0, 0, 300, 100, QBrush(QColor(0, 0, 0, 255)));
+      paint.setPen(m_theme.textColor);
+      paint.setFont(m_theme.font);
+      paint.drawImage(QPoint(150-16, 50-20-16), QImage(":/MO/gui/warning"));
+      const auto flags = Qt::AlignHCenter | Qt::AlignVCenter | Qt::TextWordWrap;
+      paint.drawText(0, 46, 300, 54, flags, "This image format is not supported by Qt, but the preview plugin may be able to display it. Use the button above.");
+      paint.end();
+
+      m_image->setImage(image);
+    } else
+      m_image->setImage(f->original());
     ensureVisible(i, v);
   } else {
     ui->imagesPath->clear();
     ui->imagesExplore->setEnabled(false);
+    ui->previewPluginButton->setEnabled(false);
     ui->imagesSize->clear();
     m_image->clear();
   }
@@ -560,6 +584,11 @@ void ImagesTab::onShowDDS()
   }
 }
 
+void ImagesTab::onPreviewButton()
+{
+  core().previewFileWithAlternatives(parentWidget(), m_files.selectedFile()->path());
+}
+
 void ImagesTab::onFilterChanged()
 {
   update();
@@ -958,13 +987,17 @@ void File::load(const Geometry& geo)
   ensureOriginalLoaded();
 
   if (m_failed) {
-    return;
-  }
+    QImage warning(":/MO/gui/warning");
+    const auto scaledSize = geo.scaledImageSize(warning.size());
 
-  const auto scaledSize = geo.scaledImageSize(m_original.size());
+    m_thumbnail = warning.scaled(
+      scaledSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
+  } else {
+    const auto scaledSize = geo.scaledImageSize(m_original.size());
 
-  m_thumbnail = m_original.scaled(
-    scaledSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
+    m_thumbnail = m_original.scaled(
+      scaledSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
+  }
 }
 
 
diff --git a/src/modinfodialogimages.h b/src/modinfodialogimages.h
index 8d9b965b..5717b8b9 100644
--- a/src/modinfodialogimages.h
+++ b/src/modinfodialogimages.h
@@ -4,6 +4,8 @@
 #include "modinfodialogtab.h"
 #include "filterwidget.h"
 #include <QScrollBar>
+#include "plugincontainer.h"
+#include "organizercore.h"
 
 class ImagesTab;
 
@@ -359,6 +361,7 @@ private:
   void showTooltip(QHelpEvent* e);
   void onExplore();
   void onShowDDS();
+  void onPreviewButton();
   void onFilterChanged();
 
   void select(std::size_t i, Visibility v=Visibility::Full);