From 6ed82866b07414e91dfe0c47ee5f580bfd4fe479 Mon Sep 17 00:00:00 2001
From: Tannin <devnull@localhost>
Date: Tue, 14 Jan 2014 21:16:36 +0100
Subject: - moved code for file previews to plugins

---
 src/previewgenerator.cpp | 76 +++++++-----------------------------------------
 1 file changed, 10 insertions(+), 66 deletions(-)

(limited to 'src/previewgenerator.cpp')

diff --git a/src/previewgenerator.cpp b/src/previewgenerator.cpp
index 5b0a44d8..764d016d 100644
--- a/src/previewgenerator.cpp
+++ b/src/previewgenerator.cpp
@@ -22,90 +22,34 @@ along with Mod Organizer.  If not, see <http://www.gnu.org/licenses/>.
 #include <QLabel>
 #include <QImageReader>
 #include <QTextEdit>
-#include <QGLPixelBuffer>
 #include <QDesktopWidget>
 #include <utility.h>
 
 PreviewGenerator::PreviewGenerator()
 {
-  // set up image reader to be used for all image types qt (the current installation) supports
-  auto imageReader = std::bind(&PreviewGenerator::genImagePreview, this, std::placeholders::_1);
-
-  foreach (const QByteArray &fileType, QImageReader::supportedImageFormats()) {
-    m_PreviewGenerators[QString(fileType).toLower()] = imageReader;
-  }
-
-  m_PreviewGenerators["txt"]
-    = std::bind(&PreviewGenerator::genTxtPreview, this, std::placeholders::_1);
-
-  m_PreviewGenerators["dds"]
-    = std::bind(&PreviewGenerator::genDDSPreview, this, std::placeholders::_1);
 
   QDesktopWidget desk;
   m_MaxSize = desk.screenGeometry().size() * 0.8;
 }
 
-bool PreviewGenerator::previewSupported(const QString &fileExtension) const
+void PreviewGenerator::registerPlugin(MOBase::IPluginPreview *plugin)
 {
-  return m_PreviewGenerators.find(fileExtension.toLower()) != m_PreviewGenerators.end();
-}
-
-QWidget *PreviewGenerator::genPreview(const QString &fileName) const
-{
-  auto iter = m_PreviewGenerators.find(QFileInfo(fileName).completeSuffix().toLower());
-  if (iter != m_PreviewGenerators.end()) {
-    return iter->second(fileName);
-  } else {
-    return nullptr;
+  foreach (const QString &extension, plugin->supportedExtensions()) {
+    m_PreviewPlugins.insert(std::make_pair(extension, plugin));
   }
 }
 
-QWidget *PreviewGenerator::genImagePreview(const QString &fileName) const
-{
-  QLabel *label = new QLabel();
-  label->setPixmap(QPixmap(fileName));
-  return label;
-}
-
-QWidget *PreviewGenerator::genTxtPreview(const QString &fileName) const
+bool PreviewGenerator::previewSupported(const QString &fileExtension) const
 {
-  QTextEdit *edit = new QTextEdit();
-  edit->setText(MOBase::readFileText(fileName));
-  edit->setReadOnly(true);
-  return edit;
+  return m_PreviewPlugins.find(fileExtension.toLower()) != m_PreviewPlugins.end();
 }
 
-QWidget *PreviewGenerator::genDDSPreview(const QString &fileName) const
+QWidget *PreviewGenerator::genPreview(const QString &fileName) const
 {
-  QGLWidget glWidget;
-  glWidget.makeCurrent();
-
-  GLuint texture = glWidget.bindTexture(fileName);
-  if (!texture)
-    return nullptr;
-
-  // Determine the size of the DDS image
-  GLint width, height;
-  glBindTexture(GL_TEXTURE_2D, texture);
-  glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &width);
-  glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &height);
-
-  if (width == 0 || height == 0)
-    return nullptr;
-
-  QGLPixelBuffer pbuffer(QSize(width, height), glWidget.format(), &glWidget);
-  if (!pbuffer.makeCurrent())
+  auto iter = m_PreviewPlugins.find(QFileInfo(fileName).completeSuffix().toLower());
+  if (iter != m_PreviewPlugins.end()) {
+    return iter->second->genFilePreview(fileName, m_MaxSize);
+  } else {
     return nullptr;
-
-  pbuffer.drawTexture(QRectF(-1, -1, 2, 2), texture);
-
-  QLabel *label = new QLabel();
-  QImage image = pbuffer.toImage();
-  if ((image.size().width() > m_MaxSize.width()) ||
-      (image.size().height() > m_MaxSize.height())) {
-    image = image.scaled(m_MaxSize, Qt::KeepAspectRatio);
   }
-
-  label->setPixmap(QPixmap::fromImage(image));
-  return label;
 }
-- 
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