Changeset 769 for trunk/src/plugins/imageformats

Timestamp:

Aug 2, 2010, 9:27:30 PM (15 years ago)

Author:

Dmitry A. Kuminov

Message:

trunk: Merged in qt 4.6.3 sources from branches/vendor/nokia/qt.

Location:

trunk

Files:

• . (modified) (1 prop)
• src/plugins/imageformats/ico/qicohandler.cpp (modified) (2 diffs)
• src/plugins/imageformats/ico/qicohandler.h (modified) (1 diff)
• src/plugins/imageformats/jpeg/qjpeghandler.cpp (modified) (1 diff)

trunk/src/plugins/imageformats/ico/qicohandler.cpp

@@ -54 +54 @@
 #include <QtCore/QFile>
 #include <QtCore/QBuffer>
+#include <qvariant.h>
 // These next two structs represent how the icon information is stored
 // in an ICO file.
@@ -773 +774 @@
 }
 
+QVariant QtIcoHandler::option(ImageOption option) const
+{
+    if (option == Size) {
+        QIODevice *device = QImageIOHandler::device();
+        qint64 oldPos = device->pos();
+        ICONDIRENTRY iconEntry;
+        if (device->seek(oldPos + ICONDIR_SIZE + (m_currentIconIndex * ICONDIRENTRY_SIZE))) {
+            if (readIconDirEntry(device, &iconEntry)) {
+                device->seek(oldPos);
+                return QSize(iconEntry.bWidth, iconEntry.bHeight);
+            }
+        }
+        if (!device->isSequential())
+            device->seek(oldPos);
+    }
+    return QVariant();
+}
+
+bool QtIcoHandler::supportsOption(ImageOption option) const
+{
+    return option == Size;
+}
+
 /*!
  * Verifies if some values (magic bytes) are set as expected in the header of the file.

trunk/src/plugins/imageformats/ico/qicohandler.h

@@ -63 +63 @@
     static bool canRead(QIODevice *device);
     
+    bool supportsOption(ImageOption option) const;
+    QVariant option(ImageOption option) const;
+
 private:
     int m_currentIconIndex;

trunk/src/plugins/imageformats/jpeg/qjpeghandler.cpp

@@ -1189 +1189 @@
     }
 
-    return device->peek(2) == "\xFF\xD8";
+    char buffer[2];
+    if (device->peek(buffer, 2) != 2)
+        return false;
+
+    return uchar(buffer[0]) == 0xff && uchar(buffer[1]) == 0xd8;
 }