fontservices/textshaperplugin/IcuSource/layout/AnchorTables.cpp
changeset 0 1fb32624e06b
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fontservices/textshaperplugin/IcuSource/layout/AnchorTables.cpp	Tue Feb 02 02:02:46 2010 +0200
@@ -0,0 +1,105 @@
+/*
+ *
+ * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved
+ *
+ */
+
+#include "LETypes.h"
+#include "LEFontInstance.h"
+#include "DeviceTables.h"
+#include "AnchorTables.h"
+#include "LESwaps.h"
+
+U_NAMESPACE_BEGIN
+
+void AnchorTable::getAnchor(LEGlyphID glyphID, const LEFontInstance *fontInstance,
+                            LEPoint &anchor) const
+{
+    switch(SWAPW(anchorFormat)) {
+    case 1:
+    {
+        const Format1AnchorTable *f1 = (const Format1AnchorTable *) this;
+
+        f1->getAnchor(fontInstance, anchor);
+        break;
+    }
+
+    case 2:
+    {
+        const Format2AnchorTable *f2 = (const Format2AnchorTable *) this;
+
+        f2->getAnchor(glyphID, fontInstance, anchor);
+        break;
+    }
+
+    case 3:
+    {
+        const Format3AnchorTable *f3 = (const Format3AnchorTable *) this;
+
+        f3->getAnchor(fontInstance, anchor);
+        break;
+    }
+
+    default:
+        // Unknown format, set the anchor point to (0, 0)
+        anchor.fX = 0;
+        anchor.fY = 0;
+        break;
+    }
+}
+
+void Format1AnchorTable::getAnchor(const LEFontInstance *fontInstance, LEPoint &anchor) const
+{
+    le_int16 x = SWAPW(xCoordinate);
+    le_int16 y = SWAPW(yCoordinate);
+    LEPoint pixels;
+
+    fontInstance->transformFunits(x, y, pixels);
+
+    fontInstance->pixelsToUnits(pixels, anchor);
+}
+
+void Format2AnchorTable::getAnchor(LEGlyphID glyphID, const LEFontInstance *fontInstance, LEPoint &anchor) const
+{
+    LEPoint point;
+
+    if (! fontInstance->getGlyphPoint(glyphID, SWAPW(anchorPoint), point)) {
+        le_int16 x = SWAPW(xCoordinate);
+        le_int16 y = SWAPW(yCoordinate);
+
+        fontInstance->transformFunits(x, y, point);
+    }
+
+
+    fontInstance->pixelsToUnits(point, anchor);
+}
+
+void Format3AnchorTable::getAnchor(const LEFontInstance *fontInstance, LEPoint &anchor) const
+{
+    le_int16 x = SWAPW(xCoordinate);
+    le_int16 y = SWAPW(yCoordinate);
+    LEPoint pixels;
+    Offset dtxOffset = SWAPW(xDeviceTableOffset);
+    Offset dtyOffset = SWAPW(yDeviceTableOffset);
+
+    fontInstance->transformFunits(x, y, pixels);
+
+    if (dtxOffset != 0) {
+        const DeviceTable *dtx = (const DeviceTable *) ((char *) this + dtxOffset);
+        le_int16 adjx = dtx->getAdjustment((le_int16) fontInstance->getXPixelsPerEm());
+
+        pixels.fX += adjx;
+    }
+
+    if (dtyOffset != 0) {
+        const DeviceTable *dty = (const DeviceTable *) ((char *) this + dtyOffset);
+        le_int16 adjy = dty->getAdjustment((le_int16) fontInstance->getYPixelsPerEm());
+
+        pixels.fY += adjy;
+    }
+
+    fontInstance->pixelsToUnits(pixels, anchor);
+}
+
+U_NAMESPACE_END
+