1 files changed, 69 insertions, 0 deletions
diff --git a/scroller.c b/scroller.c
new file mode 100644
index 0000000..465dcde
--- /dev/null
+++ b/scroller.c
@@ -0,0 +1,69 @@
+/*
+ *  $Id: scroller.c,v 1.1 2004/07/05 17:55:34 lordjaxom Exp $
+ */
+
+#include "scroller.h"
+#include "screen.h"
+#include <vdr/tools.h>
+
+cText2SkinScroller::cText2SkinScroller(void) {
+  mScreen = NULL;
+  mLeft = mTop = mWidth = mHeight = 0;
+  mFont = NULL;
+  mColorFg = 0;
+  mColorBg = 0;
+  mOffset = 0;
+  mShown = 0;
+}
+
+cText2SkinScroller::cText2SkinScroller(cText2SkinScreen *Screen, int Left, int Top, int Width, int Height, const char *Text, const cFont *Font, tColor ColorFg, tColor ColorBg) {
+  Set(Screen, Left, Top, Width, Height, Text, Font, ColorFg, ColorBg);
+}
+
+void cText2SkinScroller::Set(cText2SkinScreen *Screen, int Left, int Top, int Width, int Height, const char *Text, const cFont *Font, tColor ColorFg, tColor ColorBg)
+{
+  mScreen  = Screen;
+  mLeft    = Left;
+  mTop     = Top;
+  mWidth   = Width;
+  mHeight  = Height;
+  mFont    = Font;
+  mColorFg = ColorFg;
+  mColorBg = ColorBg;
+  mOffset  = 0;
+	// sets mHeight to the actually used mHeight, which may be less than Height
+  mWrapper.Set(Text, Font, Width);
+  mShown   = min(Total(), mHeight / mFont->Height());
+  mHeight  = mShown * mFont->Height(); 
+  DrawText();
+}
+
+void cText2SkinScroller::Reset(void) {
+  mScreen = NULL; // just makes sure it won't draw anything
+}
+
+void cText2SkinScroller::DrawText(void) {
+  if (mScreen) {
+    for (int i = 0; i < mShown; i++)
+      mScreen->DrawText(mLeft, mTop + i * mFont->Height(), mWrapper.GetLine(mOffset + i), mColorFg, mColorBg, mFont, mWidth);
+  }
+}
+
+void cText2SkinScroller::Scroll(bool Up, bool Page)
+{
+  if (Up) {
+    if (CanScrollUp()) {
+      mOffset -= Page ? mShown : 1;
+      if (mOffset < 0)
+        mOffset = 0;
+      DrawText();
+    }
+  } else {
+    if (CanScrollDown()) {
+      mOffset += Page ? mShown : 1;
+      if (mOffset + mShown > Total())
+        mOffset = Total() - mShown;
+      DrawText();
+    }
+  }
+}