rotated fonts, buttons, containers. Used for tabs for now

1 files changed, 74 insertions, 0 deletions

diff --git a/src/FbTk/Text.hh b/src/FbTk/Text.hh
index 977c85a..f04642d 100644
--- a/src/FbTk/Text.hh
+++ b/src/FbTk/Text.hh
@@ -29,6 +29,9 @@ namespace FbTk {
 class Font;
 
 enum Justify {LEFT, RIGHT, CENTER};
+// clockwise
+enum Orientation { ROT0=0, ROT90, ROT180, ROT270 };
+
 /**
    Aligns the text after max width and bevel
  */
@@ -36,6 +39,77 @@ int doAlignment(int max_width, int bevel, FbTk::Justify justify,
                 const FbTk::Font &font, const char * const text, 
                 unsigned int textlen, unsigned int &newlen);
 
+/**
+   There are 3 interesting translations:
+   1) Coords = simple rotation of coordinates
+   2) Position = adjusting (x,y) coordinates to use to position a box with X coords
+   3) Size = swapping of width and height if necessary
+ */
+
+
+// translate coordinates from ROT0 into different orientations
+// coords are relative to rot0 0,0 position
+// Need width and height of the area being rotated (in ROT0 coords)
+
+inline void translateCoords(Orientation orient, int &x, int &y, unsigned int w, unsigned int h) {
+
+    int orig_x = x;
+    int orig_y = y;
+
+    switch(orient) {
+    case ROT0:
+        break;
+    case ROT90:
+        x = h - orig_y;
+        y = orig_x;
+        break;
+    case ROT180:
+        x = w - orig_x;
+        y = h - orig_y;
+        break;
+    case ROT270:
+        x = orig_y;
+        y = w - orig_x;
+        break;
+    }
+
+}
+
+// When positioning an X11 box inside another area, we need to
+// relocate the x,y coordinates
+inline void translatePosition(Orientation orient, int &x, int &y, unsigned int w, unsigned int h) {
+
+    int orig_x = x;
+    int orig_y = y;
+
+    switch(orient) {
+    case ROT0:
+        break;
+    case ROT90:
+        x -= h;
+        break;
+    case ROT180:
+        x -= w;
+        y -= h;
+        break;
+    case ROT270:
+        y -= w;
+        break;
+    }
+
+}
+
+inline void translateSize(Orientation orient, unsigned int &w, unsigned int &h) {
+    if (orient == ROT0 || orient == ROT180)
+        return;
+
+    unsigned int tmp;
+    tmp = w;
+    w = h;
+    h = tmp;
+
+}
+
 } // end namespace FbTk
 
 #endif // FBTK_TEXT_HH