WIP: GUI Toolkit

LinearLayout.cc

@@ -0,0 +1,77 @@
+
+#include "LinearLayout.hh"
+
+LinearLayout::LinearLayout(int direction, int width, int height, std::string name)
+  : View(width, height, std::move(name)), direction_(direction)
+{
+}
+
+LinearLayout::~LinearLayout()
+{
+}
+
+void LinearLayout::setChildPadding(int pad)
+{
+  if (pad != padChildren_) {
+    padChildren_ = pad;
+
+    layout();
+  }
+}
+
+void LinearLayout::layout()
+{
+  // TODO: Respect parent padding
+  if ((width_ == MATCH_PARENT) && parent_)
+    realWidth_ = parent_->getRealWidth();
+
+  if ((height_ == MATCH_PARENT) && parent_)
+    realHeight_ = parent_->getRealHeight();
+
+  if (direction_ == DIR_VERTICAL) {
+    int contentWidth = 0;
+
+    if (width_ == WRAP_CONTENT) {
+      // Determine content width
+      for(auto& ent : children_) {
+	auto& child = *(std::get<1>(ent));
+	assert(child.getHeight() != MATCH_PARENT);
+	if (child.getWidth() == MATCH_PARENT)
+	  continue;
+	if (child.getWidth() == WRAP_CONTENT)
+	  _layout(child);
+	contentWidth = std::max(contentWidth, child.getRealWidth());
+      }
+      assert(contentWidth > 0);
+      realWidth_ = contentWidth + padLeft_ + padRight_;
+      printf("Inner width: %d, outer width: %d\n", contentWidth, realWidth_);
+    }
+
+    int currentY = padTop_;
+    
+    // Layout children
+    for(auto& ent : children_) {
+      auto& child = *(std::get<1>(ent));
+      if (child.getWidth() == MATCH_PARENT)
+	_layout(child);
+
+      SDL_Rect cr;
+      cr.x = padLeft_;
+      cr.y = currentY;
+      if ((realWidth_ - padLeft_ - padRight_) > child.getRealWidth())
+	cr.w = child.getRealWidth();
+      else
+	cr.w = realWidth_ - padLeft_ - padRight_;
+      cr.h = child.getRealHeight();
+      
+      std::get<2>(ent) = cr;
+      
+      currentY += child.getRealHeight() + padChildren_;
+    }
+
+    if (height_ == WRAP_CONTENT)
+      realHeight_ = currentY - padChildren_ + padBottom_;
+  }
+  
+  invalidateGL();
+}