WIP: GUI Toolkit

2015-03-09 01:11:13 +01:00
parent ffbc59140a
commit 9d7dd452c7
24 changed files with 1003 additions and 134 deletions
--- a/TextWidget.cc
+++ b/TextWidget.cc
@@ -0,0 +1,84 @@
+#include <SDL2/SDL_ttf.h>
+
+#include "font.hh"
+#include "TextWidget.hh"
+
+TextWidget::TextWidget(Font& font, std::string text, int width, int height)
+  : Widget(width, height), text_(std::move(text)), font_(font),
+    textSurf_(nullptr)
+{
+  layout();
+}
+
+TextWidget::~TextWidget()
+{
+}
+
+void TextWidget::setText(std::string text)
+{
+  if (text != text_) {
+    text_ = std::move(text);
+    invalidateGL();
+    layout();
+  }
+}
+
+void TextWidget::setForegroundColor(SDL_Color fg)
+{
+  Widget::setForegroundColor(fg);
+
+  // Trigger text rerender
+  layout();
+}
+
+void TextWidget::layout()
+{
+  // Determine text size
+  int width, height;
+  if(TTF_SizeUTF8(font_.getFont(), text_.c_str(), &width, &height) != 0)
+    throw TTFException{};
+
+  if ((width > (width_ - padLeft_ - padRight_)) && (width_ != WRAP_CONTENT)) {
+    textSurf_.reset(TTF_RenderUTF8_Blended_Wrapped(font_.getFont(),
+						   text_.c_str(),
+						   fg_, width_- padLeft_ - padRight_));
+    if (!textSurf_)
+      throw TTFException{};
+
+    if (height_ == WRAP_CONTENT)
+      // TODO: Get proper tight bounding box for multiline text
+      if (realHeight_ != (textSurf_->h - // TTF_FontLineSkip(font_.getFont())
+			  + padTop_ + padBottom_)) {
+	realHeight_ = textSurf_->h - // TTF_FontLineSkip(font_.getFont())
+	  + padTop_ + padBottom_;
+	invalidateGL();
+      }
+  } else {
+    textSurf_.reset(TTF_RenderUTF8_Blended(font_.getFont(), text_.c_str(), fg_));
+
+    if (!textSurf_)
+      throw TTFException{};
+    
+    if (width_ == WRAP_CONTENT)
+      if (realWidth_ != (textSurf_->w + padLeft_ + padRight_)) {
+	realWidth_ = textSurf_->w + padLeft_ + padRight_;
+	invalidateGL();
+      }
+    if (height_ == WRAP_CONTENT)
+      if (realHeight_ != (textSurf_->h + padTop_ + padBottom_)) {
+	realHeight_ = textSurf_->h + padTop_ + padBottom_;
+	invalidateGL();
+      }
+  }
+  
+}
+
+void TextWidget::render(SDL_Surface *dst, SDL_Rect *dstRect) const
+{
+  Widget::render(dst, dstRect);
+
+  SDL_Rect rect = calcContentRect(dst, dstRect, textSurf_->clip_rect);
+  
+  if (SDL_BlitSurface(textSurf_.get(), nullptr, dst, &rect) != 0)
+    throw SDLException{};
+}