From 56cdfd3822d2800abdd2f912ab7f76a5764793a7 Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Sun, 19 Oct 2008 13:45:07 +0000
Subject: scrollpane widget, updated chatbox

---
 src/ui/scrollpane.cc | 172 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 172 insertions(+)
 create mode 100644 src/ui/scrollpane.cc

(limited to 'src/ui/scrollpane.cc')

diff --git a/src/ui/scrollpane.cc b/src/ui/scrollpane.cc
new file mode 100644
index 0000000..69bc159
--- /dev/null
+++ b/src/ui/scrollpane.cc
@@ -0,0 +1,172 @@
+/*
+   ui/scrollpane.cc
+   This file is part of the Osirion project and is distributed under
+   the terms of the GNU General Public License version 2
+*/
+
+#include <cmath>
+
+#include "ui/scrollpane.h"
+#include "render/text.h"
+#include "render/gl.h"
+
+namespace ui
+{
+
+ScrollPane::ScrollPane(Widget *parent, ui::Text &text) : Widget(parent), scrollpane_text(text)
+{
+	set_label("scrollpane");
+}
+
+ScrollPane::~ScrollPane()
+{
+}
+	
+void ScrollPane::set_scroll(int scroll)
+{
+	scrollpane_scroll = scroll;
+
+	if (scrollpane_scroll > (int) scrollpane_text.size())
+		scrollpane_scroll = (int) scrollpane_text.size();
+	else if (scrollpane_scroll < 0)
+		scrollpane_scroll = 0;
+}
+
+void ScrollPane::inc_scroll(int scroll)
+{
+	scrollpane_scroll += scroll;
+
+	if (scrollpane_scroll > (int) scrollpane_text.size())
+		scrollpane_scroll = (int) scrollpane_text.size();
+}
+
+void ScrollPane::dec_scroll(int scroll)
+{
+	scrollpane_scroll -= scroll;
+
+	if (scrollpane_scroll < 0)
+		scrollpane_scroll = 0;
+}
+
+void ScrollPane::draw()
+{
+	render::Text::setfont(font()->name().c_str(), font()->width(), font()->height());
+	render::gl::enable(GL_TEXTURE_2D);
+
+	// text size
+	int text_height = (int) floorf(height() / font()->height());
+	int text_width = (int) floorf(width() / font()->width());
+
+	// validate scroll position
+	if (scrollpane_scroll > (int) scrollpane_text.size())
+		scrollpane_scroll = (int) scrollpane_text.size();
+	else if (scrollpane_scroll < 0)
+		scrollpane_scroll = 0;
+	
+	int bottom = (int) scrollpane_text.size() - scrollpane_scroll;
+	int current_line = 0;
+
+	ui::Text lines;
+
+	for (ui::Text::const_iterator it = scrollpane_text.begin(); it != scrollpane_text.end() && current_line < bottom; it++) {
+		if (current_line >= bottom - text_height) {
+			std::string linedata(*it);
+			linedata += '\n';
+
+			std::string word;
+			size_t word_length = 0;
+
+			std::string line;
+			size_t line_length = 0;
+
+			const char *c = linedata.c_str();
+			char pen = 'N';
+			char wordpen = 'N';
+
+			while (*c) {
+
+				// color code
+				if (aux::is_color_code(c)) {
+					c++;
+					pen = *c;
+					word += '^';
+					word += pen;
+				}
+
+				// new word, wrap if necessary
+				else if ((*c == '\n' ) || ( *c == ' ')) {
+					
+					if (line_length + word_length > (size_t) text_width) {
+						if (line.size()) {
+							lines.push_back(line);
+							line.clear();
+							line += '^';
+							line += wordpen;
+							line_length = 0;
+						}
+					}
+					
+					line.append(word);
+					line_length += word_length;
+
+					word.clear();
+					word_length = 0;
+					wordpen = pen;
+									
+					// new line
+					if (*c == '\n' ) {
+						lines.push_back(line);
+						line.clear();
+						line_length = 0;
+					// new word
+					} else if (*c == ' ' ) {
+						line += ' ';
+						line_length++;
+					}
+				}
+
+				// new character
+				else {	
+					word += *c;
+					word_length++;
+					
+					if (word_length == (size_t) text_width) {
+						if (line.size()) {
+							lines.push_back(line);
+							line.clear();
+							line += '^';
+							line += wordpen;
+							line_length = 0;
+						}
+
+						line.append(word);
+						line_length = word_length;
+
+						word.clear();
+						word_length = 0;
+						wordpen = pen;
+					}
+				}
+
+				c++;
+			}
+			
+		}
+		current_line++;		
+	}
+
+	render::gl::color(palette()->text());
+	const math ::Vector2f gl(global_location());
+	float y = height() - font()->height();
+	
+	for (ui::Text::reverse_iterator rit = lines.rbegin(); (y >= 0) && (rit != lines.rend()); ++rit) {
+		render::Text::draw(gl.x, gl.y + y, (*rit));
+		y -= font()->height();
+	}
+
+	render::gl::disable(GL_TEXTURE_2D);
+}
+
+}
+
+
-- 
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