summaryrefslogtreecommitdiff
path: root/dggui/textedit.cc
diff options
context:
space:
mode:
authorBent Bisballe Nyeng <deva@aasimon.org>2020-12-29 16:09:43 +0100
committerBent Bisballe Nyeng <deva@aasimon.org>2020-12-29 16:39:54 +0100
commit645250e1cd8ce9bc1faea599df7a1b05836bfeb8 (patch)
treec6311afab3900d2dd2aecbfbe1ac348d0e48c428 /dggui/textedit.cc
parentdce64999d3325c5b55499d6ba657066efa48fbff (diff)
Split UI code into application/plugin UI and UI library.
Diffstat (limited to 'dggui/textedit.cc')
-rw-r--r--dggui/textedit.cc201
1 files changed, 201 insertions, 0 deletions
diff --git a/dggui/textedit.cc b/dggui/textedit.cc
new file mode 100644
index 0000000..9688b82
--- /dev/null
+++ b/dggui/textedit.cc
@@ -0,0 +1,201 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ * lineedit.cc
+ *
+ * Tue Oct 21 11:25:26 CEST 2014
+ * Copyright 2014 Jonas Suhr Christensen
+ * jsc@umbraculum.org
+ ****************************************************************************/
+
+/*
+ * This file is part of DrumGizmo.
+ *
+ * DrumGizmo is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * DrumGizmo is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with DrumGizmo; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#include "textedit.h"
+
+#include "painter.h"
+
+namespace GUI
+{
+
+TextEdit::TextEdit(Widget* parent) : Widget(parent), scroll(this)
+{
+ setReadOnly(true);
+
+ scroll.move(width() - 2*x_border - 3, y_border - 1);
+ scroll.resize(16, 100);
+ CONNECT(&scroll, valueChangeNotifier, this, &TextEdit::scrolled);
+}
+
+TextEdit::~TextEdit()
+{
+}
+
+void TextEdit::resize(std::size_t width, std::size_t height)
+{
+ Widget::resize(width, height);
+
+ needs_preprocessing = true;
+ scroll.move(width - 2*x_border - 3, y_border - 1);
+ scroll.resize(scroll.width(), std::max((int)height - 2*(y_border - 1), 0));
+}
+
+void TextEdit::setReadOnly(bool readonly)
+{
+ this->readonly = readonly;
+}
+
+bool TextEdit::readOnly()
+{
+ return readonly;
+}
+
+void TextEdit::setText(const std::string& text)
+{
+ this->text = text;
+
+ needs_preprocessing = true;
+ redraw();
+ textChangedNotifier();
+}
+
+std::string TextEdit::getText()
+{
+ return text;
+}
+
+void TextEdit::preprocessText()
+{
+ std::vector<std::string> lines;
+
+ preprocessed_text.clear();
+ std::string text = this->text;
+
+ // Handle tab characters
+ for(std::size_t i = 0; i < text.length(); ++i)
+ {
+ char ch = text.at(i);
+ if(ch == '\t')
+ {
+ text.erase(i, 1);
+ text.insert(i, 4, ' ');
+ }
+ }
+
+ // Handle "\r"
+ for(std::size_t i = 0; i < text.length(); ++i)
+ {
+ char ch = text.at(i);
+ if(ch == '\r')
+ {
+ text.erase(i, 1);
+ }
+ }
+
+ // Handle new line characters
+ std::size_t pos = 0;
+ do
+ {
+ pos = text.find("\n");
+ lines.push_back(text.substr(0, pos));
+ text = text.substr(pos + 1);
+ } while(pos != std::string::npos);
+
+ // Wrap long lines
+ auto const max_width = width() - 2*x_border - 10 - scroll.width();
+ for(auto const& line: lines)
+ {
+ std::string valid;
+ std::string current;
+ for(auto c: line)
+ {
+ current += c;
+ if(c == ' ')
+ {
+ valid.append(current.substr(valid.size()));
+ }
+
+ if(font.textWidth(current) >= max_width)
+ {
+ if(valid.empty())
+ {
+ current.pop_back();
+ preprocessed_text.push_back(current);
+ current = c;
+ }
+ else
+ {
+ current = current.substr(valid.size());
+ valid.pop_back();
+ preprocessed_text.push_back(valid);
+ valid.clear();
+ }
+ }
+ }
+ preprocessed_text.push_back(current);
+ }
+}
+
+void TextEdit::repaintEvent(RepaintEvent* repaintEvent)
+{
+ if(needs_preprocessing)
+ {
+ preprocessText();
+ }
+
+ Painter p(*this);
+
+ // update values of scroll bar
+ scroll.setRange(height() / font.textHeight());
+ scroll.setMaximum(preprocessed_text.size());
+
+ if((width() == 0) || (height() == 0))
+ {
+ return;
+ }
+
+ box.setSize(width(), height());
+ p.drawImage(0, 0, box);
+ p.setColour(Colour(183.0f/255.0f, 219.0f/255.0f, 255.0f/255.0f, 1.0f));
+
+ int ypos = font.textHeight() + y_border;
+
+ auto scroll_value = scroll.value();
+ for(std::size_t i = 0; i < preprocessed_text.size() - scroll_value; ++i)
+ {
+ if(i * font.textHeight() >= (height() - y_border - font.textHeight()))
+ {
+ break;
+ }
+
+ auto const& line = preprocessed_text[scroll_value + i];
+ p.drawText(x_border, ypos, font, line);
+ ypos += font.textHeight();
+ }
+}
+
+void TextEdit::scrollEvent(ScrollEvent* scrollEvent)
+{
+ scroll.setValue(scroll.value() + scrollEvent->delta);
+}
+
+void TextEdit::scrolled(int value)
+{
+ (void)value;
+ redraw();
+}
+
+} // GUI::