From 7ea534dd1c8bf72200a999cae554d842d9035ba9 Mon Sep 17 00:00:00 2001
From: Nao Pross <naopross@thearcway.org>
Date: Mon, 1 Jan 2018 18:44:35 +0100
Subject: New StatementDialog, rename diagram classes

Other changes:
  - Use raw pointer instead of smart pointers to manage resources
  - Initial Painter implementation
---
 src/ui/painter.cpp | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 56 insertions(+), 4 deletions(-)

(limited to 'src/ui/painter.cpp')

diff --git a/src/ui/painter.cpp b/src/ui/painter.cpp
index b04e389..74f140e 100644
--- a/src/ui/painter.cpp
+++ b/src/ui/painter.cpp
@@ -1,14 +1,66 @@
 #include "ui/painter.h"
-#include "ui_painter.h"
+
+#include "debugtools.h"
+
+#include <cmath>
+
 
 Painter::Painter(QWidget *parent) :
     QWidget(parent),
-    _ui(new Ui::Painter)
+    _font("Latin Modern Roman"),
+    _fontMetrics(_font)
 {
-    _ui->setupUi(this);
+    // default font size
+    _font.setPixelSize(15);
 }
 
 Painter::~Painter()
 {
-    delete _ui;
+
+}
+
+void Painter::paintEvent(QPaintEvent *event)
+{
+    Q_UNUSED(event);
+
+    if (_structogram == nullptr) {
+        return;
+    }
+
+    if (*_structogram == nullptr) {
+        return;
+    }
+
+    QPainter qp(this);
+    qp.setFont(_font);
+
+    // TODO default values should not be magic numbers
+    QRect rect(50, 50, 600, 00);
+    for (auto it = (*_structogram)->begin(); it != (*_structogram)->end(); ++it) {
+        drawStatement(qp, *it, rect);
+        rect.setY(rect.y() + rect.height());
+    }
+}
+
+void Painter::drawStatement(QPainter &qp, samb::Statement &statement, const QRect &rect)
+{
+    QRect textRect(rect.x() + _margin,
+                   rect.y() + _margin,
+                   rect.width() - 2*_margin,
+                   rect.height() - 2*_margin);
+
+    int textHeight;
+    if (textRect.width() < _fontMetrics.width(statement.text())) {
+        textHeight = (_fontMetrics.height() + _fontMetrics.lineSpacing()) *
+                        (int) ceil(_fontMetrics.width(statement.text()) / (double) textRect.width());
+    } else {
+        textHeight = _fontMetrics.height();
+    }
+
+    if (textRect.height() < textHeight) {
+        debug_msg("painter error, textRect.height() < height");
+    }
+
+    qp.drawRect(rect);
+    qp.drawText(textRect, Qt::AlignVCenter, statement.text());
 }
-- 
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