# HG changeset patch
# User Teemu Piippo <teemu@hecknology.net>
# Date 1522314654 -10800
# Node ID b725b7fb63a55df941e228be8194b1d8fd8e4b73
# Parent  48374309f3d19f943ad10f7e80c7d08dae49445b
started work on the pattern editor

diff -r 48374309f3d1 -r b725b7fb63a5 CMakeLists.txt
--- a/CMakeLists.txt	Thu Mar 29 10:42:45 2018 +0300
+++ b/CMakeLists.txt	Thu Mar 29 12:10:54 2018 +0300
@@ -93,7 +93,10 @@
 	src/toolsets/viewtoolset.cpp
 	src/types/boundingbox.cpp
 	src/types/matrix.cpp
+	src/types/pattern.cpp
 	src/types/vertex.cpp
+	src/widgets/patterneditor.cpp
+	src/widgets/patternviewer.cpp
 	src/widgets/headeredit.cpp
 	src/widgets/vertexobjecteditor.cpp
 )
@@ -171,7 +174,10 @@
 	src/types/boundingbox.h
 	src/types/library.h
 	src/types/matrix.h
+	src/types/pattern.h
 	src/types/vertex.h
+	src/widgets/patterneditor.h
+	src/widgets/patternviewer.h
 	src/widgets/headeredit.h
 	src/widgets/vertexobjecteditor.h
 )
@@ -200,6 +206,7 @@
 	src/partdownloader.ui
 	src/widgets/vertexobjecteditor.ui
 	src/widgets/headeredit.ui
+	src/widgets/patterneditor.ui
 )
 
 set (LDFORGE_OTHER_FILES
diff -r 48374309f3d1 -r b725b7fb63a5 data/pattern-background.png
Binary file data/pattern-background.png has changed
diff -r 48374309f3d1 -r b725b7fb63a5 data/transparent-background.png
Binary file data/transparent-background.png has changed
diff -r 48374309f3d1 -r b725b7fb63a5 ldforge.qrc
--- a/ldforge.qrc	Thu Mar 29 10:42:45 2018 +0300
+++ b/ldforge.qrc	Thu Mar 29 12:10:54 2018 +0300
@@ -107,7 +107,9 @@
 	<file>./icons/visibility-toggle.png</file>
 	<file>./icons/wireframe.png</file>
 	<file>./icons/ytruder.png</file>
+	<file>data/pattern-background.png</file>
 	<file>data/primitive-categories.cfg</file>
+	<file>data/transparent-background.png</file>
 	<file>LICENSE</file>
 	<file>LICENSE.icons</file>
 </qresource>
diff -r 48374309f3d1 -r b725b7fb63a5 src/main.cpp
--- a/src/main.cpp	Thu Mar 29 10:42:45 2018 +0300
+++ b/src/main.cpp	Thu Mar 29 12:10:54 2018 +0300
@@ -21,6 +21,7 @@
 #include "documentmanager.h"
 #include "mainwindow.h"
 #include "generics/reverse.h"
+#include "widgets/patterneditor.h"
 
 int main (int argc, char* argv[])
 {
@@ -35,6 +36,13 @@
 	qRegisterMetaTypeStreamOperators<Vertex>("Vertex");
 	initializeCrashHandler();
 	LDColor::initColors();
+
+	Pattern pattern {{200, 100}};
+	PatternEditor* editor = new PatternEditor {pattern, nullptr};
+	editor->setMinimumSize({320, 200});
+	editor->show();
+	return app.exec();
+
 	MainWindow* mainWindow = new MainWindow;
 	mainWindow->show();
 
diff -r 48374309f3d1 -r b725b7fb63a5 src/types/pattern.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/types/pattern.cpp	Thu Mar 29 12:10:54 2018 +0300
@@ -0,0 +1,11 @@
+#include "pattern.h"
+
+ColoredPolygon::ColoredPolygon(const QPolygonF& polygon, LDColor color) :
+	geometry {polygon},
+	color {color} {}
+
+Pattern::Pattern(const QSizeF& size) :
+	canvasSize {size}
+{
+
+}
diff -r 48374309f3d1 -r b725b7fb63a5 src/types/pattern.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/types/pattern.h	Thu Mar 29 12:10:54 2018 +0300
@@ -0,0 +1,19 @@
+#pragma once
+#include <QPolygonF>
+#include "../main.h"
+
+struct ColoredPolygon
+{
+	QPolygonF geometry;
+	LDColor color;
+
+	ColoredPolygon(const QPolygonF& polygon, LDColor color);
+};
+
+struct Pattern
+{
+	Pattern(const QSizeF& size);
+
+	QVector<ColoredPolygon> polygons;
+	QSizeF canvasSize;
+};
diff -r 48374309f3d1 -r b725b7fb63a5 src/widgets/patterneditor.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/widgets/patterneditor.cpp	Thu Mar 29 12:10:54 2018 +0300
@@ -0,0 +1,18 @@
+#include "patterneditor.h"
+#include "patternviewer.h"
+#include "ui_patterneditor.h"
+
+PatternEditor::PatternEditor(Pattern& pattern, QWidget* parent) :
+	QMainWindow {parent},
+	ui {*new Ui_PatternEditor},
+	viewer {new PatternViewer {this}},
+	pattern {pattern}
+{
+	ui.setupUi(this);
+	ui.patternFrame->layout()->addWidget(this->viewer);
+}
+
+PatternEditor::~PatternEditor()
+{
+	delete &this->ui;
+}
diff -r 48374309f3d1 -r b725b7fb63a5 src/widgets/patterneditor.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/widgets/patterneditor.h	Thu Mar 29 12:10:54 2018 +0300
@@ -0,0 +1,25 @@
+#pragma once
+#include <QMainWindow>
+#include "../main.h"
+#include "../types/pattern.h"
+
+class PatternEditor : public QMainWindow
+{
+	Q_OBJECT
+
+public:
+	PatternEditor(Pattern& pattern, QWidget *parent = nullptr);
+	~PatternEditor();
+
+signals:
+
+public slots:
+
+private:
+	friend class PatternViewer;
+
+	class Ui_PatternEditor& ui;
+	class PatternViewer* viewer;
+	Pattern& pattern;
+	LDColor currentColor = MainColor;
+};
diff -r 48374309f3d1 -r b725b7fb63a5 src/widgets/patterneditor.ui
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/widgets/patterneditor.ui	Thu Mar 29 12:10:54 2018 +0300
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>PatternEditor</class>
+ <widget class="QMainWindow" name="PatternEditor">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>800</width>
+    <height>600</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Pattern editor</string>
+  </property>
+  <widget class="QWidget" name="centralwidget">
+   <layout class="QVBoxLayout" name="verticalLayout_2">
+    <item>
+     <widget class="QFrame" name="patternFrame">
+      <property name="frameShape">
+       <enum>QFrame::StyledPanel</enum>
+      </property>
+      <property name="frameShadow">
+       <enum>QFrame::Raised</enum>
+      </property>
+      <layout class="QVBoxLayout" name="verticalLayout"/>
+     </widget>
+    </item>
+   </layout>
+  </widget>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>
diff -r 48374309f3d1 -r b725b7fb63a5 src/widgets/patternviewer.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/widgets/patternviewer.cpp	Thu Mar 29 12:10:54 2018 +0300
@@ -0,0 +1,49 @@
+#include <QPainter>
+#include <QPaintEvent>
+#include "patterneditor.h"
+#include "patternviewer.h"
+
+/*
+ * Construct a pattern viewer for an existing pattern editor.
+ */
+PatternViewer::PatternViewer(PatternEditor* parent) :
+	QWidget {parent},
+	editor {parent}
+{
+	this->transformation.scale(4, 4);
+}
+
+/*
+ * Unfortunately, Qt doesn't provide an easy way to translate a floating point rectangle
+ * into a floating point polygon. So here's a manual implementation.
+ */
+static QPolygonF transformRect(const QRectF& rect, const QTransform& transform)
+{
+	QPolygonF transformed;
+	for (const QPointF& point : {
+		rect.topLeft(),
+		rect.topRight(),
+		rect.bottomRight(),
+		rect.bottomLeft()
+	}) {
+		transformed.append(transform.map(point));
+	}
+	return transformed;
+}
+
+/*
+ * Renders the pattern.
+ */
+void PatternViewer::paintEvent(QPaintEvent* event)
+{
+	const Pattern& pattern = this->editor->pattern;
+	static const QPixmap viewerBackground {":/data/pattern-background.png"};
+	static const QPixmap canvasBackground {":/data/transparent-background.png"};
+	QPainter painter {this};
+	painter.drawTiledPixmap(this->rect(), viewerBackground);
+	painter.setBrush(canvasBackground);
+	QRectF canvasRect = QRectF {{0.0f, 0.0f}, pattern.canvasSize};
+	painter.drawPolygon(::transformRect(canvasRect, this->transformation));
+	painter.setTransform(this->transformation);
+	event->accept();
+}
diff -r 48374309f3d1 -r b725b7fb63a5 src/widgets/patternviewer.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/widgets/patternviewer.h	Thu Mar 29 12:10:54 2018 +0300
@@ -0,0 +1,20 @@
+#pragma once
+#include <QWidget>
+#include "patterneditor.h"
+
+class PatternViewer : public QWidget
+{
+	Q_OBJECT
+
+public:
+	PatternViewer(PatternEditor* parent);
+
+signals:
+public slots:
+protected:
+	void paintEvent(QPaintEvent* event) override;
+
+private:
+	class PatternEditor* const editor;
+	QTransform transformation = {};
+};