From 7262d30e9e689aaacd7926c90d953ab86cd9cfa7 Mon Sep 17 00:00:00 2001
From: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Date: Tue, 2 Jul 2019 18:07:37 +0200
Subject: Implement load of sources in emscripten build and minor fixes.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
---
 qtmips_gui/mainwindow.cpp        | 17 ++++++++++++++++-
 qtmips_gui/srceditor.cpp         | 23 +++++++++++++++++++++--
 qtmips_gui/srceditor.h           |  2 ++
 qtmips_machine/qtmipsmachine.cpp |  4 +++-
 qtmips_machine/qtmipsmachine.h   |  2 +-
 5 files changed, 43 insertions(+), 5 deletions(-)

diff --git a/qtmips_gui/mainwindow.cpp b/qtmips_gui/mainwindow.cpp
index 58a0173..e3ad8dd 100644
--- a/qtmips_gui/mainwindow.cpp
+++ b/qtmips_gui/mainwindow.cpp
@@ -51,6 +51,11 @@
 #include "gotosymboldialog.h"
 #include "fixmatheval.h"
 
+#ifdef __EMSCRIPTEN__
+#include <QFileInfo>
+#include "qhtml5file.h"
+#endif
+
 MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) {
     machine = nullptr;
     corescene = nullptr;
@@ -491,6 +496,7 @@ void MainWindow::new_source() {
 }
 
 void MainWindow::open_source() {
+#ifndef __EMSCRIPTEN__
     QString file_name = "";
 
     file_name = QFileDialog::getOpenFileName(this, tr("Open File"), "", "Source Files (*.asm *.S *.s)");
@@ -506,6 +512,15 @@ void MainWindow::open_source() {
             delete(editor);
         }
     }
+#else
+    QHtml5File::load("*", [&](const QByteArray &content, const QString &filename) {
+            SrcEditor *editor = new SrcEditor();
+            editor->loadByteArray(content, filename);
+            central_window->addTab(editor, editor->title());
+            central_window->setCurrentWidget(editor);
+            connect(editor, SIGNAL(destroyed(QObject*)), this, SLOT(tab_widget_destroyed(QObject*)));
+            });
+#endif
 }
 
 void MainWindow::save_source_as() {
@@ -584,7 +599,7 @@ static std::uint64_t string_to_uint64(QString str, int base,
 }
 
 void MainWindow::compile_source() {
-    SymbolTableDb symtab(machine->symbol_table());
+    SymbolTableDb symtab(machine->symbol_table(true));
     int error_line = 0;
     if (current_srceditor == nullptr)
         return;
diff --git a/qtmips_gui/srceditor.cpp b/qtmips_gui/srceditor.cpp
index 2f4d3a6..e8bdb85 100644
--- a/qtmips_gui/srceditor.cpp
+++ b/qtmips_gui/srceditor.cpp
@@ -41,12 +41,21 @@
 
 #include "srceditor.h"
 
-SrcEditor::SrcEditor(QWidget *parent) : Super(parent) {
+void SrcEditor::setup_common() {
+    QFont font;
+    font.setFamily("Courier");
+    font.setFixedPitch(true);
+    font.setPointSize(10);
+    setFont(font);
     tname = "Unknown";
 }
 
+SrcEditor::SrcEditor(QWidget *parent) : Super(parent) {
+    setup_common();
+}
+
 SrcEditor::SrcEditor(const QString &text, QWidget *parent) : Super(text, parent) {
-    tname = "Unknown";
+    setup_common();
 }
 
 SrcEditor::~SrcEditor() {
@@ -74,6 +83,16 @@ bool SrcEditor::loadFile(QString filename) {
     }
 }
 
+bool SrcEditor::loadByteArray(const QByteArray &content, QString filename) {
+    setPlainText(QString::fromUtf8(content.data(), content.size()));
+    if (!filename.isEmpty()) {
+        QFileInfo fi(filename);
+        fname = filename;
+        tname = fi.fileName();
+    }
+    return true;
+}
+
 bool SrcEditor::saveFile(QString filename) {
     if (filename.isEmpty())
         filename = this->filename();
diff --git a/qtmips_gui/srceditor.h b/qtmips_gui/srceditor.h
index a727f99..9d25be7 100644
--- a/qtmips_gui/srceditor.h
+++ b/qtmips_gui/srceditor.h
@@ -51,8 +51,10 @@ public:
     QString title();
     bool loadFile(QString filename);
     bool saveFile(QString filename = "");
+    bool loadByteArray(const QByteArray &content, QString filename = "");
     void setCursorToLine(int ln);
 private:
+    void setup_common();
     QString fname;
     QString tname;
 };
diff --git a/qtmips_machine/qtmipsmachine.cpp b/qtmips_machine/qtmipsmachine.cpp
index 68eeeca..e838429 100644
--- a/qtmips_machine/qtmipsmachine.cpp
+++ b/qtmips_machine/qtmipsmachine.cpp
@@ -214,7 +214,9 @@ LcdDisplay *QtMipsMachine::peripheral_lcd_display() {
     return perip_lcd_display;
 }
 
-const SymbolTable *QtMipsMachine::symbol_table() {
+const SymbolTable *QtMipsMachine::symbol_table(bool create) {
+    if (create && (symtab == nullptr))
+        symtab = new SymbolTable;
     return symtab;
 }
 
diff --git a/qtmips_machine/qtmipsmachine.h b/qtmips_machine/qtmipsmachine.h
index ef96e09..e5bbdb3 100644
--- a/qtmips_machine/qtmipsmachine.h
+++ b/qtmips_machine/qtmipsmachine.h
@@ -76,7 +76,7 @@ public:
     SerialPort *serial_port();
     PeripSpiLed *peripheral_spi_led();
     LcdDisplay *peripheral_lcd_display();
-    const SymbolTable *symbol_table();
+    const SymbolTable *symbol_table(bool create = false);
     void set_symbol(QString name, std::uint32_t value, std::uint32_t size,
                     unsigned char info = 0, unsigned char other = 0);
     const Core *core();
-- 
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