EMCC: Emscripten version wip

Author: chrisws

src/platform/emcc/canvas.cpp

@@ -97,8 +97,8 @@ EM_JS(void, draw_line, (int id, int x1, int y1, int x2, int y2, const char *colo
     var canvas = document.getElementById(id == -1 ? "canvas" : "canvas_" + id);
     var ctx = canvas.getContext("2d");
     ctx.beginPath();
-    ctx.moveTo(x1, y1);
-    ctx.lineTo(x2, y2);
+    ctx.moveTo(x1, y1 + 1);
+    ctx.lineTo(x2, y2 + 1);
     ctx.lineWidth = 1;
     ctx.strokeStyle = UTF8ToString(color);
     ctx.stroke();
@@ -153,7 +153,7 @@ strlib::String get_color() {
     uint8_t sR, sG, sB;
     GET_RGB(c, sR, sG, sB);
     char buf[8];
-    sprintf(buf, "#%x%x%x", sR, sG, sB);
+    sprintf(buf, "#%02x%02x%02x", sR, sG, sB);
     result.append(buf);
   }
   return result;

src/platform/emcc/runtime.cpp

@@ -95,6 +95,9 @@ Runtime::~Runtime() {
 }
 
 void Runtime::alert(const char *title, const char *message) {
+  EM_ASM_({
+      window.alert(UTF8ToString($0) + "\n" + UTF8ToString($1));
+    }, title, message);
 }
 
 int Runtime::ask(const char *title, const char *prompt, bool cancel) {
@@ -103,9 +106,9 @@ int Runtime::ask(const char *title, const char *prompt, bool cancel) {
 }
 
 void Runtime::browseFile(const char *url) {
-}
-
-void Runtime::enableCursor(bool enabled) {
+  EM_ASM_({
+      window.open(UTF8ToString($0));
+    }, url);
 }
 
 char *Runtime::getClipboardText() {
@@ -124,6 +127,7 @@ char *Runtime::loadResource(const char *fileName) {
 }
 
 void Runtime::optionsBox(StringList *items) {
+
 }
 
 void Runtime::pause(int timeout) {
@@ -207,6 +211,13 @@ void Runtime::setClipboardText(const char *text) {
 }
 
 void Runtime::showCursor(CursorType cursorType) {
+  static CursorType _cursorType;
+  if (_cursorType != cursorType) {
+    _cursorType = cursorType;
+    EM_ASM_({
+        document.body.style.cursor = UTF8ToString($0);
+      }, cursorType == kIBeam ? "text" : cursorType == kArrow ? "auto" : "pointer");
+  }
 }
 
 //

src/platform/emcc/runtime.h

@@ -20,7 +20,7 @@ struct Runtime : public System {
   void browseFile(const char *url);
   char *getClipboardText();
   int  getFontSize() { return _output->getFontSize(); }
-  void enableCursor(bool enabled);
+  void enableCursor(bool enabled) {}
   int  handle(int event);
   char *loadResource(const char *fileName);
   void optionsBox(StringList *items);