MarkdownViewer
A simple markdown viewer with image displaying capability.
main.cpp
#include <CtrlLib/CtrlLib.h>
#include <plugin/md/Markdown.h>
#include <plugin/bmp/bmp.h>
#include <plugin/jpg/jpg.h>
using namespace Upp;
struct MarkdownViewer : TopWindow {
RichTextView view;
MenuBar menubar;
Array<QtfRichObject> images;
MarkdownViewer()
{
Title(t_("A simple markdown viewer"));
Sizeable().Zoomable().SetRect(0, 0, 800, 600);
Add(view.SizePos());
AddFrame(menubar);
menubar.Set([this](Bar& menu)
{
menu.Sub(t_("File"), [this](Bar& menu)
{
menu.Add(t_("Open"), [this] { OpenFile(); })
.Key(K_CTRL_O);
menu.Add(t_("Copy to clipboard (as qtf)"),[this] { CopyAsQtf(); })
.Key(K_CTRL_C)
.Enable(!IsNull(~view));
menu.Separator();
menu.Add(t_("Exit"), THISFN(Close))
.Key(K_CTRL_Q);
});
});
ParseFile(GetDataFile("example.md"));
}
void OpenFile()
{
if(String f = SelectFileOpen("*.md"); !f.IsEmpty())
ParseFile(f);
}
void ParseFile(const String& fname)
{
images.Clear();
MarkdownConverter mdc;
mdc.WhenImages = [&](VectorMap<String, String>& imglist)
{
String dir = GetFileDirectory(fname);
Progress pi(t_("Loading images..."), imglist.GetCount());
pi.pi.Percent();
for(int i = 0; i < imglist.GetCount(); i++) {
if(String path = NormalizePath(imglist.GetKey(i), dir); FileExists(path)) { // Image resource paths are expected to be relative to the main markdown file's.
if(Image img = StreamRaster::LoadFileAny(path); !IsNull(img))
imglist[i] << images.Add(CreatePNGObject(img));
if(pi.StepCanceled())
break;
}
}
};
view.SetQTF(mdc.Tables().NoHtml().ToQtf(LoadFile(fname)));
}
void CopyAsQtf()
{
AppendClipboardUnicodeText(~view);
}
};
GUI_APP_MAIN
{
MarkdownViewer().Run();
}
|
