Developer forums (C::B DEVELOPMENT STRICTLY!) > Contributions to C::B
Feature Request: Code Folding by Level Shortcuts
javmss:
on
In November 06, 2009 I have previously posted this topic:
Code::Blocks > User forums > Using Code::Blocks > Feature Request: Code Folding by Level Shortcuts
Since I got no answer, I thing it might be in the wrong place, so I am reposting it here.
I apologise if I'm being inconvenient.
--------------------------------------------------------------------------------
Notepad++ (http://notepad-plus.sourceforge.net/) has a very usefull feature that allows me to selectively fold all given levels by the respective keyboard shortcut.
If I want to fold all "level 3" blocks in a file (C, C++, XML, whatever), I just need to "ALT+3". To unfold, "SHIFT+ALT+3".
I can do this to anything between level 0 to level 9 (the number in my keyboard end on 9, unfortunately).
In Code::Blocks all I have (at least from what I know) is "fold/unfold current block" or "fold/unfold absolutely all existing blocks in my file".
Is there any chance to have a similar feature in Code::Blocks please???
ollydbg:
hi, javmss.
Currently, I don't have much time to help you, but I can give you the direction: the source code of cbeditor.cpp, which is located in:
svn\src\sdk\cbeditor.cpp
the related code was located from line 1924-2024. So, you can simply add some modification to these code, and do the folding function as you wanted.
--- Code: ---void cbEditor::DoFoldAll(int fold)
{
cbAssert(m_pControl);
if (m_SplitType != stNoSplit)
cbAssert(m_pControl2);
cbStyledTextCtrl* ctrl = GetControl();
ctrl->Colourise(0, -1); // the *most* important part!
int count = ctrl->GetLineCount();
for (int i = 0; i <= count; ++i)
DoFoldLine(i, fold);
}
void cbEditor::DoFoldBlockFromLine(int line, int fold)
{
cbAssert(m_pControl);
if (m_SplitType != stNoSplit)
cbAssert(m_pControl2);
cbStyledTextCtrl* ctrl = GetControl();
ctrl->Colourise(0, -1); // the *most* important part!
int i, parent, maxLine, level, UnfoldUpto = line;
bool FoldedInside = false;
parent = ctrl->GetFoldParent(line);
level = ctrl->GetFoldLevel(parent);
/* The following code will check if the child is hidden
* under parent before unfolding it
*/
if (fold == 0)
{
do
{
if (!ctrl->GetFoldExpanded(parent))
{
FoldedInside = true;
UnfoldUpto = parent;
}
if (wxSCI_FOLDLEVELBASE == (level & wxSCI_FOLDLEVELNUMBERMASK))
break;
parent = ctrl->GetFoldParent(parent);
level = ctrl->GetFoldLevel(parent);
}
while (parent != -1);
}
maxLine = ctrl->GetLastChild(line, -1);
for (i = UnfoldUpto; i <= maxLine; ++i)
DoFoldLine(i, fold);
}
bool cbEditor::DoFoldLine(int line, int fold)
{
cbAssert(m_pControl);
if (m_SplitType != stNoSplit)
cbAssert(m_pControl2);
cbStyledTextCtrl* ctrl = GetControl();
int level = ctrl->GetFoldLevel(line);
// The fold parameter is the type of folding action requested
// 0 = Unfold; 1 = Fold; 2 = Toggle folding.
// Check if the line is a header (fold point).
if (level & wxSCI_FOLDLEVELHEADERFLAG)
{
bool IsExpanded = ctrl->GetFoldExpanded(line);
// If a fold/unfold request is issued when the block is already
// folded/unfolded, ignore the request.
if (fold == 0 && IsExpanded) return true;
if (fold == 1 && !IsExpanded) return true;
// Apply the folding level limit only if the current block will be
// folded (that means it's currently expanded), folding level limiter
// must be enabled of course. Unfolding will not be affected.
if (m_pData->mFoldingLimit && IsExpanded)
{
if ((level & wxSCI_FOLDLEVELNUMBERMASK) > (wxSCI_FOLDLEVELBASE + m_pData->mFoldingLimitLevel-1))
return false;
}
ctrl->ToggleFold(line);
return true;
}
return false;
}
void cbEditor::FoldAll()
{
DoFoldAll(1);
}
void cbEditor::UnfoldAll()
{
DoFoldAll(0);
}
void cbEditor::ToggleAllFolds()
{
DoFoldAll(2);
}
--- End code ---
javmss:
I don't have much knowledge about the C::B SDK, so I took a look to the code where you told me and realised I'd do something like this:
--- Code: ---/** Fold/Unfold/Toggle all folds in the givel level.
\param level Level number of folding, starting from 0.
\param fold Type of folding action requested: \n
- 0 = Unfold.
- 1 = Fold.
- 2 = Toggle folding. */
void cbEditor::DoFoldAllAtLevel(int level, int fold)
{
cbAssert(m_pControl);
if (m_SplitType != stNoSplit)
cbAssert(m_pControl2);
cbStyledTextCtrl* ctrl = GetControl();
ctrl->Colourise(0, -1); // the *most* important part!
// Scan all file lines searching for the specified folding level.
int count = ctrl->GetLineCount();
for (int line = 0; line <= count; ++line)
{
int parent = ctrl->GetFoldParent(line);
if ( level == ctrl->GetFoldLevel(parent) ) // Found on fold in "level".
{
int maxLine = ctrl->GetLastChild(line, -1);
for (i = line; i <= maxLine; ++i)
DoFoldLine(i, fold);
}
}
}
--- End code ---
Now I wonder how can I bind this to different shortcuts.
I can suppose that I should create several "FoldAt#( )" methods, but I can't catch how to bind it to the "ALT+#" keys...
I will be looking for it, but I'd be very glad for a clue.
Tanks!
dmoore:
maybe I can incorporate this into my editor tweaks plugin. http://forums.codeblocks.org/index.php/topic,11660.0.html
--- Quote ---Now I wonder how can I bind this to different shortcuts.
--- End quote ---
once you have added menu entries, the keybinder plugin will let you set shortcuts for it
dmoore:
btw, your code doesn't do what you think it does (GetFoldLevel returns a more complicated result). Also, I've no idea why you have the nested loop.
In addition I'm not even sure what you are trying to achieve. I assume you want options to fold all code above a certain fold level? If so, I propose:
--- Code: ---//fold: 0 = unfold, 1 = fold
void EditorTweaks::DoFoldAboveLevel(int level, int fold)
{
cbEditor* ed = Manager::Get()->GetEditorManager()->GetBuiltinActiveEditor();
if(!ed || !ed->GetControl())
return;
level+=wxSCI_FOLDLEVELBASE;
ed->GetControl()->Colourise(0, -1); // the *most* important part!
int count = ed->GetControl()->GetLineCount();
for (int line = 0; line <= count; ++line)
{
int line_level_data = ed->GetControl()->GetFoldLevel(line);
if (!(line_level_data & wxSCI_FOLDLEVELHEADERFLAG))
continue;
int line_level = line_level_data & wxSCI_FOLDLEVELNUMBERMASK;
bool IsExpanded = ed->GetControl()->GetFoldExpanded(line);
// If a fold/unfold request is issued when the block is already
// folded/unfolded, ignore the request.
if(line_level<=level)
if(IsExpanded)
continue;
else
if(fold==0 && IsExpanded || fold ==1 && !IsExpanded)
continue;
ed->GetControl()->ToggleFold(line);
}
}
--- End code ---
this code is now part of editor tweaks:
--- Code: ---svn checkout http://svn.berlios.de/svnroot/repos/cbilplugin/branches/EditorTweaks
--- End code ---
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