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audacity/src/widgets/KeyView.cpp
Daniel Winzen 428f5c8391 Fix 3 uninitialized variable uses
2015-04-30 09:06:37 +02:00

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/**********************************************************************
Audacity: A Digital Audio Editor
KeyView.cpp
*******************************************************************//*!
\class KeyView
\brief Provides multiple views of keyboard shortcuts
*//*********************************************************************/
#include "../Audacity.h"
#include <wx/defs.h>
#include <wx/settings.h>
#include <wx/vlbox.h>
#include "../AColor.h"
#include "../ShuttleGui.h"
#include "../commands/CommandManager.h"
#include "../commands/Keyboard.h"
#include "KeyView.h"
#include <wx/arrimpl.cpp>
// Various drawing constants
#define KV_BITMAP_SIZE 16
#define KV_LEFT_MARGIN 2
#define KV_COLUMN_SPACER 5
#define KV_VSCROLL_WIDTH 16 /* figure this out automatically? */
// Define the KeyNode arrays
WX_DEFINE_OBJARRAY(KeyNodeArray);
WX_DEFINE_OBJARRAY(KeyNodeArrayPtr);
// Define the event table
BEGIN_EVENT_TABLE(KeyView, wxVListBox)
EVT_LEFT_DOWN(KeyView::OnLeftDown)
EVT_KEY_DOWN(KeyView::OnKeyDown)
EVT_LISTBOX(wxID_ANY, KeyView::OnSelected)
EVT_SET_FOCUS(KeyView::OnSetFocus)
EVT_KILL_FOCUS(KeyView::OnKillFocus)
EVT_SIZE(KeyView::OnSize)
EVT_SCROLLWIN(KeyView::OnScroll)
END_EVENT_TABLE();
// ============================================================================
// KeyView class
// ============================================================================
KeyView::KeyView(wxWindow *parent,
wxWindowID id,
const wxPoint & pos,
const wxSize & size)
: wxVListBox(parent, id, pos, size, wxBORDER_THEME),
mOpen(NULL),
mClosed(NULL),
mScrollX(0),
mWidth(0)
{
#if wxUSE_ACCESSIBILITY
// Create and set accessibility object
mAx = new KeyViewAx(this);
SetAccessible(mAx);
#endif
// Create the device context
wxMemoryDC dc;
// Create the open/expanded bitmap
mOpen = new wxBitmap(16, 16);
dc.SelectObject(*mOpen);
dc.SetBrush(*wxWHITE_BRUSH);
dc.SetPen(*wxWHITE_PEN);
dc.DrawRectangle(0, 0, 16, 16);
dc.SetPen(*wxBLACK_PEN);
dc.DrawRectangle(3, 4, 9, 9);
dc.DrawLine(5, 8, 10, 8);
dc.SelectObject(wxNullBitmap);
// Create the closed/collapsed bitmap
mClosed = new wxBitmap(16, 16);
dc.SelectObject(*mClosed);
dc.SetBrush(*wxWHITE_BRUSH);
dc.SetPen(*wxWHITE_PEN);
dc.DrawRectangle(0, 0, 16, 16);
dc.SetPen(*wxBLACK_PEN);
dc.DrawRectangle(3, 4, 9, 9);
dc.DrawLine(7, 6, 7, 11);
dc.DrawLine(5, 8, 10, 8);
dc.SelectObject(wxNullBitmap);
// The default view
mViewType = ViewByTree;
// Calculate measurements used for columns and scrolling
RecalcExtents();
}
KeyView::~KeyView()
{
// Cleanup
if (mOpen)
{
delete mOpen;
}
if (mClosed)
{
delete mClosed;
}
}
//
// Returns the index of the selected node
//
int
KeyView::GetSelected() const
{
return LineToIndex(GetSelection());
}
//
// Returns the name of the control
//
wxString
KeyView::GetName() const
{
// Just forward request
return wxVListBox::GetName();
}
//
// Returns the label for the given index
//
wxString
KeyView::GetLabel(int index) const
{
// Make sure index is valid
if (index < 0 || index >= (int) mNodes.GetCount())
{
wxASSERT(false);
return wxEmptyString;
}
return mNodes[index].label;
}
//
// Returns the prefix (if available) prepended to the label for the given index
//
wxString
KeyView::GetFullLabel(int index) const
{
// Make sure index is valid
if (index < 0 || index >= (int) mNodes.GetCount())
{
wxASSERT(false);
return wxEmptyString;
}
// Cache the node and label
KeyNode & node = mNodes[index];
wxString label = node.label;
// Prepend the prefix if available
if (!node.prefix.IsEmpty())
{
label = node.prefix + wxT(" - ") + label;
}
return label;
}
//
// Returns the index for the given name
//
int
KeyView::GetIndexByName(const wxString & name) const
{
int cnt = (int) mNodes.GetCount();
// Search the nodes for the key
for (int i = 0; i < cnt; i++)
{
if (name.CmpNoCase(mNodes[i].name) == 0)
{
return mNodes[i].index;
}
}
return wxNOT_FOUND;
}
//
// Returns the command manager name for the given index
//
wxString
KeyView::GetName(int index) const
{
// Make sure index is valid
if (index < 0 || index >= (int) mNodes.GetCount())
{
wxASSERT(false);
return wxEmptyString;
}
return mNodes[index].name;
}
//
// Returns the command manager index for the given key combination
//
wxString
KeyView::GetNameByKey(const wxString & key) const
{
int cnt = (int) mNodes.GetCount();
// Search the nodes for the key
for (int i = 0; i < cnt; i++)
{
if (key.CmpNoCase(mNodes[i].key) == 0)
{
return mNodes[i].name;
}
}
return wxEmptyString;
}
//
// Returns the index for the given key
//
int
KeyView::GetIndexByKey(const wxString & key) const
{
int cnt = (int) mNodes.GetCount();
// Search the nodes for the key
for (int i = 0; i < cnt; i++)
{
if (key.CmpNoCase(mNodes[i].key) == 0)
{
return mNodes[i].index;
}
}
return wxNOT_FOUND;
}
//
// Returns the key for the given index
//
wxString
KeyView::GetKey(int index) const
{
// Make sure index is valid
if (index < 0 || index >= (int) mNodes.GetCount())
{
wxASSERT(false);
return wxEmptyString;
}
return mNodes[index].key;
}
//
// Use to determine if a key can be assigned to the given index
//
bool
KeyView::CanSetKey(int index) const
{
// Make sure index is valid
if (index < 0 || index >= (int) mNodes.GetCount())
{
wxASSERT(false);
return false;
}
// Parents can't be assigned keys
return !mNodes[index].isparent;
}
//
// Sets the key for the given index
//
bool
KeyView::SetKey(int index, const wxString & key)
{
// Make sure index is valid
if (index < 0 || index >= (int) mNodes.GetCount())
{
wxASSERT(false);
return false;
}
// Cache the node
KeyNode & node = mNodes[index];
// Do not allow setting keys on branches
if (node.isparent)
{
return false;
}
// Set the new key
node.key = key;
// Check to see if the key column needs to be expanded
int x, y;
GetTextExtent(node.key, &x, &y);
if (x > mKeyWidth || y > mLineHeight)
{
// New key is wider than column so recalc extents (will refresh view)
RecalcExtents();
return true;
}
// Refresh the view lines
RefreshAll();
return true;
}
//
// Sets the key for the given name
//
bool
KeyView::SetKeyByName(const wxString & name, const wxString & key)
{
int index = GetIndexByName(name);
// Bail is the name wasn't found
if (index == wxNOT_FOUND)
{
return false;
}
// Go set the key
return SetKey(index, key);
}
//
// Sets the view type
//
void
KeyView::SetView(ViewByType type)
{
int index = LineToIndex(GetSelection());
// Handle an existing selection
if (index != wxNOT_FOUND)
{
// Cache the currently selected node
KeyNode & node = mNodes[index];
// Expand branches if switching to Tree view and a line
// is currently selected
if (type == ViewByTree)
{
// Cache the node's depth
int depth = node.depth;
// Search for its parents, setting each one as open
for (int i = node.index - 1; i >= 0 && depth > 1; i--)
{
if (mNodes[i].depth < depth)
{
mNodes[i].isopen = true;
depth = mNodes[i].depth;
}
}
}
}
// Unselect any currently selected line...do even if none selected
SelectNode(-1);
// Save new type
mViewType = type;
// Refresh the view lines
RefreshLines();
// Reselect old node (if possible)
if (index != wxNOT_FOUND)
{
SelectNode(index);
}
return;
}
//
// Sets the filter
//
void
KeyView::SetFilter(const wxString & filter)
{
int index = LineToIndex(GetSelection());
// Unselect any currently selected line...do even if none selected
SelectNode(-1);
// Save the filter
mFilter = filter.Lower();
// Refresh the view lines
RefreshLines();
// Reselect old node (if possible)
if (index != wxNOT_FOUND)
{
SelectNode(index);
}
}
//
// Expand all branches
//
void
KeyView::ExpandAll()
{
int cnt = (int) mNodes.GetCount();
// Set all parent nodes to open
for (int i = 0; i < cnt; i++)
{
KeyNode & node = mNodes[i];
if (node.isparent)
{
node.isopen = true;
}
}
RefreshLines();
}
//
// Collapse all branches
//
void
KeyView::CollapseAll()
{
int cnt = (int) mNodes.GetCount();
// Set all parent nodes to closed
for (int i = 0; i < cnt; i++)
{
KeyNode & node = mNodes[i];
if (node.isparent)
{
node.isopen = false;
}
}
RefreshLines();
}
//
// Recalculate the measurements used for columns and scrolling
//
void
KeyView::RecalcExtents()
{
// Reset
mLineHeight = 0;
mCommandWidth = 0;
mKeyWidth = 0;
// Examine all nodes
int cnt = (int) mNodes.GetCount();
for (int i = 0; i < cnt; i++)
{
KeyNode & node = mNodes[i];
int x, y;
if (node.iscat)
{
// Measure the category
GetTextExtent(node.category, &x, &y);
}
else if (node.ispfx)
{
// Measure the prefix
GetTextExtent(node.prefix, &x, &y);
}
else
{
// Measure the key
GetTextExtent(node.key, &x, &y);
mLineHeight = wxMax(mLineHeight, y);
mKeyWidth = wxMax(mKeyWidth, x);
// Prepend prefix for view types other than tree
wxString label = node.label;
if (mViewType != ViewByTree && !node.prefix.IsEmpty())
{
label = node.prefix + wxT(" - ") + label;
}
// Measure the label
GetTextExtent(label, &x, &y);
}
// Finish calc for command column
mLineHeight = wxMax(mLineHeight, y);
mCommandWidth = wxMax(mCommandWidth, x);
}
// Update horizontal scrollbar
UpdateHScroll();
}
//
// Update the horizontal scrollbar or remove it if not needed
//
void
KeyView::UpdateHScroll()
{
// Get the internal dimensions of the view
wxRect r = GetClientRect();
// Calculate the full line width
mWidth = KV_LEFT_MARGIN +
mCommandWidth +
KV_COLUMN_SPACER +
mKeyWidth +
KV_VSCROLL_WIDTH;
// Retrieve the current horizontal scroll amount
mScrollX = GetScrollPos(wxHORIZONTAL);
if (mWidth <= r.GetWidth())
{
// Remove the scrollbar if it will fit within client width
SetScrollbar(wxHORIZONTAL, 0, 0, 0);
}
else
{
// Set scrollbar metrics
SetScrollbar(wxHORIZONTAL, mScrollX, r.GetWidth(), mWidth);
}
// Refresh the entire view
RefreshAll();
}
//
// Process a new set of bindings
//
void
KeyView::RefreshBindings(const wxArrayString & names,
const wxArrayString & categories,
const wxArrayString & prefixes,
const wxArrayString & labels,
const wxArrayString & keys)
{
bool firsttime = mNodes.GetCount() == 0;
// Start clean
mNodes.Clear();
// Same as in RecalcExtents() but do it inline
mLineHeight = 0;
mKeyWidth = 0;
mCommandWidth = 0;
wxString lastcat;
wxString lastpfx;
int nodecnt = 0;
int depth = 1;
bool incat = false;
bool inpfx = false;
// Examine all names...all arrays passed have the same indexes
int cnt = (int) names.GetCount();
for (int i = 0; i < cnt; i++)
{
wxString name = names[i];
int x, y;
// Remove any menu code from the category and prefix
wxString cat = wxMenuItem::GetLabelText(categories[i]);
wxString pfx = wxMenuItem::GetLabelText(prefixes[i]);
// Append "Menu" this node is for a menu title
if (cat != wxT("Command"))
{
cat.Append(wxT(" "));
cat += _("Menu");
}
// Process a new category
if (cat != lastcat)
{
// A new category always finishes any current subtree
if (inpfx)
{
// Back to category level
depth--;
inpfx = false;
}
// Only time this is not true is during the first iteration
if (incat)
{
// Back to root level
depth--;
incat = false;
}
// Remember for next iteration
lastcat = cat;
// Add a new category node
if (cat != wxEmptyString)
{
KeyNode node;
// Fill in the node info
node.name = wxEmptyString; // don't associate branches with a command
node.category = cat;
node.prefix = pfx;
node.label = cat;
node.index = nodecnt++;
node.iscat = true;
node.isparent = true;
node.depth = depth++;
// Add it to the tree
mNodes.Add(node);
incat = true;
// Measure category
GetTextExtent(cat, &x, &y);
mLineHeight = wxMax(mLineHeight, y);
mCommandWidth = wxMax(mCommandWidth, x);
}
}
// Process a new prefix
if (pfx != lastpfx)
{
// Done with prefix branch
if (inpfx)
{
depth--;
inpfx = false;
}
// Remember for next iteration
lastpfx = pfx;
// Add a new prefix node
if (pfx != wxEmptyString)
{
KeyNode node;
// Fill in the node info
node.name = wxEmptyString; // don't associate branches with a command
node.category = cat;
node.prefix = pfx;
node.label = pfx;
node.index = nodecnt++;
node.ispfx = true;
node.isparent = true;
node.depth = depth++;
// Add it to the tree
mNodes.Add(node);
inpfx = true;
}
}
// Add the key entry
KeyNode node;
node.category = cat;
node.prefix = pfx;
// Labels for undo and redo change according to the last command
// which can be undone/redone, so give them a special check in order
// not to confuse users
if (name == wxT("Undo"))
{
node.label = _("Undo");
}
else if (name == wxT("Redo"))
{
node.label = _("Redo");
}
else
{
// Strip any menu codes from label
node.label = wxMenuItem::GetLabelText(labels[i].BeforeFirst(wxT('\t')));
}
// Fill in remaining info
node.name = name;
node.key = KeyStringDisplay(keys[i]);
node.index = nodecnt++;
node.depth = depth;
// Add it to the tree
mNodes.Add(node);
// Measure key
GetTextExtent(node.key, &x, &y);
mLineHeight = wxMax(mLineHeight, y);
mKeyWidth = wxMax(mKeyWidth, x);
// Prepend prefix for all view types to determine maximum
// column widths
wxString label = node.label;
if (!node.prefix.IsEmpty())
{
label = node.prefix + wxT(" - ") + label;
}
// Measure label
GetTextExtent(label, &x, &y);
mLineHeight = wxMax(mLineHeight, y);
mCommandWidth = wxMax(mCommandWidth, x);
}
#if 0
// For debugging
for (int j = 0; j < mNodes.GetCount(); j++)
{
KeyNode & node = mNodes[j];
wxLogDebug(wxT("NODE line %4d index %4d depth %1d open %1d parent %1d cat %1d pfx %1d name %s STR %s | %s | %s"),
node.line,
node.index,
node.depth,
node.isopen,
node.isparent,
node.iscat,
node.ispfx,
node.name.c_str(),
node.category.c_str(),
node.prefix.c_str(),
node.label.c_str());
}
#endif
// Update horizontal scrollbar
UpdateHScroll();
// Refresh the view lines
RefreshLines();
// Set the selected node if this was the first time through
if (firsttime)
{
SelectNode(LineToIndex(0));
}
}
//
// Refresh the list of lines within the current view
//
void
KeyView::RefreshLines()
{
int cnt = (int) mNodes.GetCount();
int linecnt = 0;
mLines.Empty();
// Process a filter if one is set
if (!mFilter.IsEmpty())
{
// Examine all nodes
for (int i = 0; i < cnt; i++)
{
KeyNode & node = mNodes[i];
// Reset line number
node.line = wxNOT_FOUND;
// Search columns based on view type
wxString searchit;
switch (mViewType)
{
// The x"01" separator is used to prevent finding a
// match comprising the end of the label and beginning
// of the key. It was chosen since it's not very likely
// to appear in the filter itself.
case ViewByTree:
searchit = node.label.Lower() +
wxT("\01x") +
node.key.Lower();
break;
case ViewByName:
searchit = node.label.Lower();
break;
case ViewByKey:
searchit = node.key.Lower();
break;
}
if (searchit.Find(mFilter) == wxNOT_FOUND)
{
// Not found so continue to next node
continue;
}
// For the Key View, if the filter is a single character,
// then it has to be the last character in the searchit string,
// and be preceded by nothing or +.
if ((mViewType == ViewByKey) &&
(mFilter.Len() == 1) &&
(!mFilter.IsSameAs(searchit.Last()) ||
((searchit.Len() > 1) &&
((wxString)(searchit.GetChar(searchit.Len() - 2)) != wxT("+")))))
{
// Not suitable so continue to next node
continue;
}
// For tree view, we must make sure all parent nodes are included
// whether they match the filter or not.
if (mViewType == ViewByTree)
{
KeyNodeArrayPtr queue;
int depth = node.depth;
// This node is a category or prefix node, so always mark them
// as open.
//
// What this is really doing is resolving a situation where the
// the filter matches a parent node and nothing underneath. In
// this case, the node would never be marked as open.
if (node.isparent)
{
node.isopen = true;
}
// Examine siblings until a parent is found.
for (int j = node.index - 1; j >= 0 && depth > 0; j--)
{
// Found a parent
if (mNodes[j].depth < depth)
{
// Examine all previously added nodes to see if this nodes
// ancestors need to be added prior to adding this node.
bool found = false;
for (int k = (int) mLines.GetCount() - 1; k >= 0; k--)
{
// The node indexes match, so we've found the parent of the
// child node.
if (mLines[k]->index == mNodes[j].index)
{
found = true;
break;
}
}
// The parent wasn't found so remember it for later
// addition. Can't add directory to mLines here since
// they will wind up in reverse order.
if (!found)
{
queue.Add(&mNodes[j]);
}
// Traverse up the tree
depth = mNodes[j].depth;
}
}
// Add any queues nodes to list. This will all be
// parent nodes, so mark them as open.
for (int j = (int) queue.GetCount() - 1; j >= 0; j--)
{
queue[j]->isopen = true;
queue[j]->line = linecnt++;
mLines.Add(queue[j]);
}
}
// Finally add the child node
node.line = linecnt++;
mLines.Add(&node);
}
}
else
{
// Examine all nodes - non-filtered
for (int i = 0; i < cnt; i++)
{
KeyNode & node = mNodes[i];
// Reset line number
node.line = wxNOT_FOUND;
// Node is either a category or prefix
if (node.isparent)
{
// Only need to do this for tree views
if (mViewType != ViewByTree)
{
continue;
}
// Add the node
node.line = linecnt++;
mLines.Add(&node);
// If this node is not open, then skip all of it's decendants
if (!node.isopen)
{
bool iscat = node.iscat;
bool ispfx = node.ispfx;
// Skip nodes until we find a node that has a different
// category or prefix
while (i < cnt)
{
KeyNode & skip = mNodes[i];
if ((iscat && skip.category != node.category) ||
(ispfx && skip.prefix != node.prefix))
{
break;
}
// Bump to next node
i++;
}
// Index is pointing to the node that was different or
// past the end, so back off to last node of this branch.
i--;
}
continue;
}
// Add child node to list
node.line = linecnt++;
mLines.Add(&node);
}
}
// Sort list based on type
switch (mViewType)
{
case ViewByTree:
mLines.Sort(CmpKeyNodeByTree);
break;
case ViewByName:
mLines.Sort(CmpKeyNodeByName);
break;
case ViewByKey:
mLines.Sort(CmpKeyNodeByKey);
break;
}
// Now, reassign the line numbers
for (int i = 0; i < (int) mLines.GetCount(); i++)
{
mLines[i]->line = i;
}
#if 0
// For debugging
for (int j = 0; j < mLines.GetCount(); j++)
{
KeyNode & node = *mLines[j];
wxLogDebug(wxT("LINE line %4d index %4d depth %1d open %1d parent %1d cat %1d pfx %1d name %s STR %s | %s | %s"),
node.line,
node.index,
node.depth,
node.isopen,
node.isparent,
node.iscat,
node.ispfx,
node.name.c_str(),
node.category.c_str(),
node.prefix.c_str(),
node.label.c_str());
}
#endif
// Tell listbox the new count and refresh the entire view
SetItemCount(mLines.GetCount());
RefreshAll();
#if wxUSE_ACCESSIBILITY
// Let accessibility know that the list has changed
mAx->ListUpdated();
#endif
}
//
// Select a node
//
// Parameter can be wxNOT_FOUND to clear selection
//
void
KeyView::SelectNode(int index)
{
int line = IndexToLine(index);
// Tell the listbox to select the line
SetSelection(line);
#if wxUSE_ACCESSIBILITY
// And accessibility
mAx->SetCurrentLine(line);
#endif
// Always send an event to let parent know of selection change
//
// Must do this ourselves becuase we want to send notifications
// even if there isn't an item selected and SendSelectedEvent()
// doesn't allow sending an event for indexes not in the listbox.
wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, GetId());
event.SetEventObject(this);
event.SetInt(line);
(void)GetEventHandler()->ProcessEvent(event);
}
//
// Converts a line index to a node index
//
int
KeyView::LineToIndex(int line) const
{
if (line < 0 || line >= (int) mLines.GetCount())
{
return wxNOT_FOUND;
}
return mLines[line]->index;
}
//
// Converts a node index to a line index
//
int
KeyView::IndexToLine(int index) const
{
if (index < 0 || index >= (int) mNodes.GetCount())
{
return wxNOT_FOUND;
}
return mNodes[index].line;
}
//
// Draw the background for a given line
//
// This is called by the listbox when it needs to redraw the view.
//
void
KeyView::OnDrawBackground(wxDC & dc, const wxRect & rect, size_t line) const
{
const KeyNode *node = mLines[line];
wxRect r = rect;
wxCoord indent = 0;
// When in tree view mode, each younger branch gets indented by the
// width of the open/close bitmaps
if (mViewType == ViewByTree)
{
indent += node->depth * KV_BITMAP_SIZE;
}
// Offset left side by the indentation (if any) and scroll amounts
r.x = indent - mScrollX;
// If the line width is less than the client width, then we want to
// extend the background to the right edge of the client view. Otherwise,
// go all the way to the end of the line width...this will draw past the
// right edge, but that's what we want.
r.width = wxMax(mWidth, r.width);
// Selected lines get a solid background
if (IsSelected(line))
{
if (FindFocus() == this)
{
// Focused lines get highlighted background
dc.SetBrush(wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT)));
AColor::DrawFocus(dc, r);
dc.DrawRectangle(r);
}
else
{
// Non ocused lines get a light background
dc.SetBrush(wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE)));
dc.SetPen(*wxTRANSPARENT_PEN);
dc.DrawRectangle(r);
}
}
else
{
// Non-selected lines get a thin bottom border
dc.SetPen(wxColour(240, 240, 240));
dc.DrawLine(r.GetLeft(), r.GetBottom(), r.GetRight(), r.GetBottom());
}
}
//
// Draw a line
//
// This is called by the listbox when it needs to redraw the view.
//
void
KeyView::OnDrawItem(wxDC & dc, const wxRect & rect, size_t line) const
{
const KeyNode *node = mLines[line];
wxString label = node->label;
// Make sure the DC has a valid font
dc.SetFont(GetFont());
// Set the text color based on selection and focus
if (IsSelected(line) && FindFocus() == this)
{
dc.SetTextForeground(wxSystemSettings::GetColour(wxSYS_COLOUR_LISTBOXHIGHLIGHTTEXT));
}
else
{
dc.SetTextForeground(wxSystemSettings::GetColour(wxSYS_COLOUR_LISTBOXTEXT));
}
// Tree views get bitmaps
if (mViewType == ViewByTree)
{
// Adjust left edge to account for scrolling
wxCoord x = rect.x - mScrollX;
if (node->iscat)
{
// Draw categories bitmap at left edge
dc.DrawBitmap(node->isopen ? *mOpen : *mClosed, x, rect.y);
}
else if (node->ispfx)
{
// Draw prefix bitmap to the right of the category bitmap
dc.DrawBitmap(node->isopen ? *mOpen : *mClosed, x + KV_BITMAP_SIZE, rect.y);
}
// Indent text
x += KV_LEFT_MARGIN;
// Draw the command and key columns
dc.DrawText(label, x + node->depth * KV_BITMAP_SIZE, rect.y);
dc.DrawText(node->key, x + mCommandWidth + KV_COLUMN_SPACER, rect.y);
}
else
{
// Adjust left edge by margin and account for scrolling
wxCoord x = rect.x + KV_LEFT_MARGIN - mScrollX;
// Prepend prefix if available
if (!node->prefix.IsEmpty())
{
label = node->prefix + wxT(" - ") + label;
}
// Swap the columns based on view type
if(mViewType == ViewByName)
{
// Draw command column and then key column
dc.DrawText(label, x, rect.y);
dc.DrawText(node->key, x + mCommandWidth + KV_COLUMN_SPACER, rect.y);
}
else if(mViewType == ViewByKey)
{
// Draw key columnd and then command column
dc.DrawText(node->key, x, rect.y);
dc.DrawText(label, x + mKeyWidth + KV_COLUMN_SPACER, rect.y);
}
}
return;
}
//
// Provide the height of the given line
//
// This is called by the listbox when it needs to redraw the view.
//
wxCoord
KeyView::OnMeasureItem(size_t WXUNUSED(line)) const
{
// All lines are of equal height
//
// (add a magic 1 for decenders...looks better...not required)
return mLineHeight + 1;
}
//
// Handle the wxEVT_LISTBOX event
//
void
KeyView::OnSelected(wxCommandEvent & event)
{
// Allow further processing
event.Skip();
#if wxUSE_ACCESSIBILITY
// Tell accessibility of the change
mAx->SetCurrentLine(event.GetInt());
#endif
}
//
// Handle the wxEVT_SET_FOCUS event
//
void
KeyView::OnSetFocus(wxFocusEvent & event)
{
// Allow further processing
event.Skip();
// Refresh the selected line to pull in any changes while
// focus was away...like when setting a new key value. This
// will also refresh the visual (highlighted) state.
if (GetSelection() != wxNOT_FOUND)
{
#if wxCHECK_VERSION(3,0,0)
RefreshRow(GetSelection());
#else
RefreshLine(GetSelection());
#endif
}
#if wxUSE_ACCESSIBILITY
// Tell accessibility of the change
mAx->SetCurrentLine(GetSelection());
#endif
}
//
// Handle the wxEVT_KILL_FOCUS event
//
void
KeyView::OnKillFocus(wxFocusEvent & event)
{
// Allow further processing
event.Skip();
// Refresh the selected line to adjust visual highlighting.
if (GetSelection() != wxNOT_FOUND)
{
#if wxCHECK_VERSION(3,0,0)
RefreshRow(GetSelection());
#else
RefreshLine(GetSelection());
#endif
}
}
//
// Handle the wxEVT_SIZE event
//
void
KeyView::OnSize(wxSizeEvent & WXUNUSED(event))
{
// Update horizontal scrollbar
UpdateHScroll();
}
//
// Handle the wxEVT_SCROLL event
//
void
KeyView::OnScroll(wxScrollWinEvent & event)
{
// We only care bout the horizontal scrollbar.
if (event.GetOrientation() != wxHORIZONTAL)
{
// Allow further processing
event.Skip();
return;
}
// Get new scroll position and scroll the view
mScrollX = event.GetPosition();
SetScrollPos(wxHORIZONTAL, mScrollX);
// Refresh the entire view
RefreshAll();
}
//
// Handle the wxEVT_KEY_DOWN event
//
void
KeyView::OnKeyDown(wxKeyEvent & event)
{
int line = GetSelection();
int keycode = event.GetKeyCode();
switch (keycode)
{
// The LEFT key moves selection to parent or collapses selected
// node if it is expanded.
case WXK_LEFT:
{
// Nothing selected...nothing to do
if (line == wxNOT_FOUND)
{
// Allow further processing
event.Skip();
break;
}
KeyNode *node = mLines[line];
// Collapse the node if it is open
if (node->isopen)
{
// No longer open
node->isopen = false;
// Don't want the view to scroll vertically, so remember the current
// top line.
size_t topline = GetVisibleBegin();
// Refresh the view now that the number of lines have changed
RefreshLines();
// Reset the original top line
#if wxCHECK_VERSION(3,0,0)
ScrollToRow(topline);
#else
ScrollToLine(topline);
#endif
// And make sure current line is still selected
SelectNode(LineToIndex(line));
}
else
{
// Move selection to the parent of this node
for (int i = line - 1; i >= 0; i--)
{
// Found the parent
if (mLines[i]->depth < node->depth)
{
// So select it
SelectNode(LineToIndex(i));
break;
}
}
}
// Further processing of the event is not wanted
// (we didn't call event.Skip()
}
break;
// The RIGHT key moves the selection to the first child or expands
// the node if it is a parent.
case WXK_RIGHT:
{
// Nothing selected...nothing to do
if (line == wxNOT_FOUND)
{
// Allow further processing
event.Skip();
break;
}
KeyNode *node = mLines[line];
// Only want parent nodes
if (node->isparent)
{
// It is open so move select to first child
if (node->isopen)
{
// But only if there is one
if (line < (int) mLines.GetCount() - 1)
{
SelectNode(LineToIndex(line + 1));
}
}
else
{
// Node is now open
node->isopen = true;
// Don't want the view to scroll vertically, so remember the current
// top line.
size_t topline = GetVisibleBegin();
// Refresh the view now that the number of lines have changed
RefreshLines();
// Reset the original top line
#if wxCHECK_VERSION(3,0,0)
ScrollToRow(topline);
#else
ScrollToLine(topline);
#endif
// And make sure current line is still selected
SelectNode(LineToIndex(line));
}
}
// Further processing of the event is not wanted
// (we didn't call event.Skip()
}
break;
// Move selection to next node whose 1st character matches
// the keycode
default:
{
int cnt = (int) mLines.GetCount();
bool found = false;
// Search the entire list if none is currently selected
if (line == wxNOT_FOUND)
{
line = cnt;
}
else
{
// Search from the node following the current one
for (int i = line + 1; i < cnt; i++)
{
wxString label;
// Get the string to search based on view type
if (mViewType == ViewByTree)
{
label = GetLabel(LineToIndex(i));
}
else if (mViewType == ViewByName)
{
label = GetFullLabel(LineToIndex(i));
}
else if (mViewType == ViewByKey)
{
label = GetKey(LineToIndex(i));
}
// Move selection if they match
if (label.Left(1).IsSameAs(keycode, false))
{
SelectNode(LineToIndex(i));
found = true;
break;
}
}
}
// A match wasn't found
if (!found)
{
// So scan from the start of the list to the current node
for (int i = 0; i < line; i++)
{
wxString label;
// Get the string to search based on view type
if (mViewType == ViewByTree)
{
label = GetLabel(LineToIndex(i));
}
else if (mViewType == ViewByName)
{
label = GetFullLabel(LineToIndex(i));
}
else if (mViewType == ViewByKey)
{
label = GetKey(LineToIndex(i));
}
// Move selection if they match
if (label.Left(1).IsSameAs(keycode, false))
{
SelectNode(LineToIndex(i));
found = true;
break;
}
}
}
// A node wasn't found so allow further processing
if (!found) {
event.Skip();
}
// Otherwise, further processing of the event is not wanted
// (we didn't call event.Skip()
}
}
}
//
// Handle the wxEVT_LEFT_DOWN event
//
void
KeyView::OnLeftDown(wxMouseEvent & event)
{
// Only check if for tree view
if (mViewType != ViewByTree)
{
// Allow further processing (important for focus handling)
event.Skip();
return;
}
// Get the mouse position when the button was pressed
wxPoint pos = event.GetPosition();
// And see if it was on a line within the view
int line = HitTest(pos);
// It was on a line
if (line != wxNOT_FOUND)
{
KeyNode *node = mLines[line];
// Toggle the open state if this is a parent node
if (node->isparent)
{
// Toggle state
node->isopen = !node->isopen;
// Don't want the view to scroll vertically, so remember the current
// top line.
size_t topline = GetVisibleBegin();
// Refresh the view now that the number of lines have changed
RefreshLines();
// Reset the original top line
#if wxCHECK_VERSION(3,0,0)
ScrollToRow(topline);
#else
ScrollToLine(topline);
#endif
// And make sure current line is still selected
SelectNode(LineToIndex(line));
}
}
// Allow further processing (important for focus handling)
event.Skip();
}
//
// Sort compare function for tree view
//
// We want to leave the "menu" nodes alone as they are in the
// order as they appear in the menus. But, we want to sort the
// "command" nodes.
//
// To accomplish this, we prepend each label with it's line number
// (in hex) for "menu" nodes. This ensures they will remain in
// their original order.
//
// We prefix all "command" nodes with "ffffffff" (highest hex value)
// to allow the sort to reorder them as needed.
//
int
KeyView::CmpKeyNodeByTree(KeyNode ***n1, KeyNode ***n2)
{
KeyNode *t1 = (**n1);
KeyNode *t2 = (**n2);
wxString k1 = t1->label;
wxString k2 = t2->label;
// This is a "command" node if its category is "Command"
// and it is a child of the "Command" category. This latter
// test ensures that the "Command" parent will be handled
// as a "menu" node and remain at the bottom of the list.
if (t1->category == _("Command") && !t1->isparent)
{
// A "command" node, so prepend the highest hex value
k1.Printf(wxT("ffffffff%s"), t1->label.c_str());
}
else
{
// A "menu" node, so prepend the line number
k1.Printf(wxT("%08x%s"), (unsigned int) t1->line, t1->label.c_str());
}
// See above for explanation
if (t2->category == _("Command") && !t2->isparent)
{
// A "command" node, so prepend the highest hex value
k2.Printf(wxT("ffffffff%s"), t2->label.c_str());
}
else
{
// A "menu" node, so prepend the line number
k2.Printf(wxT("%08x%s"), (unsigned int) t2->line, t2->label.c_str());
}
// See wxWidgets documentation for explanation of comparison results.
// These will produce an ascending order.
if (k1 < k2)
{
return -1;
}
if (k1 > k2)
{
return 1;
}
return 0;
}
//
// Sort compare function for command view
//
// Nothing special here, just a standard ascending sort.
//
int
KeyView::CmpKeyNodeByName(KeyNode ***n1, KeyNode ***n2)
{
KeyNode *t1 = (**n1);
KeyNode *t2 = (**n2);
wxString k1 = t1->label;
wxString k2 = t2->label;
// Prepend prefix if available
if (!t1->prefix.IsEmpty())
{
k1 = t1->prefix + wxT(" - ") + k1;
}
// Prepend prefix if available
if (!t2->prefix.IsEmpty())
{
k2 = t2->prefix + wxT(" - ") + k2;
}
// See wxWidgets documentation for explanation of comparison results.
// These will produce an ascending order.
if (k1 < k2)
{
return -1;
}
if (k1 > k2)
{
return 1;
}
return 0;
}
//
// Sort compare function for key view
//
// We want all nodes with key assignments to appear in ascending order
// at the top of the list and all nodes without assignment to appear in
// ascending order at the bottom of the list.
//
// We accomplish this by by prefixing all non-assigned entries with 0xff.
// This will force them to the end, but still allow them to be sorted in
// ascending order.
//
// The assigned entries simply get sorted as normal.
//
int
KeyView::CmpKeyNodeByKey(KeyNode ***n1, KeyNode ***n2)
{
KeyNode *t1 = (**n1);
KeyNode *t2 = (**n2);
wxString k1 = t1->key;
wxString k2 = t2->key;
// Left node is unassigned, so prefix it
if(k1.IsEmpty())
{
k1 = wxT("\xff");
}
// Right node is unassigned, so prefix it
if(k2.IsEmpty())
{
k2 = wxT("\xff");
}
// Add prefix if available
if (!t1->prefix.IsEmpty())
{
k1 += t1->prefix + wxT(" - ");
}
// Add prefix if available
if (!t2->prefix.IsEmpty())
{
k2 += t2->prefix + wxT(" - ");
}
// Add labels
k1 += t1->label;
k2 += t2->label;
// See wxWidgets documentation for explanation of comparison results.
// These will produce an ascending order.
if (k1 < k2)
{
return -1;
}
if (k1 > k2)
{
return 1;
}
return 0;
}
#if wxUSE_ACCESSIBILITY
//
// Return parenthood state of line
//
bool
KeyView::HasChildren(int line)
{
// Make sure line is valid
if (line < 0 || line >= (int) mLines.GetCount())
{
wxASSERT(false);
return false;
}
return mLines[line]->isparent;
}
//
// Returns espanded/collapsed state of line
//
bool
KeyView::IsExpanded(int line)
{
// Make sure line is valid
if (line < 0 || line >= (int) mLines.GetCount())
{
wxASSERT(false);
return false;
}
return mLines[line]->isopen;
}
//
// Returns the height of the line
//
wxCoord
KeyView::GetLineHeight(int line)
{
// Make sure line is valid
if (line < 0 || line >= (int) mLines.GetCount())
{
wxASSERT(false);
return 0;
}
#if wxCHECK_VERSION(3,0,0)
return OnGetRowHeight(line);
#else
return OnGetLineHeight(line);
#endif
}
//
// Returns the value to be presented to accessibility
//
// Currently, the command and key are both provided.
//
wxString
KeyView::GetValue(int line)
{
// Make sure line is valid
if (line < 0 || line >= (int) mLines.GetCount())
{
wxASSERT(false);
return wxEmptyString;
}
int index = LineToIndex(line);
// Get the label and key values
wxString value;
if (mViewType == ViewByTree)
{
value = GetLabel(index);
}
else
{
value = GetFullLabel(index);
}
wxString key = GetKey(index);
// Add the key if it isn't empty
if (!key.IsEmpty())
{
if (mViewType == ViewByKey)
{
value = key + wxT(" ") + value;
}
else
{
value = value + wxT(" ") + key;
}
}
return value;
}
//
// Returns the current view type
//
ViewByType
KeyView::GetViewType()
{
return mViewType;
}
// ============================================================================
// Accessibility provider for the KeyView class
// ============================================================================
KeyViewAx::KeyViewAx(KeyView *view)
: wxWindowAccessible(view)
{
mView = view;
mLastId = -1;
}
//
// Send an event notification to accessibility that the view
// has changed.
//
void
KeyViewAx::ListUpdated()
{
NotifyEvent(wxACC_EVENT_OBJECT_REORDER,
mView,
wxOBJID_CLIENT,
0);
}
//
// Inform accessibility a new line has been selected and/or a previously
// selected line is being unselected
//
void
KeyViewAx::SetCurrentLine(int line)
{
// Only send selection remove notification if a line was
// previously selected
if (mLastId != -1)
{
NotifyEvent(wxACC_EVENT_OBJECT_SELECTIONREMOVE,
mView,
wxOBJID_CLIENT,
mLastId);
}
// Nothing is selected now
mLastId = -1;
// Just clearing selection
if (line != wxNOT_FOUND)
{
// Convert line number to childId
LineToId(line, mLastId);
// Send notifications that the line has focus
NotifyEvent(wxACC_EVENT_OBJECT_FOCUS,
mView,
wxOBJID_CLIENT,
mLastId);
// And is selected
NotifyEvent(wxACC_EVENT_OBJECT_SELECTION,
mView,
wxOBJID_CLIENT,
mLastId);
}
}
//
// Convert the childId to a line number and return FALSE if it
// represents a child or TRUE if it a line
//
bool
KeyViewAx::IdToLine(int childId, int & line)
{
if (childId == wxACC_SELF)
{
return false;
}
// Convert to line
line = childId - 1;
// Make sure id is valid
if (line < 0 || line >= (int) mView->GetItemCount())
{
// Indicate the control itself in this case
return false;
}
return true;
}
//
// Convert the line number to a childId.
//
bool
KeyViewAx::LineToId(int line, int & childId)
{
// Make sure line is valid
if (line < 0 || line >= (int) mView->GetItemCount())
{
// Indicate the control itself in this case
childId = wxACC_SELF;
return false;
}
// Convert to line
childId = line + 1;
return true;
}
// Can return either a child object, or an integer
// representing the child element, starting from 1.
wxAccStatus
KeyViewAx::HitTest(const wxPoint & pt, int *childId, wxAccessible **childObject)
{
// Just to be safe
*childObject = NULL;
wxPoint pos = mView->ScreenToClient(pt);
// See if it's on a line within the view
int line = mView->HitTest(pos);
// It was on a line
if (line != wxNOT_FOUND)
{
LineToId(line, *childId);
return wxACC_OK;
}
// Let the base class handle it
return wxACC_NOT_IMPLEMENTED;
}
// Retrieves the address of an IDispatch interface for the specified child.
// All objects must support this property.
wxAccStatus
KeyViewAx::GetChild(int childId, wxAccessible** child)
{
if (childId == wxACC_SELF)
{
*child = this;
}
else
{
*child = NULL;
}
return wxACC_OK;
}
// Gets the number of children.
wxAccStatus
KeyViewAx::GetChildCount(int *childCount)
{
*childCount = (int) mView->GetItemCount();
return wxACC_OK;
}
// Gets the default action for this object (0) or > 0 (the action for a child).
// Return wxACC_OK even if there is no action. actionName is the action, or the empty
// string if there is no action.
// The retrieved string describes the action that is performed on an object,
// not what the object does as a result. For example, a toolbar button that prints
// a document has a default action of "Press" rather than "Prints the current document."
wxAccStatus
KeyViewAx::GetDefaultAction(int WXUNUSED(childId), wxString *actionName)
{
actionName->Clear();
return wxACC_OK;
}
// Returns the description for this object or a child.
wxAccStatus
KeyViewAx::GetDescription(int WXUNUSED(childId), wxString *description)
{
description->Clear();
return wxACC_OK;
}
// Returns help text for this object or a child, similar to tooltip text.
wxAccStatus
KeyViewAx::GetHelpText(int WXUNUSED(childId), wxString *helpText)
{
helpText->Clear();
return wxACC_OK;
}
// Returns the keyboard shortcut for this object or child.
// Return e.g. ALT+K
wxAccStatus
KeyViewAx::GetKeyboardShortcut(int WXUNUSED(childId), wxString *shortcut)
{
shortcut->Clear();
return wxACC_OK;
}
// Returns the rectangle for this object (id = 0) or a child element (id > 0).
// rect is in screen coordinates.
wxAccStatus
KeyViewAx::GetLocation(wxRect & rect, int elementId)
{
int line;
if (IdToLine(elementId, line))
{
if (!mView->IsVisible(line))
{
return wxACC_FAIL;
}
wxRect rectLine;
rectLine.width = mView->GetClientSize().GetWidth();
// iterate over all visible lines
for (int i = (int) mView->GetVisibleBegin(); i <= line; i++)
{
wxCoord hLine = mView->GetLineHeight(i);
rectLine.height = hLine;
rect = rectLine;
wxPoint margins = mView->GetMargins();
rect.Deflate(margins.x, margins.y);
rectLine.y += hLine;
}
rect.SetPosition(mView->ClientToScreen(rect.GetPosition()));
}
else
{
rect = mView->GetRect();
rect.SetPosition(mView->GetParent()->ClientToScreen(rect.GetPosition()));
}
return wxACC_OK;
}
wxAccStatus
KeyViewAx::Navigate(wxNavDir WXUNUSED(navDir),
int WXUNUSED(fromId),
int *WXUNUSED(toId),
wxAccessible **WXUNUSED(toObject))
{
return wxACC_NOT_IMPLEMENTED;
}
// Gets the name of the specified object.
wxAccStatus
KeyViewAx::GetName(int childId, wxString *name)
{
int line;
if (!IdToLine(childId, line))
{
*name = mView->GetName();
}
else
{
if (IdToLine(childId, line))
{
*name = mView->GetValue(line);
}
}
return wxACC_OK;
}
wxAccStatus
KeyViewAx::GetParent(wxAccessible ** WXUNUSED(parent))
{
return wxACC_NOT_IMPLEMENTED;
}
// Returns a role constant.
wxAccStatus
KeyViewAx::GetRole(int childId, wxAccRole *role)
{
if (childId == wxACC_SELF)
{
#if defined(__WXMSW__)
*role = mView->GetViewType() == ViewByTree ? wxROLE_SYSTEM_OUTLINE : wxROLE_SYSTEM_LIST;
#endif
#if defined(__WXMAC__)
*role = wxROLE_SYSTEM_GROUPING;
#endif
}
else
{
#if defined(__WXMAC__)
*role = wxROLE_SYSTEM_TEXT;
#else
*role = mView->GetViewType() == ViewByTree ? wxROLE_SYSTEM_OUTLINEITEM : wxROLE_SYSTEM_LISTITEM;
#endif
}
return wxACC_OK;
}
// Gets a variant representing the selected children
// of this object.
// Acceptable values:
// - a null variant (IsNull() returns TRUE)
// - a list variant (GetType() == wxT("list"))
// - an integer representing the selected child element,
// or 0 if this object is selected (GetType() == wxT("long"))
// - a "void*" pointer to a wxAccessible child object
wxAccStatus
KeyViewAx::GetSelections(wxVariant *selections)
{
int id;
LineToId(mView->GetSelection(), id);
*selections = (long) id;
return wxACC_OK;
}
// Returns a state constant.
wxAccStatus
KeyViewAx::GetState(int childId, long *state)
{
int flag = wxACC_STATE_SYSTEM_FOCUSABLE;
int line;
if (!IdToLine(childId, line))
{
*state = wxACC_STATE_SYSTEM_FOCUSABLE; // |
//mView->FindFocus() == mView ? wxACC_STATE_SYSTEM_FOCUSED : 0;
return wxACC_OK;
}
#if defined(__WXMSW__)
int selected = mView->GetSelection();
flag |= wxACC_STATE_SYSTEM_SELECTABLE;
if (line == selected)
{
flag |= wxACC_STATE_SYSTEM_FOCUSED |
wxACC_STATE_SYSTEM_SELECTED;
}
if (mView->HasChildren(line))
{
flag |= mView->IsExpanded(line) ?
wxACC_STATE_SYSTEM_EXPANDED :
wxACC_STATE_SYSTEM_COLLAPSED;
}
#endif
#if defined(__WXMAC__1)
if (mGrid->IsInSelection(row, col))
{
flag |= wxACC_STATE_SYSTEM_SELECTED;
}
if (mGrid->GetGridCursorRow() == row && mGrid->GetGridCursorCol() == col)
{
flag |= wxACC_STATE_SYSTEM_FOCUSED;
}
if (mGrid->IsReadOnly(row, col))
{
flag |= wxACC_STATE_SYSTEM_UNAVAILABLE;
}
#endif
*state = flag;
return wxACC_OK;
}
// Returns a localized string representing the value for the object
// or child.
wxAccStatus
KeyViewAx::GetValue(int childId, wxString *strValue)
{
int line;
strValue->Clear();
if (!IdToLine(childId, line))
{
return wxACC_NOT_IMPLEMENTED;
}
#if defined(__WXMSW__)
if (mView->GetViewType() == ViewByTree)
{
KeyNode *node = mView->mLines[line];
strValue->Printf(wxT("%d"), node->depth - 1);
}
// Don't set a value for the other view types
return wxACC_NOT_IMPLEMENTED;
#endif
#if defined(__WXMAC__)
return GetName(childId, strValue);
#endif
}
#if defined(__WXMAC__)
// Selects the object or child.
wxAccStatus
KeyViewAx::Select(int childId, wxAccSelectionFlags selectFlags)
{
#if 0
int row;
int col;
if (GetRowCol(childId, row, col))
{
if (selectFlags & wxACC_SEL_TAKESELECTION)
{
mGrid->SetGridCursor(row, col);
}
mGrid->SelectBlock(row, col, row, col, selectFlags & wxACC_SEL_ADDSELECTION);
}
#endif
return wxACC_OK;
}
#endif
// Gets the window with the keyboard focus.
// If childId is 0 and child is NULL, no object in
// this subhierarchy has the focus.
// If this object has the focus, child should be 'this'.
wxAccStatus
KeyViewAx::GetFocus(int * WXUNUSED(childId), wxAccessible **child)
{
*child = this;
return wxACC_OK;
}
#endif // wxUSE_ACCESSIBILITY
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