void DocHistory::OnMouseWheel(wxMouseEvent& event) {
if (GetScrollThumb(wxVERTICAL)) { // Only handle scrollwheel if we have a scrollbar
const wxSize size = GetClientSize();
int pos = m_scrollPos;
const int rotation = event.GetWheelRotation();
const int linescount = (abs(rotation) / event.GetWheelDelta()) * event.GetLinesPerAction();
if (rotation > 0) { // up
pos = pos - (pos % m_lineHeight) - (m_lineHeight * linescount);
if (pos < 0) pos = 0;
}
else if (rotation < 0) { // down
pos = pos - (pos % m_lineHeight) + (m_lineHeight * linescount);
if (pos > m_treeHeight - size.y) pos = m_treeHeight - size.y;
}
else return; // no rotation
if (pos != m_scrollPos) {
m_oldScrollPos = m_scrollPos;
m_scrollPos = pos;
m_isScrolling = true;
wxClientDC dc(this);
DrawLayout(dc);
}
}
}
bool ScrollBox::Update(const Point2i &mousePosition,
const Point2i &lastMousePosition)
{
// Force redrawing if we are scrolling and the mouse has moved
if (start_drag_offset!=NO_DRAG && mousePosition!=lastMousePosition) {
//NeedRedrawing();
}
bool redraw = need_redrawing;
bool updated = Widget::Update(mousePosition, lastMousePosition);
need_redrawing = redraw;
bool has_scrollbar = HasScrollBar();
m_up->SetVisible(has_scrollbar);
m_down->SetVisible(has_scrollbar);
updated |= WidgetList::Update(mousePosition, lastMousePosition);
if (has_scrollbar) {
GetMainWindow().BoxColor(GetScrollTrack(), dark_gray_color);
const Rectanglei& thumb = GetScrollThumb();
bool over = scroll_mode==SCROLL_MODE_THUMB || thumb.Contains(mousePosition);
GetMainWindow().BoxColor(thumb, over ? white_color : gray_color);
}
return updated;
}
Widget * ScrollBox::Click(const Point2i & mousePosition, uint button)
{
if (!Contains(mousePosition)) {
return NULL;
}
start_drag_offset = NO_DRAG;
scroll_mode = SCROLL_MODE_NONE;
if (HasScrollBar() && Mouse::IS_CLICK_BUTTON(button)) {
start_drag_y = mousePosition.y;
if (GetScrollThumb().Contains(mousePosition)) {
if (!offset) {
// Not yet set, derive from mouse position
const Rectanglei& scroll_track = GetScrollTrack();
int height = scroll_track.GetSizeY();
offset = ( (mousePosition.y - scroll_track.GetPositionY()) * (size.y+GetMaxOffset())
+ (height/2) ) / height;
}
start_drag_offset = offset;
scroll_mode = SCROLL_MODE_THUMB;
} else if (vbox->Contains(mousePosition)) {
// The click occurred inside the vbox, this means scrolling
scroll_mode = SCROLL_MODE_DRAG;
start_drag_offset = offset;
}
}
return WidgetList::Click(mousePosition, button);
}
void BaseEditor::OnScrollPageDownEvt(wxScrollWinEvent& event)
{
int nOrientation = event.GetOrientation();
int nDistance = GetScrollThumb(nOrientation);
int nPos = GetScrollPos(nOrientation);
SetScrollPos(nOrientation, nPos+nDistance, true);
UpdateScrollPosition(GetScrollPos(wxHORIZONTAL), GetScrollPos(wxVERTICAL));
}
void wxJigsawEditorCanvas::OnScrollPageDown(wxScrollWinEvent & event)
{
wxLogTrace(wxTraceMask(), _("wxJigsawEditorCanvas::OnScrollPageDown;"));
SetScrollPos(event.GetOrientation(),
GetScrollPos(event.GetOrientation()) + GetScrollThumb(event.GetOrientation()));
FixViewOffset();
RefreshBuffer();
}
void DocHistory::DrawLayout(wxDC& dc) {
if (!IsShown()) {
// Sometimes OnSize() might get called while control is hidden
m_needRedrawing = true;
return;
}
const wxSize size = GetClientSize();
wxRect rect;
if (m_isScrolling) {
// If there is overlap, then move the image
if (m_scrollPos + size.y > m_oldScrollPos && m_scrollPos < m_oldScrollPos + size.y) {
const int top = wxMax(m_scrollPos, m_oldScrollPos);
const int bottom = wxMin(m_scrollPos, m_oldScrollPos) + size.y;
const int overlap_height = bottom - top;
m_mdc.Blit(0, (top - m_oldScrollPos) + (m_oldScrollPos - m_scrollPos), size.x, overlap_height, &m_mdc, 0, top - m_oldScrollPos);
const int new_height = size.y - overlap_height;
const int newtop = (top == m_scrollPos) ? bottom : m_scrollPos;
rect = wxRect(0,newtop,size.x,new_height); // Just redraw the revealed part
}
else {
rect = wxRect(0,m_scrollPos,size.x,size.y);
}
SetScrollPos(wxVERTICAL, m_scrollPos);
m_isScrolling = false;
}
else {
// Check if we need a scrollbar
bool hasScroll = (GetScrollThumb(wxVERTICAL) != 0);
if (m_treeHeight > size.y) {
SetScrollbar(wxVERTICAL, m_scrollPos, size.y, m_treeHeight);
if (!hasScroll) return; // have sent a size event
}
else {
SetScrollbar(wxVERTICAL, 0, 0, 0);
if (hasScroll) return; // have sent a size event
}
// Can we make room for more of the history?
if (m_scrollPos + size.y > m_treeHeight) {
m_scrollPos = wxMax(0, m_treeHeight-size.y);
}
rect = wxRect(0, m_scrollPos, size.x, size.y);
}
// Resize & scroll the versiontree
wxSize timelinesize = m_pTimeline->GetBestSize();
wxSize treesize = m_pTree->GetBestSize();
if (timelinesize.x + treesize.x >= size.x) {
timelinesize.x = treesize.x = size.x / 3;
}
m_pTimeline->Move(0, 0);
m_pTimeline->SetSize(wxSize(timelinesize.x, size.y));
m_pTimeline->Scroll(m_scrollPos);
m_pTimeline->ReDraw();
// Resize & scroll the versiontree (positioned right of Timeline)
m_pTree->Move(timelinesize.x, 0);
m_pTree->SetSize(wxSize(treesize.x, size.y));
m_pTree->Scroll(m_scrollPos);
m_xposDesc = timelinesize.x + treesize.x;
const int textwidth = size.x - m_xposDesc;
rect = wxRect(m_xposDesc, rect.y, textwidth, rect.height);
// resize the bitmap used for doublebuffering
if (m_bitmap.GetWidth() < textwidth || m_bitmap.GetHeight() < size.y) {
m_bitmap = wxBitmap(textwidth, size.y);
m_mdc.SelectObject(m_bitmap);
}
// Draw the description area
// Notice that the memDc is moved so that m_xposDesc=0
{
// Clear the background
m_mdc.SetBrush(bgBrush);
m_mdc.SetPen(*wxWHITE_PEN);
m_mdc.DrawRectangle(0, rect.y - m_scrollPos, textwidth, rect.height);
// Find the first visible node
unsigned int i;
for (i = 0; i < m_items.size(); ++i) {
if (m_items[i].ypos+m_lineHeight >= rect.y) break;
}
const int ybottom = m_scrollPos + size.y;
// Draw Label & Description
m_mdc.SetTextForeground(*wxBLACK);
const int textindent = 3;
cxLOCK_READ(m_catalyst)
while (i < m_items.size() && m_items[i].ypos < ybottom) {
wxString label = catalyst.GetLabel(m_items[i].doc);
if (!label.empty()) {
label = label.BeforeFirst('\n');
label += wxT(": ");
}
int x; int y;
m_mdc.GetTextExtent(label, &x, &y);
m_mdc.DrawText(label, textindent, m_items[i].ypos-m_scrollPos);
wxString desc = catalyst.GetDescription(m_items[i].doc);
desc = desc.BeforeFirst('\n');
m_mdc.DrawText(desc, textindent+x, m_items[i].ypos-m_scrollPos);
++i;
}
cxENDLOCK
}
// Copy MemoryDC to Display
dc.Blit(m_xposDesc, 0, textwidth, size.y, &m_mdc, 0, 0);
m_needRedrawing = false;
}
