Amebis/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

repositioning the cursor with mouse clicks works

Browse Source 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2677 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
1999-06-05 21:29:41 +00:00
parent 2b6f061f0a
commit b480d85128
4 changed files with 234 additions and 75 deletions
Download Patch File Download Diff File Expand all files Collapse all files

201
user/wxLayout/wxlwindow.cpp
View File

@@ -6,6 +6,14 @@
* $Id$
*******************************************************************/
// ===========================================================================
// declarations
// ===========================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#ifdef __GNUG__
# pragma implementation "wxlwindow.h"
#endif
@@ -45,12 +53,20 @@
#include <ctype.h>
// ----------------------------------------------------------------------------
// macros
// ----------------------------------------------------------------------------
#ifdef WXLAYOUT_DEBUG
# define WXLO_DEBUG(x) wxLogDebug x
#else
# define WXLO_DEBUG(x)
#endif
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
/// offsets to put a nice frame around text
#define WXLO_XOFFSET 4
#define WXLO_YOFFSET 4
@@ -59,6 +75,14 @@
#define WXLO_ROFFSET 20
#define WXLO_BOFFSET 20
/// the size of one scrollbar page in pixels
static const int X_SCROLL_PAGE = 10;
static const int Y_SCROLL_PAGE = 20;
// ----------------------------------------------------------------------------
// event tables
// ----------------------------------------------------------------------------
BEGIN_EVENT_TABLE(wxLayoutWindow,wxScrolledWindow)
EVT_PAINT (wxLayoutWindow::OnPaint)
EVT_CHAR (wxLayoutWindow::OnChar)
@@ -72,6 +96,14 @@ BEGIN_EVENT_TABLE(wxLayoutWindow,wxScrolledWindow)
EVT_KILL_FOCUS(wxLayoutWindow::OnKillFocus)
END_EVENT_TABLE()
// ===========================================================================
// implementation
// ===========================================================================
// ----------------------------------------------------------------------------
// wxLayoutWindow
// ----------------------------------------------------------------------------
wxLayoutWindow::wxLayoutWindow(wxWindow *parent)
: wxScrolledWindow(parent, -1,
wxDefaultPosition, wxDefaultSize,
@@ -95,9 +127,11 @@ wxLayoutWindow::wxLayoutWindow(wxWindow *parent)
m_ScrollToCursor = false;
SetWrapMargin(0);
wxPoint max = m_llist->GetSize();
SetScrollbars(10, 20 /*lineHeight*/, max.x/10+1, max.y/20+1);
EnableScrolling(true,true);
m_maxx = max.x; m_maxy = max.y;
SetScrollbars(X_SCROLL_PAGE, Y_SCROLL_PAGE,
max.x / X_SCROLL_PAGE + 1, max.y / Y_SCROLL_PAGE + 1);
EnableScrolling(true, true);
m_maxx = max.x + X_SCROLL_PAGE;
m_maxy = max.y + Y_SCROLL_PAGE;
m_Selecting = false;
#ifdef WXLAYOUT_USE_CARET
@@ -220,13 +254,32 @@ wxLayoutWindow::OnMouse(int eventId, wxMouseEvent& event)
}
// always move cursor to mouse click:
if(obj && eventId == WXLOWIN_MENU_LCLICK)
if(eventId == WXLOWIN_MENU_LCLICK)
{
m_llist->MoveCursorTo(cursorPos);
// Calculate where the top of the visible area is:
int x0, y0;
ViewStart(&x0,&y0);
int dx, dy;
GetScrollPixelsPerUnit(&dx, &dy);
x0 *= dx; y0 *= dy;
wxPoint offset(-x0+WXLO_XOFFSET, -y0+WXLO_YOFFSET);
m_llist->UpdateCursorScreenPos(dc, true, offset);
if(m_CursorVisibility == -1)
m_CursorVisibility = 1;
// VZ: this should be unnecessary because mouse can only click on a
// visible part of the canvas
#if 0
ScrollToCursor();
#endif // 0
#ifdef __WXGTK__
DoPaint(FALSE); // DoPaint suppresses flicker under GTK
#endif // wxGTK
}
if(!m_doSendEvents) // nothing to do
@@ -323,10 +376,10 @@ wxLayoutWindow::OnChar(wxKeyEvent& event)
m_llist->MoveCursorVertically(1);
break;
case WXK_PRIOR:
m_llist->MoveCursorVertically(-20);
m_llist->MoveCursorVertically(-Y_SCROLL_PAGE);
break;
case WXK_NEXT:
m_llist->MoveCursorVertically(20);
m_llist->MoveCursorVertically(Y_SCROLL_PAGE);
break;
case WXK_HOME:
if ( ctrlDown )
@@ -336,12 +389,11 @@ wxLayoutWindow::OnChar(wxKeyEvent& event)
break;
case WXK_END:
if ( ctrlDown )
{
// TODO VZ: how to move the cursor to the last line of the text?
m_llist->MoveCursorVertically(1000);
}
m_llist->MoveCursorToEndOfLine();
m_llist->MoveCursorTo(m_llist->GetSize());
else
m_llist->MoveCursorToEndOfLine();
break;
default:
if(keyCode == 'c' && ctrlDown)
{
@@ -430,11 +482,9 @@ wxLayoutWindow::OnChar(wxKeyEvent& event)
&& (keyCode < 256 && keyCode >= 32)
)
{
wxString tmp;
tmp += keyCode;
if(m_WrapMargin > 0 && isspace(keyCode))
m_llist->WrapLine(m_WrapMargin);
m_llist->Insert(tmp);
m_llist->Insert((char)keyCode);
}
break;
}
@@ -454,9 +504,13 @@ wxLayoutWindow::OnChar(wxKeyEvent& event)
}
}
// we must call ResizeScrollbars() before ScrollToCursor(), otherwise the
// ne cursor position might be outside the current scrolllbar range
ResizeScrollbars();
ScrollToCursor();
wxRect r = *m_llist->GetUpdateRect();
DoPaint(&r);
// refresh the screen
DoPaint(m_llist->GetUpdateRect());
}
void
@@ -488,34 +542,57 @@ wxLayoutWindow::ScrollToCursor(void)
// Get the size of the visible window:
GetClientSize(&x1,&y1);
wxASSERT(x1 > 0);
wxASSERT(y1 > 0);
// As we have the values anyway, use them to avoid unnecessary
// scrollbar updates.
// notice that the client size may be (0, 0)...
wxASSERT(x1 >= 0 && y1 >= 0);
// VZ: I think this is false - if you do it here, ResizeScrollbars() won't
// call SetScrollbars() later
#if 0
// As we have the values anyway, use them to avoid unnecessary scrollbar
// updates.
if(x1 > m_maxx) m_maxx = x1;
if(y1 > m_maxy) m_maxy = y1;
/* Make sure that the scrollbars are at a position so that the
cursor is visible if we are editing. */
/** Scroll so that cursor is visible! */
#endif // 0
// Make sure that the scrollbars are at a position so that the cursor is
// visible if we are editing
WXLO_DEBUG(("m_ScrollToCursor = %d", (int) m_ScrollToCursor));
wxPoint cc = m_llist->GetCursorScreenPos(*m_memDC);
if(cc.x < x0 || cc.y < y0
|| cc.x >= x0+(9*x1)/10 || cc.y >= y0+(9*y1/10)) // (9*x)/10 == 90%
// the cursor should be completely visible in both directions
wxPoint cs(m_llist->GetCursorSize());
int nx = -1,
ny = -1;
if ( cc.x < x0 || cc.x >= x0 + x1 - cs.x )
{
int nx, ny;
nx = cc.x - x1/2; if(nx < 0) nx = 0;
ny = cc.y - y1/2; if(ny < 0) ny = 0;
Scroll(nx/dx,ny/dy); // new view start
x0 = nx; y0 = ny;
m_ScrollToCursor = false; // avoid recursion
nx = cc.x - x1/2;
if ( nx < 0 )
nx = 0;
}
if ( cc.y < y0 || cc.y >= y0 + y1 - cs.y )
{
ny = cc.y - y1/2;
if ( ny < 0)
ny = 0;
}
if ( nx != -1 || ny != -1 )
{
// set new view start
Scroll(nx == -1 ? -1 : (nx+dx-1)/dx, ny == -1 ? -1 : (ny+dy-1)/dy);
// avoid recursion
m_ScrollToCursor = false;
}
}
void
wxLayoutWindow::OnPaint( wxPaintEvent &WXUNUSED(event)) // or: OnDraw(wxDC& dc)
wxLayoutWindow::OnPaint( wxPaintEvent &WXUNUSED(event))
{
wxRect region = GetUpdateRegion().GetBox();
InternalPaint(& region);
InternalPaint(&region);
}
void
@@ -551,13 +628,8 @@ wxLayoutWindow::InternalPaint(const wxRect *updateRect)
// Get the size of the visible window:
GetClientSize(&x1,&y1);
wxASSERT(x1 > 0);
wxASSERT(y1 > 0);
// As we have the values anyway, use them to avoid unnecessary
// scrollbar updates.
if(x1 > m_maxx) m_maxx = x1;
if(y1 > m_maxy) m_maxy = y1;
wxASSERT(x1 >= 0);
wxASSERT(y1 >= 0);
if(updateRect)
{
@@ -634,10 +706,13 @@ wxLayoutWindow::InternalPaint(const wxRect *updateRect)
// needed to erase it):
m_llist->InvalidateUpdateRect();
if(m_CursorVisibility != 0)
{
m_llist->UpdateCursorScreenPos(dc, true, offset);
m_llist->DrawCursor(*m_memDC,
m_HaveFocus && IsEditable(), // draw a thick
// cursor for editable windows with focus
offset);
}
// Now copy everything to the screen:
#if 0
@@ -672,13 +747,22 @@ wxLayoutWindow::InternalPaint(const wxRect *updateRect)
ResetDirty();
m_ScrollToCursor = false;
if(m_StatusBar && m_StatusFieldCursor != -1)
if ( m_StatusBar && m_StatusFieldCursor != -1 )
{
wxString label;
label.Printf(_("Ln:%d Col:%d"),
m_llist->GetCursorPos().y+1,
m_llist->GetCursorPos().x+1);
m_StatusBar->SetStatusText(label, m_StatusFieldCursor);
static wxPoint s_oldCursorPos(-1, -1);
wxPoint pos(m_llist->GetCursorPos());
// avoid unnecessary status bar refreshes
if ( pos != s_oldCursorPos )
{
s_oldCursorPos = pos;
wxString label;
label.Printf(_("Ln:%d Col:%d"), pos.y + 1, pos.x + 1);
m_StatusBar->SetStatusText(label, m_StatusFieldCursor);
}
}
}
@@ -688,21 +772,26 @@ wxLayoutWindow::ResizeScrollbars(bool exact)
{
wxPoint max = m_llist->GetSize();
WXLO_DEBUG(("ResizeScrollbars: GetSize: %ld, %ld", (long int)max.x,
(long int) max.y));
if(max.x > m_maxx || max.y > m_maxy
|| max.x > m_maxx-WXLO_ROFFSET || max.y > m_maxy-WXLO_BOFFSET
|| exact)
WXLO_DEBUG(("ResizeScrollbars: max size = (%ld, %ld)",
(long int)max.x, (long int) max.y));
if( max.x > m_maxx - WXLO_ROFFSET || max.y > m_maxy - WXLO_BOFFSET || exact )
{
if(! exact)
if ( !exact )
{
// add an extra bit to the sizes to avoid future updates
max.x = max.x+WXLO_ROFFSET;
max.y = max.y+WXLO_BOFFSET;
max.x += WXLO_ROFFSET;
max.y += WXLO_BOFFSET;
}
ViewStart(&m_ViewStartX, &m_ViewStartY);
SetScrollbars(10, 20, max.x/10+1,max.y/20+1,m_ViewStartX,m_ViewStartY,true);
m_maxx = max.x; m_maxy = max.y;
SetScrollbars(X_SCROLL_PAGE, Y_SCROLL_PAGE,
max.x / X_SCROLL_PAGE + 1, max.y / Y_SCROLL_PAGE + 1,
m_ViewStartX, m_ViewStartY,
true);
m_maxx = max.x + X_SCROLL_PAGE;
m_maxy = max.y + Y_SCROLL_PAGE;
}
}