X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4ca24f185f870295a7041c64a4f375bed8d75d57..81f6ea4a29eb815dbed0adea369efdc8fece0269:/src/gtk/scrolwin.cpp diff --git a/src/gtk/scrolwin.cpp b/src/gtk/scrolwin.cpp index fe7bf353ea..26b690e4fd 100644 --- a/src/gtk/scrolwin.cpp +++ b/src/gtk/scrolwin.cpp @@ -1,12 +1,12 @@ ///////////////////////////////////////////////////////////////////////////// // Name: gtk/scrolwin.cpp // Purpose: wxScrolledWindow implementation -// Author: Julian Smart -// Modified by: +// Author: Robert Roebling +// Modified by: Ron Lee // Created: 01/02/97 // RCS-ID: $Id$ -// Copyright: (c) Julian Smart and Markus Holzem -// Licence: wxWindows license +// Copyright: (c) Robert Roebling +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// // ============================================================================ @@ -17,10 +17,6 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ - #pragma implementation "scrolwin.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -28,10 +24,9 @@ #pragma hdrstop #endif +#include "wx/scrolwin.h" #include "wx/utils.h" #include "wx/dcclient.h" - -#include "wx/scrolwin.h" #include "wx/panel.h" #include "wx/sizer.h" @@ -73,6 +68,7 @@ extern bool g_isIdle; // "value_changed" from m_vAdjust //----------------------------------------------------------------------------- +extern "C" { static void gtk_scrolled_window_vscroll_callback( GtkAdjustment *adjust, SCROLLBAR_CBACK_ARG wxScrolledWindow *win ) @@ -83,15 +79,17 @@ static void gtk_scrolled_window_vscroll_callback( GtkAdjustment *adjust, if (g_blockEventsOnDrag) return; if (!win->m_hasVMT) return; - + win->GtkVScroll( adjust->value, GET_SCROLL_TYPE(GTK_SCROLLED_WINDOW(win->m_widget)->vscrollbar) ); } +} //----------------------------------------------------------------------------- // "value_changed" from m_hAdjust //----------------------------------------------------------------------------- +extern "C" { static void gtk_scrolled_window_hscroll_callback( GtkAdjustment *adjust, SCROLLBAR_CBACK_ARG wxScrolledWindow *win ) @@ -105,11 +103,13 @@ static void gtk_scrolled_window_hscroll_callback( GtkAdjustment *adjust, win->GtkHScroll( adjust->value, GET_SCROLL_TYPE(GTK_SCROLLED_WINDOW(win->m_widget)->hscrollbar) ); } +} //----------------------------------------------------------------------------- // "button_press_event" from scrollbar //----------------------------------------------------------------------------- +extern "C" { static gint gtk_scrollbar_button_press_callback( GtkRange *widget, GdkEventButton *gdk_event, wxWindowGTK *win) @@ -126,11 +126,13 @@ static gint gtk_scrollbar_button_press_callback( GtkRange *widget, return FALSE; } +} //----------------------------------------------------------------------------- // "button_release_event" from scrollbar //----------------------------------------------------------------------------- +extern "C" { static gint gtk_scrollbar_button_release_callback( GtkRange *widget, GdkEventButton *WXUNUSED(gdk_event), wxWindowGTK *win) @@ -169,6 +171,7 @@ static gint gtk_scrollbar_button_release_callback( GtkRange *widget, return FALSE; } +} //----------------------------------------------------------------------------- // InsertChild for wxScrolledWindow @@ -202,8 +205,6 @@ void wxScrolledWindow::Init() m_yScrollingEnabled = TRUE; m_xScrollPosition = 0; m_yScrollPosition = 0; - m_xScrollLines = 0; - m_yScrollLines = 0; m_xScrollLinesPerPage = 0; m_yScrollLinesPerPage = 0; m_targetWindow = (wxWindow*) NULL; @@ -290,7 +291,7 @@ bool wxScrolledWindow::Create(wxWindow *parent, GtkHConnectEvent(); // these handlers block mouse events to any window during scrolling such as - // motion events and prevent GTK and wxWindows from fighting over where the + // motion events and prevent GTK and wxWidgets from fighting over where the // slider should be gtk_signal_connect( GTK_OBJECT(scrolledWindow->vscrollbar), "button_press_event", @@ -315,7 +316,7 @@ bool wxScrolledWindow::Create(wxWindow *parent, PostCreation(); Show( TRUE ); - + return TRUE; } @@ -323,107 +324,185 @@ bool wxScrolledWindow::Create(wxWindow *parent, // setting scrolling parameters // ---------------------------------------------------------------------------- +void wxScrolledWindow::DoSetVirtualSize( int x, int y ) +{ + wxPanel::DoSetVirtualSize( x, y ); + AdjustScrollbars(); + + if (GetAutoLayout()) + Layout(); +} + +// wxWindow's GetBestVirtualSize returns the actual window size, +// whereas we want to return the virtual size +wxSize wxScrolledWindow::GetBestVirtualSize() const +{ + wxSize clientSize( GetClientSize() ); + if (GetSizer()) + { + wxSize minSize( GetSizer()->CalcMin() ); + + return wxSize( wxMax( clientSize.x, minSize.x ), wxMax( clientSize.y, minSize.y ) ); + } + else + return clientSize; +} + +// return the size best suited for the current window +// (this isn't a virtual size, this is a sensible size for the window) +wxSize wxScrolledWindow::DoGetBestSize() const +{ + wxSize best; + + if ( GetSizer() ) + { + wxSize b = GetSizer()->GetMinSize(); + + // Only use the content to set the window size in the direction + // where there's no scrolling; otherwise we're going to get a huge + // window in the direction in which scrolling is enabled + int ppuX, ppuY; + GetScrollPixelsPerUnit(& ppuX, & ppuY); + + wxSize minSize; + if ( GetMinSize().IsFullySpecified() ) + minSize = GetMinSize(); + else + minSize = GetSize(); + + if (ppuX > 0) + b.x = minSize.x; + if (ppuY > 0) + b.y = minSize.y; + best = b; + } + else + return wxWindow::DoGetBestSize(); + + // Add any difference between size and client size + wxSize diff = GetSize() - GetClientSize(); + best.x += wxMax(0, diff.x); + best.y += wxMax(0, diff.y); + + return best; +} + /* * pixelsPerUnitX/pixelsPerUnitY: number of pixels per unit (e.g. pixels per text line) * noUnitsX/noUnitsY: : no. units per scrollbar */ -void wxScrolledWindow::SetScrollbars (int pixelsPerUnitX, int pixelsPerUnitY, - int noUnitsX, int noUnitsY, - int xPos, int yPos, bool noRefresh ) +void wxScrolledWindow::SetScrollbars( int pixelsPerUnitX, int pixelsPerUnitY, + int noUnitsX, int noUnitsY, + int xPos, int yPos, bool noRefresh ) { - int old_x = m_xScrollPixelsPerLine * m_xScrollPosition; - int old_y = m_yScrollPixelsPerLine * m_yScrollPosition; + int xs, ys; + GetViewStart (& xs, & ys); + + int old_x = m_xScrollPixelsPerLine * xs; + int old_y = m_yScrollPixelsPerLine * ys; m_xScrollPixelsPerLine = pixelsPerUnitX; m_yScrollPixelsPerLine = pixelsPerUnitY; - m_xScrollLines = noUnitsX; - m_yScrollLines = noUnitsY; - m_xScrollPosition = xPos; - m_yScrollPosition = yPos; - m_hAdjust->lower = 0.0; - m_hAdjust->upper = noUnitsX; - m_hAdjust->value = xPos; - m_hAdjust->step_increment = 1.0; - m_hAdjust->page_increment = 2.0; + m_hAdjust->value = m_xScrollPosition = xPos; + m_vAdjust->value = m_yScrollPosition = yPos; - m_vAdjust->lower = 0.0; - m_vAdjust->upper = noUnitsY; - m_vAdjust->value = yPos; - m_vAdjust->step_increment = 1.0; - m_vAdjust->page_increment = 2.0; + // Setting hints here should arguably be deprecated, but without it + // a sizer might override this manual scrollbar setting in old code. + // m_targetWindow->SetVirtualSizeHints( noUnitsX * pixelsPerUnitX, noUnitsY * pixelsPerUnitY ); - AdjustScrollbars(); + int w = noUnitsX * pixelsPerUnitX; + int h = noUnitsY * pixelsPerUnitY; + m_targetWindow->SetVirtualSize( w ? w : wxDefaultCoord, + h ? h : wxDefaultCoord); if (!noRefresh) { int new_x = m_xScrollPixelsPerLine * m_xScrollPosition; int new_y = m_yScrollPixelsPerLine * m_yScrollPosition; - m_targetWindow->ScrollWindow( old_x-new_x, old_y-new_y ); + m_targetWindow->ScrollWindow( old_x - new_x, old_y - new_y ); } } void wxScrolledWindow::AdjustScrollbars() { int w, h; - m_targetWindow->GetClientSize( &w, &h ); + int vw, vh; + m_targetWindow->GetClientSize( &w, &h ); + m_targetWindow->GetVirtualSize( &vw, &vh ); + if (m_xScrollPixelsPerLine == 0) { m_hAdjust->upper = 1.0; + m_hAdjust->page_increment = 1.0; m_hAdjust->page_size = 1.0; } else { - m_hAdjust->page_size = (w / m_xScrollPixelsPerLine); + m_hAdjust->upper = (vw+m_xScrollPixelsPerLine-1) / m_xScrollPixelsPerLine; + m_hAdjust->page_size = w / m_xScrollPixelsPerLine; + m_hAdjust->page_increment = w / m_xScrollPixelsPerLine; - int max = (int)(m_hAdjust->upper - m_hAdjust->page_size + 0.5); - if (max < 0) max = 0; + // Special case. When client and virtual size are very close but + // the client is big enough, kill scrollbar. - int x_pos = m_xScrollPosition; - if (x_pos > max) x_pos = max; - if (x_pos < 0) x_pos = 0; - - int old_x = m_xScrollPosition; - m_xScrollPosition = x_pos; - m_hAdjust->value = x_pos; + if ((m_hAdjust->page_size < m_hAdjust->upper) && (w >= vw)) + m_hAdjust->page_size += 1.0; + + // If the scrollbar hits the right side, move the window + // right to keep it from over extending. - if (x_pos != old_x) - m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 ); + if ((m_hAdjust->value != 0.0) && (m_hAdjust->value + m_hAdjust->page_size > m_hAdjust->upper)) + { + m_hAdjust->value = m_hAdjust->upper - m_hAdjust->page_size; + if (m_hAdjust->value < 0.0) + m_hAdjust->value = 0.0; + + if (GetChildren().GetCount() == 0) + m_xScrollPosition = (int)m_hAdjust->value; // This is enough without child windows + else + gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "value_changed" ); // Actually scroll window + } } if (m_yScrollPixelsPerLine == 0) { m_vAdjust->upper = 1.0; + m_vAdjust->page_increment = 1.0; m_vAdjust->page_size = 1.0; } else { - m_vAdjust->page_size = (h / m_yScrollPixelsPerLine); - - int max = (int)(m_vAdjust->upper - m_vAdjust->page_size + 0.5); - if (max < 0) max = 0; + m_vAdjust->upper = (vh+m_yScrollPixelsPerLine-1) / m_yScrollPixelsPerLine; + m_vAdjust->page_size = h / m_yScrollPixelsPerLine; + m_vAdjust->page_increment = h / m_yScrollPixelsPerLine; - int y_pos = m_yScrollPosition; - if (y_pos > max) y_pos = max; - if (y_pos < 0) y_pos = 0; + if ((m_vAdjust->page_size < m_vAdjust->upper) && (h >= vh)) + m_vAdjust->page_size += 1.0; - int old_y = m_yScrollPosition; - m_yScrollPosition = y_pos; - m_vAdjust->value = y_pos; - - if (y_pos != old_y) - m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine ); + if ((m_vAdjust->value != 0.0) && (m_vAdjust->value + m_vAdjust->page_size > m_vAdjust->upper)) + { + m_vAdjust->value = m_vAdjust->upper - m_vAdjust->page_size; + if (m_vAdjust->value < 0.0) + m_vAdjust->value = 0.0; + + if (GetChildren().GetCount() == 0) + m_yScrollPosition = (int)m_vAdjust->value; + else + gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "value_changed" ); + } } - m_xScrollLinesPerPage = (int)(m_hAdjust->page_size + 0.5); - m_yScrollLinesPerPage = (int)(m_vAdjust->page_size + 0.5); + m_xScrollLinesPerPage = (int)(m_hAdjust->page_increment + 0.5); + m_yScrollLinesPerPage = (int)(m_vAdjust->page_increment + 0.5); gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "changed" ); gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "changed" ); } + // ---------------------------------------------------------------------------- // target window handling // ---------------------------------------------------------------------------- @@ -434,19 +513,35 @@ void wxScrolledWindow::SetTargetWindow( wxWindow *target, bool WXUNUSED(pushEven m_targetWindow = target; } -wxWindow *wxScrolledWindow::GetTargetWindow() +wxWindow *wxScrolledWindow::GetTargetWindow() const { return m_targetWindow; } // Override this function if you don't want to have wxScrolledWindow // automatically change the origin according to the scroll position. -void wxScrolledWindow::PrepareDC(wxDC& dc) +void wxScrolledWindow::DoPrepareDC(wxDC& dc) { dc.SetDeviceOrigin( -m_xScrollPosition * m_xScrollPixelsPerLine, -m_yScrollPosition * m_yScrollPixelsPerLine ); } +void wxScrolledWindow::SetScrollRate( int xstep, int ystep ) +{ + int old_x = m_xScrollPixelsPerLine * m_xScrollPosition; + int old_y = m_yScrollPixelsPerLine * m_yScrollPosition; + + m_xScrollPixelsPerLine = xstep; + m_yScrollPixelsPerLine = ystep; + + int new_x = m_xScrollPixelsPerLine * m_xScrollPosition; + int new_y = m_yScrollPixelsPerLine * m_yScrollPosition; + + m_targetWindow->ScrollWindow( old_x - new_x, old_y - new_y ); + + AdjustScrollbars(); +} + void wxScrolledWindow::GetScrollPixelsPerUnit (int *x_unit, int *y_unit) const { if ( x_unit ) @@ -516,8 +611,7 @@ void wxScrolledWindow::OnScroll(wxScrollWinEvent& event) void wxScrolledWindow::Scroll( int x_pos, int y_pos ) { - if (!m_targetWindow) - return; + wxASSERT_MSG( m_targetWindow != 0, _T("No target window") ); if (((x_pos == -1) || (x_pos == m_xScrollPosition)) && ((y_pos == -1) || (y_pos == m_yScrollPosition))) return; @@ -535,7 +629,7 @@ void wxScrolledWindow::Scroll( int x_pos, int y_pos ) m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 ); - // Just update the scrollbar, don't send any wxWindows event + // Just update the scrollbar, don't send any wxWidgets event GtkHDisconnectEvent(); gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "value_changed" ); GtkHConnectEvent(); @@ -554,7 +648,7 @@ void wxScrolledWindow::Scroll( int x_pos, int y_pos ) m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine ); - // Just update the scrollbar, don't send any wxWindows event + // Just update the scrollbar, don't send any wxWidgets event GtkVDisconnectEvent(); gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "value_changed" ); GtkVConnectEvent(); @@ -565,8 +659,7 @@ void wxScrolledWindow::Scroll( int x_pos, int y_pos ) void wxScrolledWindow::GtkVScroll( float value, unsigned int scroll_type ) { - if (!m_targetWindow) - return; + wxASSERT_MSG( m_targetWindow != 0, _T("No target window") ); if (m_yScrollPixelsPerLine == 0) return; @@ -585,8 +678,7 @@ void wxScrolledWindow::GtkVScroll( float value, unsigned int scroll_type ) void wxScrolledWindow::GtkHScroll( float value, unsigned int scroll_type ) { - if (!m_targetWindow) - return; + wxASSERT_MSG( m_targetWindow != 0, _T("No target window") ); if (m_xScrollPixelsPerLine == 0) return; @@ -609,28 +701,6 @@ void wxScrolledWindow::EnableScrolling (bool x_scroll, bool y_scroll) m_yScrollingEnabled = y_scroll; } -void wxScrolledWindow::GetVirtualSize (int *x, int *y) const -{ - wxSize sz(0, 0); - if (m_targetWindow) - sz = m_targetWindow->GetClientSize(); - - if ( x ) - { - if (m_xScrollPixelsPerLine == 0) - *x = sz.x; - else - *x = m_xScrollPixelsPerLine * m_xScrollLines; - } - if ( y ) - { - if (m_yScrollPixelsPerLine == 0) - *y = sz.y; - else - *y = m_yScrollPixelsPerLine * m_yScrollLines; - } -} - // Where the current view starts from void wxScrolledWindow::GetViewStart (int *x, int *y) const { @@ -642,18 +712,24 @@ void wxScrolledWindow::GetViewStart (int *x, int *y) const void wxScrolledWindow::DoCalcScrolledPosition(int x, int y, int *xx, int *yy) const { + int xs, ys; + GetViewStart (& xs, & ys); + if ( xx ) - *xx = x - m_xScrollPosition * m_xScrollPixelsPerLine; + *xx = x - xs * m_xScrollPixelsPerLine; if ( yy ) - *yy = y - m_yScrollPosition * m_yScrollPixelsPerLine; + *yy = y - ys * m_yScrollPixelsPerLine; } void wxScrolledWindow::DoCalcUnscrolledPosition(int x, int y, int *xx, int *yy) const { + int xs, ys; + GetViewStart (& xs, & ys); + if ( xx ) - *xx = x + m_xScrollPosition * m_xScrollPixelsPerLine; + *xx = x + xs * m_xScrollPixelsPerLine; if ( yy ) - *yy = y + m_yScrollPosition * m_yScrollPixelsPerLine; + *yy = y + ys * m_yScrollPixelsPerLine; } int wxScrolledWindow::CalcScrollInc(wxScrollWinEvent& event) @@ -672,9 +748,9 @@ int wxScrolledWindow::CalcScrollInc(wxScrollWinEvent& event) if (event.GetEventType() == wxEVT_SCROLLWIN_BOTTOM) { if (orient == wxHORIZONTAL) - nScrollInc = m_xScrollLines - m_xScrollPosition; + nScrollInc = GetVirtualSize().GetWidth() / m_xScrollPixelsPerLine - m_xScrollPosition; else - nScrollInc = m_yScrollLines - m_yScrollPosition; + nScrollInc = GetVirtualSize().GetHeight() / m_yScrollPixelsPerLine - m_yScrollPosition; } else if (event.GetEventType() == wxEVT_SCROLLWIN_LINEUP) { @@ -774,14 +850,14 @@ void wxScrolledWindow::SetScrollPos( int orient, int pos, bool refresh ) { if (orient == wxHORIZONTAL) { - // Just update the scrollbar, don't send any wxWindows event + // Just update the scrollbar, don't send any wxWidgets event GtkHDisconnectEvent(); gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "value_changed" ); GtkHConnectEvent(); } else { - // Just update the scrollbar, don't send any wxWindows event + // Just update the scrollbar, don't send any wxWidgets event GtkVDisconnectEvent(); gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "value_changed" ); GtkVConnectEvent(); @@ -813,12 +889,13 @@ void wxScrolledWindow::GtkVDisconnectEvent() (GtkSignalFunc) gtk_scrolled_window_vscroll_callback, (gpointer) this ); } - bool wxScrolledWindow::Layout() { - if (GetSizer()) + if (GetSizer() && m_targetWindow == this) { - // Take into account the virtual size and scrolled position of the window + // If we're the scroll target, take into account the + // virtual size and scrolled position of the window. + int x, y, w, h; CalcScrolledPosition(0,0, &x,&y); GetVirtualSize(&w, &h); @@ -836,12 +913,17 @@ bool wxScrolledWindow::Layout() // Default OnSize resets scrollbars, if any void wxScrolledWindow::OnSize(wxSizeEvent& WXUNUSED(event)) { -#if wxUSE_CONSTRAINTS - if (GetAutoLayout()) - Layout(); -#endif - - AdjustScrollbars(); + if ( m_targetWindow->GetAutoLayout() ) + { + wxSize size = m_targetWindow->GetBestVirtualSize(); + + // This will call ::Layout() and ::AdjustScrollbars() + SetVirtualSize( size ); + } + else + { + AdjustScrollbars(); + } } // This calls OnDraw, having adjusted the origin according to the current @@ -864,7 +946,7 @@ void wxScrolledWindow::OnChar(wxKeyEvent& event) szx, szy, // view size (total) clix, cliy; // view size (on screen) - ViewStart(&stx, &sty); + GetViewStart(&stx, &sty); GetClientSize(&clix, &cliy); GetVirtualSize(&szx, &szy); @@ -893,7 +975,7 @@ void wxScrolledWindow::OnChar(wxKeyEvent& event) yScrollOld = GetScrollPos(wxVERTICAL); int dsty; - switch ( event.KeyCode() ) + switch ( event.GetKeyCode() ) { case WXK_PAGEUP: case WXK_PRIOR: @@ -939,19 +1021,21 @@ void wxScrolledWindow::OnChar(wxKeyEvent& event) int xScroll = GetScrollPos(wxHORIZONTAL); if ( xScroll != xScrollOld ) { - wxScrollWinEvent event(wxEVT_SCROLLWIN_THUMBTRACK, xScroll, - wxHORIZONTAL); - event.SetEventObject(this); - GetEventHandler()->ProcessEvent(event); + wxScrollWinEvent eventS(wxEVT_SCROLLWIN_THUMBTRACK, xScroll, + wxHORIZONTAL); + eventS.SetEventObject(this); + GetEventHandler()->ProcessEvent(eventS); } int yScroll = GetScrollPos(wxVERTICAL); if ( yScroll != yScrollOld ) { - wxScrollWinEvent event(wxEVT_SCROLLWIN_THUMBTRACK, yScroll, - wxVERTICAL); - event.SetEventObject(this); - GetEventHandler()->ProcessEvent(event); + wxScrollWinEvent eventS(wxEVT_SCROLLWIN_THUMBTRACK, yScroll, + wxVERTICAL); + eventS.SetEventObject(this); + GetEventHandler()->ProcessEvent(eventS); } } + +// vi:sts=4:sw=4:et