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with Common, OS, UserIO, Controls, Windows;
use Common, OS, UserIO, Controls, Windows;
procedure scrollable is
procedure ScrollTest is
line : aliased aStaticLine;
ok : aliased aSimpleButton;
up : aliased aSimpleButton;
down : aliased aSimpleButton;
left : aliased aSimpleButton;
right : aliased aSimpleButton;
list : aliased aStaticList;
DT : aDialogTaskRecord;
DisplayInfo : ADisplayInfoRec;
begin
GetDisplayInfo( DisplayInfo );
OpenWindow( "Window Scrolling Test", 0, 0, DisplayInfo.H_Res-1, DisplayInfo.V_Res-1, normal, true );
Init( line, 22, 18, 40, 18 );
SetText( line, "Click OK to quit." );
AddControl( line'unchecked_access );
Init( ok, 2, 18, 10, 18, 'o' );
SetText( ok, "OK" );
AddControl( ok'unchecked_access );
Init( up, 12, DisplayInfo.V_Res-4, 20, DisplayInfo.V_Res-4, 'u' );
SetText( up, "Up" );
Scrollable( up, false );
AddControl( up'unchecked_access );
Init( down, 22, DisplayInfo.V_Res-4, 30, DisplayInfo.V_Res-4, 'o' );
SetText( down, "Down" );
Scrollable( down, false );
AddControl( down'unchecked_access );
Init( left, 32, DisplayInfo.V_Res-4, 40, DisplayInfo.V_Res-4, 'l' );
SetText( left, "Left" );
Scrollable( left, false );
AddControl( left'unchecked_access );
Init( right, 42, DisplayInfo.V_Res-4, 50, DisplayInfo.V_Res-4, 'r' );
SetText( right, "Right" );
Scrollable( right, false );
AddControl( right'unchecked_access );
Init( list, 2, 1, 30, 16 );
AddControl( list'unchecked_access );
loop
SetInfoText( "Offset:" & GetWindowXScroll( CurrentWindow )'img &
"," & GetWindowYScroll( CurrentWindow )'img );
DoDialog( DT );
case DT.control is
when 2 => exit;
when 3 => ScrollWindow( 0, -1 ); -- move the control's up 1 vertically
DrawWindow( whole ); -- erase and redraw whole window
when 4 => ScrollWindow( 0, +1 ); -- move the control's down 1 vertically
DrawWindow( whole ); -- erase and redraw whole window
when 5 => ScrollWindow( -2, 0 ); -- move the control's left 2
DrawWindow( whole ); -- erase and redraw whole window
when 6 => ScrollWindow( +2, 0 ); -- move the control's right 2
DrawWindow( whole ); -- erase and redraw whole window
when others => null;
end case;
end loop;
CloseWindow;
end ScrollTest;
procedure ScrollTest2 is
line : aliased aStaticLine;
ok : aliased aSimpleButton;
hbar : aliased aScrollBar;
vbar : aliased aScrollBar;
list : aliased aStaticList;
DT : aDialogTaskRecord;
DisplayInfo : ADisplayInfoRec;
VirtualWidth : constant integer := 20; -- amount of scrolling
VirtualHeight : constant integer := 20; -- amount of scrolling
NewScroll : integer;
begin
GetDisplayInfo( DisplayInfo );
OpenWindow( "Window Scrolling Using Scroll Bars Test", 0, 0, DisplayInfo.H_Res-1, DisplayInfo.V_Res-1, normal, true );
Init( line, 22, 18, 40, 18 );
SetText( line, "Click OK to quit." );
AddControl( line'unchecked_access );
Init( ok, 2, 18, 10, 18, 'o' );
SetText( ok, "OK" );
AddControl( ok'unchecked_access );
Init( hbar, 1, DisplayInfo.V_Res-4, DisplayInfo.H_Res-4, DisplayInfo.V_Res-4 );
SetThumb( hbar, VirtualWidth/2 );
SetMax( hbar, VirtualWidth );
Scrollable( hbar, false );
AddControl( hbar'unchecked_access );
Init( vbar, DisplayInfo.H_Res-3, 1, DisplayInfo.H_Res-3, DisplayInfo.V_Res-5, 'u' );
SetThumb( vbar, VirtualHeight/2 );
SetMax( vbar, VirtualHeight );
Scrollable( vbar, false );
AddControl( vbar'unchecked_access );
Init( list, 2, 1, 30, 16 );
AddControl( list'unchecked_access );
loop
SetInfoText( "Offset:" & GetWindowXScroll( CurrentWindow )'img &
"," & GetWindowYScroll( CurrentWindow )'img );
DoDialog( DT );
case DT.control is
when 2 => exit;
when 3 => -- move the control horizontally
-- erase and redraw whole window
NewScroll := GetThumb( hbar ) - VirtualWidth/2;
NewScroll := NewScroll - GetWindowXScroll( CurrentWindow );
ScrollWindow (NewScroll, 0 );
DrawWindow( whole );
when 4 => -- move the control vertically
-- erase and redraw whole window
NewScroll := GetThumb( vbar ) - VirtualHeight/2;
NewScroll := NewScroll - GetWindowYScroll( CurrentWindow );
ScrollWindow( 0, NewScroll);
DrawWindow( whole );
when others => null;
end case;
end loop;
CloseWindow;
end ScrollTest2;
line1 : aliased AStaticLine;
line2 : aliased AStaticLine;
ok : aliased ASimpleButton;
DT : aDialogTaskRecord;
begin
StartupCommon( "TIA", "tia" );
StartupOS;
StartupUserIO;
StartupControls;
StartupWindows;
OpenWindow( "Window Scrolling Test", 0, 0, 60, 20, normal, false );
Init( line1, 2, 2, 58, 2 );
SetText( line1, "This a demonstration of ScrollWindow." );
AddControl( line1'unchecked_access );
Init( line2, 2, 3, 58, 3 );
SetText( line2, "It scrolls a window's controls." );
AddControl( line2'unchecked_access );
Init( ok, 2, 18, 30, 18, 'o' );
SetText( ok, "OK" );
AddControl( ok'unchecked_access );
DoDialog( DT );
ScrollTest;
ScrollTest2;
CloseWindow;
ShutdownWindows;
ShutdownControls;
ShutdownUserIO;
ShutdownOS;
ShutdownCommon;
end scrollable;
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