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TAChart: Use ItemHeight property and OnMeasureItem event when drawing chart listbox

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git-svn-id: trunk@34040 -
This commit is contained in:
ask 2011-12-08 12:08:52 +00:00
parent 9a66e29797
commit 2b6fc8ff1f
1 changed files with 6 additions and 5 deletions
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11
components/tachart/tachartlistbox.pas
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@ -223,7 +223,8 @@ begin
w := GetSystemMetrics(SM_CYMENUCHECK);
x := 2;
if cloShowCheckboxes in Options then begin
ACheckboxRect := Bounds(AItemRect.Left + 1, AItemRect.Top + 1, w, w);
with AItemRect do
ACheckboxRect := Bounds(Left + 1, (Top + Bottom - w) div 2, w, w);
if cloShowIcons in Options then
x += ACheckboxRect.Right;
end
@ -416,12 +417,12 @@ begin
inherited KeyDown(AKey, AShift);
end;
// Item height is determined as maximum of:
// checkbox height, text height, ItemHeight property value.
procedure TChartListbox.MeasureItem(AIndex: Integer; var AHeight: Integer);
{ inherited from ancestor: measures the height of a listbox item taking into
account the height of the checkbox }
begin
Unused(AIndex);
AHeight := CalculateStandardItemHeight;
inherited MeasureItem(AIndex, AHeight);
AHeight := Max(CalculateStandardItemHeight, AHeight);
if cloShowCheckboxes in Options then
AHeight := Max(AHeight, GetSystemMetrics(SM_CYMENUCHECK) + 2);
end;