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Floor the tabLength to avoid drawing bugs. Add the leftover of this cutting to the last tab.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38511 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Clemens Zeidler 2010-09-02 03:51:29 +00:00
parent af89e8106a
commit 743d974099
1 changed files with 14 additions and 6 deletions
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20
src/add-ons/decorators/SATDecorator/Stacking.cpp
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@ -352,17 +352,25 @@ SATStacking::_AdjustWindowTabs()
const SATWindowList& stackedWindows = area->WindowList();
float tabBarLength = frame.Width();
ASSERT(tabBarLength > 0);
float tabLength = tabBarLength / stackedWindows.CountItems();
int stackCount = stackedWindows.CountItems();
float titleBarLength = frame.Width();
ASSERT(titleBarLength > 0);
// floor to avoid drawing issues
float tabLength = floorf(titleBarLength / stackCount);
// the part that we lost due to the floor
float roundingError = 0;
if (tabLength > kMaxTabWidth)
tabLength = kMaxTabWidth;
else
roundingError = titleBarLength - stackCount * tabLength;
float location = 0;
for (int i = 0; i < stackedWindows.CountItems(); i++) {
for (int i = 0; i < stackCount; i++) {
SATWindow* window = stackedWindows.ItemAt(i);
window->SetStackedTabLength(tabLength - 1);
if (i == stackCount - 1)
window->SetStackedTabLength(tabLength - 1 + roundingError);
else
window->SetStackedTabLength(tabLength - 1);
desktop->SetWindowTabLocation(window->GetWindow(), location);
location += tabLength;