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Fix incorrect code sorting pages by their widths in wxRibbon.

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The "sneaky obj array trickery" wasn't very sneaky but was just plain wrong
and misused object array of pages in a way that was invalid and didn't crash
just because of sheer luck.

Rewrite this code to use a temporary wxVector of pages that can be sorted
independently of the main m_pages array. This is 100% safe and also more
clear.

Closes #14625.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72516 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2012-09-20 10:19:54 +00:00
parent 0224c1f68b
commit f335950b3a
1 changed files with 27 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

46
src/ribbon/bar.cpp
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@@ -21,6 +21,7 @@
#include "wx/ribbon/art.h"
#include "wx/dcbuffer.h"
#include "wx/app.h"
#include "wx/vector.h"
#ifndef WX_PRECOMP
#endif
@@ -465,10 +466,21 @@ void wxRibbonBar::SetTabCtrlMargins(int left, int right)
RecalculateTabSizes();
}
static int OrderPageTabInfoBySmallWidthAsc(wxRibbonPageTabInfo **first, wxRibbonPageTabInfo **second)
struct PageComparedBySmallWidthAsc
{
return (**first).small_must_have_separator_width - (**second).small_must_have_separator_width;
}
wxEXPLICIT PageComparedBySmallWidthAsc(wxRibbonPageTabInfo* page)
: m_page(page)
{
}
bool operator<(const PageComparedBySmallWidthAsc& other) const
{
return m_page->small_must_have_separator_width
< other.m_page->small_must_have_separator_width;
}
wxRibbonPageTabInfo *m_page;
};
void wxRibbonBar::RecalculateTabSizes()
{
@@ -624,30 +636,27 @@ void wxRibbonBar::RecalculateTabSizes()
if(width >= total_small_width)
{
// Do (2)
wxRibbonPageTabInfoArray sorted_pages;
for(i = 0; i < numtabs; ++i)
{
// Sneaky obj array trickery to not copy the tab descriptors
if (!m_pages.Item(i).shown)
continue;
sorted_pages.Add(&m_pages.Item(i));
}
sorted_pages.Sort(OrderPageTabInfoBySmallWidthAsc);
wxVector<PageComparedBySmallWidthAsc> sorted_pages;
sorted_pages.reserve(numtabs);
for ( i = 0; i < numtabs; ++i )
sorted_pages.push_back(PageComparedBySmallWidthAsc(&m_pages.Item(i)));
wxVectorSort(sorted_pages);
width -= tabsep * (numtabs - 1);
for(i = 0; i < numtabs; ++i)
{
wxRibbonPageTabInfo& info = sorted_pages.Item(i);
if (!info.shown)
wxRibbonPageTabInfo* info = sorted_pages[i].m_page;
if (!info->shown)
continue;
if(info.small_must_have_separator_width * (int)(numtabs - i) <= width)
if(info->small_must_have_separator_width * (int)(numtabs - i) <= width)
{
info.rect.width = info.small_must_have_separator_width;;
info->rect.width = info->small_must_have_separator_width;;
}
else
{
info.rect.width = width / (numtabs - i);
info->rect.width = width / (numtabs - i);
}
width -= info.rect.width;
width -= info->rect.width;
}
for(i = 0; i < numtabs; ++i)
{
@@ -658,7 +667,6 @@ void wxRibbonBar::RecalculateTabSizes()
info.rect.y = y;
info.rect.height = m_tab_height;
x += info.rect.width + tabsep;
sorted_pages.Detach(numtabs - (i + 1));
}
}
else