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467cab8148478ada5ce10b1049018dbeeac16c55
duilib/DuiLib/Layout/UIHorizontalLayout.cpp
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daviyang35 467cab8148 Duilib官方迁移到Gitbub，没有任何新增功能与修改，仅为方便需要迁出代码的人 
Duilib暂不会有新特性增加，但已经准备一段时间修改代码目录管理结构，重构Demo
闲置半年多未更新一方面忙于生计，也源于提高内功
感谢Duilib原作者同意迁移SVN官方地址，便于社区维护
最后特别感谢【Duilib官方交流群3】活跃开发者们的帮助指导，为Duilib的重构提供了很多帮助，也为我个人成长提供指导
2014-07-28 21:58:31 +08:00

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8.8 KiB
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#include "stdafx.h"
#include "UIHorizontalLayout.h"
namespace DuiLib
{
CHorizontalLayoutUI::CHorizontalLayoutUI() : m_iSepWidth(0), m_uButtonState(0), m_bImmMode(false)
{
ptLastMouse.x = ptLastMouse.y = 0;
::ZeroMemory(&m_rcNewPos, sizeof(m_rcNewPos));
}
LPCTSTR CHorizontalLayoutUI::GetClass() const
{
return _T("HorizontalLayoutUI");
}
LPVOID CHorizontalLayoutUI::GetInterface(LPCTSTR pstrName)
{
if( _tcscmp(pstrName, DUI_CTR_HORIZONTALLAYOUT) == 0 ) return static_cast<CHorizontalLayoutUI*>(this);
return CContainerUI::GetInterface(pstrName);
}
UINT CHorizontalLayoutUI::GetControlFlags() const
{
if( IsEnabled() && m_iSepWidth != 0 ) return UIFLAG_SETCURSOR;
else return 0;
}
void CHorizontalLayoutUI::SetPos(RECT rc)
{
CControlUI::SetPos(rc);
rc = m_rcItem;
// Adjust for inset
rc.left += m_rcInset.left;
rc.top += m_rcInset.top;
rc.right -= m_rcInset.right;
rc.bottom -= m_rcInset.bottom;
if( m_items.GetSize() == 0) {
ProcessScrollBar(rc, 0, 0);
return;
}
if( m_pVerticalScrollBar && m_pVerticalScrollBar->IsVisible() ) rc.right -= m_pVerticalScrollBar->GetFixedWidth();
if( m_pHorizontalScrollBar && m_pHorizontalScrollBar->IsVisible() ) rc.bottom -= m_pHorizontalScrollBar->GetFixedHeight();
// Determine the width of elements that are sizeable
SIZE szAvailable = { rc.right - rc.left, rc.bottom - rc.top };
if( m_pHorizontalScrollBar && m_pHorizontalScrollBar->IsVisible() )
szAvailable.cx += m_pHorizontalScrollBar->GetScrollRange();
int nAdjustables = 0;
int cxFixed = 0;
int nEstimateNum = 0;
for( int it1 = 0; it1 < m_items.GetSize(); it1++ ) {
CControlUI* pControl = static_cast<CControlUI*>(m_items[it1]);
if( !pControl->IsVisible() ) continue;
if( pControl->IsFloat() ) continue;
SIZE sz = pControl->EstimateSize(szAvailable);
if( sz.cx == 0 ) {
nAdjustables++;
}
else {
if( sz.cx < pControl->GetMinWidth() ) sz.cx = pControl->GetMinWidth();
if( sz.cx > pControl->GetMaxWidth() ) sz.cx = pControl->GetMaxWidth();
}
cxFixed += sz.cx + pControl->GetPadding().left + pControl->GetPadding().right;
nEstimateNum++;
}
cxFixed += (nEstimateNum - 1) * m_iChildPadding;
int cxExpand = 0;
int cxNeeded = 0;
if( nAdjustables > 0 ) cxExpand = MAX(0, (szAvailable.cx - cxFixed) / nAdjustables);
// Position the elements
SIZE szRemaining = szAvailable;
int iPosX = rc.left;
if( m_pHorizontalScrollBar && m_pHorizontalScrollBar->IsVisible() ) {
iPosX -= m_pHorizontalScrollBar->GetScrollPos();
}
int iAdjustable = 0;
int cxFixedRemaining = cxFixed;
for( int it2 = 0; it2 < m_items.GetSize(); it2++ ) {
CControlUI* pControl = static_cast<CControlUI*>(m_items[it2]);
if( !pControl->IsVisible() ) continue;
if( pControl->IsFloat() ) {
SetFloatPos(it2);
continue;
}
RECT rcPadding = pControl->GetPadding();
szRemaining.cx -= rcPadding.left;
SIZE sz = pControl->EstimateSize(szRemaining);
if( sz.cx == 0 ) {
iAdjustable++;
sz.cx = cxExpand;
// Distribute remaining to last element (usually round-off left-overs)
if( iAdjustable == nAdjustables ) {
sz.cx = MAX(0, szRemaining.cx - rcPadding.right - cxFixedRemaining);
}
if( sz.cx < pControl->GetMinWidth() ) sz.cx = pControl->GetMinWidth();
if( sz.cx > pControl->GetMaxWidth() ) sz.cx = pControl->GetMaxWidth();
}
else {
if( sz.cx < pControl->GetMinWidth() ) sz.cx = pControl->GetMinWidth();
if( sz.cx > pControl->GetMaxWidth() ) sz.cx = pControl->GetMaxWidth();
cxFixedRemaining -= sz.cx;
}
sz.cy = pControl->GetFixedHeight();
if( sz.cy == 0 ) sz.cy = rc.bottom - rc.top - rcPadding.top - rcPadding.bottom;
if( sz.cy < 0 ) sz.cy = 0;
if( sz.cy < pControl->GetMinHeight() ) sz.cy = pControl->GetMinHeight();
if( sz.cy > pControl->GetMaxHeight() ) sz.cy = pControl->GetMaxHeight();
RECT rcCtrl = { iPosX + rcPadding.left, rc.top + rcPadding.top, iPosX + sz.cx + rcPadding.left + rcPadding.right, rc.top + rcPadding.top + sz.cy};
pControl->SetPos(rcCtrl);
iPosX += sz.cx + m_iChildPadding + rcPadding.left + rcPadding.right;
cxNeeded += sz.cx + rcPadding.left + rcPadding.right;
szRemaining.cx -= sz.cx + m_iChildPadding + rcPadding.right;
}
cxNeeded += (nEstimateNum - 1) * m_iChildPadding;
// Process the scrollbar
ProcessScrollBar(rc, cxNeeded, 0);
}
void CHorizontalLayoutUI::DoPostPaint(HDC hDC, const RECT& rcPaint)
{
if( (m_uButtonState & UISTATE_CAPTURED) != 0 && !m_bImmMode ) {
RECT rcSeparator = GetThumbRect(true);
CRenderEngine::DrawColor(hDC, rcSeparator, 0xAA000000);
}
}
void CHorizontalLayoutUI::SetSepWidth(int iWidth)
{
m_iSepWidth = iWidth;
}
int CHorizontalLayoutUI::GetSepWidth() const
{
return m_iSepWidth;
}
void CHorizontalLayoutUI::SetSepImmMode(bool bImmediately)
{
if( m_bImmMode == bImmediately ) return;
if( (m_uButtonState & UISTATE_CAPTURED) != 0 && !m_bImmMode && m_pManager != NULL ) {
m_pManager->RemovePostPaint(this);
}
m_bImmMode = bImmediately;
}
bool CHorizontalLayoutUI::IsSepImmMode() const
{
return m_bImmMode;
}
void CHorizontalLayoutUI::SetAttribute(LPCTSTR pstrName, LPCTSTR pstrValue)
{
if( _tcscmp(pstrName, _T("sepwidth")) == 0 ) SetSepWidth(_ttoi(pstrValue));
else if( _tcscmp(pstrName, _T("sepimm")) == 0 ) SetSepImmMode(_tcscmp(pstrValue, _T("true")) == 0);
else CContainerUI::SetAttribute(pstrName, pstrValue);
}
void CHorizontalLayoutUI::DoEvent(TEventUI& event)
{
if( m_iSepWidth != 0 ) {
if( event.Type == UIEVENT_BUTTONDOWN && IsEnabled() )
{
RECT rcSeparator = GetThumbRect(false);
if( ::PtInRect(&rcSeparator, event.ptMouse) ) {
m_uButtonState |= UISTATE_CAPTURED;
ptLastMouse = event.ptMouse;
m_rcNewPos = m_rcItem;
if( !m_bImmMode && m_pManager ) m_pManager->AddPostPaint(this);
return;
}
}
if( event.Type == UIEVENT_BUTTONUP )
{
if( (m_uButtonState & UISTATE_CAPTURED) != 0 ) {
m_uButtonState &= ~UISTATE_CAPTURED;
m_rcItem = m_rcNewPos;
if( !m_bImmMode && m_pManager ) m_pManager->RemovePostPaint(this);
NeedParentUpdate();
return;
}
}
if( event.Type == UIEVENT_MOUSEMOVE )
{
if( (m_uButtonState & UISTATE_CAPTURED) != 0 ) {
LONG cx = event.ptMouse.x - ptLastMouse.x;
ptLastMouse = event.ptMouse;
RECT rc = m_rcNewPos;
if( m_iSepWidth >= 0 ) {
if( cx > 0 && event.ptMouse.x < m_rcNewPos.right - m_iSepWidth ) return;
if( cx < 0 && event.ptMouse.x > m_rcNewPos.right ) return;
rc.right += cx;
if( rc.right - rc.left <= GetMinWidth() ) {
if( m_rcNewPos.right - m_rcNewPos.left <= GetMinWidth() ) return;
rc.right = rc.left + GetMinWidth();
}
if( rc.right - rc.left >= GetMaxWidth() ) {
if( m_rcNewPos.right - m_rcNewPos.left >= GetMaxWidth() ) return;
rc.right = rc.left + GetMaxWidth();
}
}
else {
if( cx > 0 && event.ptMouse.x < m_rcNewPos.left ) return;
if( cx < 0 && event.ptMouse.x > m_rcNewPos.left - m_iSepWidth ) return;
rc.left += cx;
if( rc.right - rc.left <= GetMinWidth() ) {
if( m_rcNewPos.right - m_rcNewPos.left <= GetMinWidth() ) return;
rc.left = rc.right - GetMinWidth();
}
if( rc.right - rc.left >= GetMaxWidth() ) {
if( m_rcNewPos.right - m_rcNewPos.left >= GetMaxWidth() ) return;
rc.left = rc.right - GetMaxWidth();
}
}
CDuiRect rcInvalidate = GetThumbRect(true);
m_rcNewPos = rc;
m_cxyFixed.cx = m_rcNewPos.right - m_rcNewPos.left;
if( m_bImmMode ) {
m_rcItem = m_rcNewPos;
NeedParentUpdate();
}
else {
rcInvalidate.Join(GetThumbRect(true));
rcInvalidate.Join(GetThumbRect(false));
if( m_pManager ) m_pManager->Invalidate(rcInvalidate);
}
return;
}
}
if( event.Type == UIEVENT_SETCURSOR )
{
RECT rcSeparator = GetThumbRect(false);
if( IsEnabled() && ::PtInRect(&rcSeparator, event.ptMouse) ) {
::SetCursor(::LoadCursor(NULL, MAKEINTRESOURCE(IDC_SIZEWE)));
return;
}
}
}
CContainerUI::DoEvent(event);
}
RECT CHorizontalLayoutUI::GetThumbRect(bool bUseNew) const
{
if( (m_uButtonState & UISTATE_CAPTURED) != 0 && bUseNew) {
if( m_iSepWidth >= 0 ) return CDuiRect(m_rcNewPos.right - m_iSepWidth, m_rcNewPos.top, m_rcNewPos.right, m_rcNewPos.bottom);
else return CDuiRect(m_rcNewPos.left, m_rcNewPos.top, m_rcNewPos.left - m_iSepWidth, m_rcNewPos.bottom);
}
else {
if( m_iSepWidth >= 0 ) return CDuiRect(m_rcItem.right - m_iSepWidth, m_rcItem.top, m_rcItem.right, m_rcItem.bottom);
else return CDuiRect(m_rcItem.left, m_rcItem.top, m_rcItem.left - m_iSepWidth, m_rcItem.bottom);
}
}
}
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