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CandidateWindow.cpp
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/* DIME IME for Windows 7/8/10/11
BSD 3-Clause License
Copyright (c) 2022, Jeremy Wu
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
//#define DEBUG_PRINT
//#define ALWAYS_SHOW_SCROLL
#include "Globals.h"
#include "BaseWindow.h"
#include "CandidateWindow.h"
#define NO_ANIMATION
#define NO_WINDOW_SHADOW
#define ANIMATION_STEP_TIME 8
#define ANIMATION_TIMER_ID 39773
//+---------------------------------------------------------------------------
//
// ctor
//
//----------------------------------------------------------------------------
CCandidateWindow::CCandidateWindow(_In_ CANDWNDCALLBACK pfnCallback, _In_ void *pv, _In_ CCandidateRange *pIndexRange, _In_ BOOL isStoreAppMode)
{
debugPrint(L"CCandidateWindow::CCandidateWindow() gdiObjects = %d", GetGuiResources(GetCurrentProcess(), GR_GDIOBJECTS));
_brshBkColor = nullptr;
_currentSelection = 0;
_SetTextColor(CANDWND_ITEM_COLOR, GetSysColor(COLOR_WINDOW)); // text color is black
_SetFillColor(GetSysColor(COLOR_3DHIGHLIGHT));
_pIndexRange = pIndexRange;
_pfnCallback = pfnCallback;
_pObj = pv;
_pShadowWnd = nullptr;
_cyRow = CANDWND_ROW_WIDTH;
_cxTitle = 0;
_pVScrollBarWnd = nullptr;
_wndWidth = 0;
_dontAdjustOnEmptyItemPage = FALSE;
_isStoreAppMode = isStoreAppMode;
_fontSize = _TextMetric.tmHeight;
_x = -32768;
_y = -32768;
}
//+---------------------------------------------------------------------------
//
// dtor
//
//----------------------------------------------------------------------------
CCandidateWindow::~CCandidateWindow()
{
if(_brshBkColor) DeleteObject(_brshBkColor);
_ClearList();
_DeleteShadowWnd();
_DeleteVScrollBarWnd();
debugPrint(L"CCandidateWindow::~CCandidateWindow() gdiObjects = %d", GetGuiResources(GetCurrentProcess(), GR_GDIOBJECTS));
}
//+---------------------------------------------------------------------------
//
// _Create
//
// CandidateWinow is the top window
//----------------------------------------------------------------------------
BOOL CCandidateWindow::_Create(_In_ UINT wndWidth, _In_ UINT fontSize, _In_opt_ HWND parentWndHandle)
{
BOOL ret = FALSE;
_wndWidth = wndWidth;
_fontSize = fontSize;
ret = _CreateMainWindow(parentWndHandle);
if (FALSE == ret)
{
goto Exit;
}
#ifndef NO_WINDOW_SHADOW
ret = _CreateBackGroundShadowWindow();
if (FALSE == ret)
{
goto Exit;
}
#endif
ret = _CreateVScrollWindow();
if (FALSE == ret)
{
goto Exit;
}
_ResizeWindow();
Exit:
return TRUE;
}
BOOL CCandidateWindow::_CreateMainWindow(_In_opt_ HWND parentWndHandle)
{
_SetUIWnd(this);
if (!CBaseWindow::_Create(Global::AtomCandidateWindow,
WS_EX_TOPMOST | WS_EX_LAYERED |
WS_EX_TOOLWINDOW,
WS_BORDER | WS_POPUP,
NULL, 0, 0, parentWndHandle))
{
return FALSE;
}
SetLayeredWindowAttributes(_GetWnd(), 0, (255 * 5) / 100, LWA_ALPHA); // animation started from 5% alpha
return TRUE;
}
BOOL CCandidateWindow::_CreateBackGroundShadowWindow()
{
_pShadowWnd = new (std::nothrow) CShadowWindow(this);
if (_pShadowWnd == nullptr)
{
return FALSE;
}
if (!_pShadowWnd->_Create(Global::AtomCandidateShadowWindow,
WS_EX_TOPMOST |
WS_EX_TOOLWINDOW | WS_EX_LAYERED,
WS_DISABLED | WS_POPUP, this))
{
_DeleteShadowWnd();
return FALSE;
}
return TRUE;
}
BOOL CCandidateWindow::_CreateVScrollWindow()
{
BOOL ret = FALSE;
SHELL_MODE shellMode = _isStoreAppMode ? STOREAPP : DESKTOP;
CScrollBarWindowFactory* pFactory = CScrollBarWindowFactory::Instance();
if(pFactory == nullptr) return ret;
_pVScrollBarWnd = pFactory->MakeScrollBarWindow(shellMode);
if (_pVScrollBarWnd == nullptr)
{
_DeleteShadowWnd();
goto Exit;
}
_pVScrollBarWnd->_SetUIWnd(this);
if (!_pVScrollBarWnd->_Create(Global::AtomCandidateScrollBarWindow,
WS_EX_TOPMOST | WS_EX_TOOLWINDOW , WS_CHILD , this))
{
_DeleteVScrollBarWnd();
_DeleteShadowWnd();
goto Exit;
}
ret = TRUE;
Exit:
pFactory->Release();
return ret;
}
void CCandidateWindow::_ResizeWindow()
{
debugPrint(L"CCandidateWindow::_ResizeWindow() _cxTitle = %d", _cxTitle);
if(_pIndexRange == nullptr) return;
int candidateListPageCnt = _pIndexRange->Count();
int VScrollWidth = GetSystemMetrics(SM_CXVSCROLL) * 3/2;
CBaseWindow::_Resize(_x, _y, _cxTitle + VScrollWidth + CANDWND_BORDER_WIDTH*2,
_cyRow * candidateListPageCnt + _cyRow /2 + CANDWND_BORDER_WIDTH *2);
RECT rcCandRect = {0, 0, 0, 0};
_GetClientRect(&rcCandRect);
int left = rcCandRect.right - VScrollWidth;
int top = rcCandRect.top;
int width = VScrollWidth;
int height = rcCandRect.bottom - rcCandRect.top;
if(_pVScrollBarWnd)
_pVScrollBarWnd->_Resize(left, top, width, height);
}
//+---------------------------------------------------------------------------
//
// _Move
//
//----------------------------------------------------------------------------
void CCandidateWindow::_Move(int x, int y)
{
debugPrint(L"CCandidateWindow::_Move() x =%d, y=%d", x,y);
if (_x == x && _y == y) return;
_x = x;
_y = y;
CBaseWindow::_Move(x, y);
#ifdef NO_ANIMATION
SetLayeredWindowAttributes(_GetWnd(), 0, (255 * 95) / 100, LWA_ALPHA);
#else
SetLayeredWindowAttributes(_GetWnd(), 0, 255 * (5 / 100), LWA_ALPHA); // staring from 30% transparent
_animationStage = 10;
_EndTimer(ANIMATION_TIMER_ID);
_StartTimer(ANIMATION_STEP_TIME, ANIMATION_TIMER_ID);
#endif
}
void CCandidateWindow::_OnTimerID(UINT_PTR timerID)
{ //animate the window faded out with layered tranparency
debugPrint(L"CCandidateWindow::_OnTimer(): timerID = %d, _animationStage = %d", timerID, _animationStage);
switch (timerID)
{
case ANIMATION_TIMER_ID:
if(_animationStage)
{
BYTE transparentLevel = (255 * (5 + 9 * (11 - _animationStage))) / 100;
debugPrint(L"CCandidateWindow::_OnTimer() transparentLevel = %d", transparentLevel);
SetLayeredWindowAttributes(_GetWnd(), 0, transparentLevel , LWA_ALPHA);
_StartTimer(ANIMATION_STEP_TIME, ANIMATION_TIMER_ID);
_animationStage --;
}
else
{
_EndTimer(ANIMATION_TIMER_ID);
SetLayeredWindowAttributes(_GetWnd(), 0, (255 * 95) / 100, LWA_ALPHA);
}
break;
}
}
//+---------------------------------------------------------------------------
//
// _Show
//
//----------------------------------------------------------------------------
void CCandidateWindow::_Show(BOOL isShowWnd)
{
if (_pShadowWnd)
_pShadowWnd->_Show(isShowWnd);
if (_pVScrollBarWnd)
#ifdef ALWAYS_SHOW_SCROLL
_pVScrollBarWnd->_Show(isShowWnd && _pVScrollBarWnd->_IsEnabled());
#else
_pVScrollBarWnd->_Show(FALSE);
#endif
CBaseWindow::_Show(isShowWnd);
if (isShowWnd && !_IsCapture())
{
SetCapture(_GetWnd());
}
if (!isShowWnd && _IsCapture())
{
ReleaseCapture();
}
}
//+---------------------------------------------------------------------------
//
// _SetTextColor
// _SetFillColor
//
//----------------------------------------------------------------------------
VOID CCandidateWindow::_SetNumberColor(_In_ COLORREF crColor, _In_ COLORREF crBkColor)
{
_crNumberColor = _AdjustTextColor(crColor, crBkColor);
_crNumberBkColor = crBkColor;
}
VOID CCandidateWindow::_SetTextColor(_In_ COLORREF crColor, _In_ COLORREF crBkColor)
{
_crTextColor = _AdjustTextColor(crColor, crBkColor);
_crBkColor = crBkColor;
}
VOID CCandidateWindow::_SetSelectedTextColor(_In_ COLORREF crColor, _In_ COLORREF crBkColor)
{
_crSelectedTextColor = _AdjustTextColor(crColor, crBkColor);
_crSelectedBkColor = crBkColor;
}
VOID CCandidateWindow::_SetFillColor(_In_ COLORREF fiColor)
{
if(_brshBkColor) DeleteObject(_brshBkColor);
_brshBkColor = CreateSolidBrush(fiColor);
}
//+---------------------------------------------------------------------------
//
// _WindowProcCallback
//
// Cand window proc.
//----------------------------------------------------------------------------
const int PageCountPosition = 1;
const int StringPosition = 2;
LRESULT CALLBACK CCandidateWindow::_WindowProcCallback(_In_ HWND wndHandle, UINT uMsg, _In_ WPARAM wParam, _In_ LPARAM lParam)
{
switch (uMsg)
{
case WM_CREATE:
{
debugPrint(L"CCandidateWindow::_WindowProcCallback():WM_CREATE gdiObjects = %d", GetGuiResources(GetCurrentProcess(), GR_GDIOBJECTS));
HDC dcHandle = nullptr;
dcHandle = GetDC(wndHandle);
if (dcHandle)
{
HFONT hFontOld = (HFONT)SelectObject(dcHandle, Global::defaultlFontHandle);
PWCHAR pwszTestString = new (std::nothrow) WCHAR[_wndWidth + 1];
if (pwszTestString == NULL) return 0;
pwszTestString[0] = L'\0';
for (UINT i = 0; i < _wndWidth; i++) StringCchCatN(pwszTestString, _wndWidth + 1, L"¼e", 1);
SIZE candSize;
GetTextExtentPoint32(dcHandle, pwszTestString, _wndWidth, &candSize); //don't trust the TextMetrics. Measurement the font height and width directly.
delete[]pwszTestString;
_cxTitle = candSize.cx + StringPosition * (candSize.cx / _wndWidth);
_cyRow = candSize.cy * 5 / 4;
SelectObject(dcHandle, hFontOld);
ReleaseDC(wndHandle, dcHandle);
}
debugPrint(L"CCandidateWindow::_WindowProcCallback():WM_CREATE ended. gdiObjects = %d", GetGuiResources(GetCurrentProcess(), GR_GDIOBJECTS));
}
return 0;
case WM_DESTROY:
_DeleteShadowWnd();
return 0;
case WM_WINDOWPOSCHANGED:
{
WINDOWPOS* pWndPos = (WINDOWPOS*)lParam;
// move shadow
if (_pShadowWnd && pWndPos)
{
_pShadowWnd->_OnOwnerWndMoved((pWndPos->flags & SWP_NOSIZE) == 0);
}
// move v-scroll
if (_pVScrollBarWnd && pWndPos)
{
_pVScrollBarWnd->_OnOwnerWndMoved((pWndPos->flags & SWP_NOSIZE) == 0);
}
if(pWndPos)
_FireMessageToLightDismiss(wndHandle, pWndPos);
}
break;
case WM_WINDOWPOSCHANGING:
{
WINDOWPOS* pWndPos = (WINDOWPOS*)lParam;
// show/hide shadow
if (_pShadowWnd && pWndPos)
{
if ((pWndPos->flags & SWP_HIDEWINDOW) != 0)
{
_pShadowWnd->_Show(FALSE);
}
// don't go behaind of shadow
if (((pWndPos->flags & SWP_NOZORDER) == 0) && (pWndPos->hwndInsertAfter == _pShadowWnd->_GetWnd()))
{
pWndPos->flags |= SWP_NOZORDER;
}
_pShadowWnd->_OnOwnerWndMoved((pWndPos->flags & SWP_NOSIZE) == 0);
}
// show/hide v-scroll
if (_pVScrollBarWnd && pWndPos)
{
if ((pWndPos->flags & SWP_HIDEWINDOW) != 0)
{
_pVScrollBarWnd->_Show(FALSE);
}
_pVScrollBarWnd->_OnOwnerWndMoved((pWndPos->flags & SWP_NOSIZE) == 0);
}
}
break;
case WM_SHOWWINDOW:
// show/hide shadow
if (_pShadowWnd)
{
_pShadowWnd->_Show((BOOL)wParam);
}
if (_pVScrollBarWnd)
{
_pVScrollBarWnd->_Show((BOOL)wParam);
}
break;
case WM_PAINT:
{
debugPrint(L"CCandidateWindow::_WindowProcCallback():WM_PAINT gdiObjects = %d", GetGuiResources(GetCurrentProcess(), GR_GDIOBJECTS));
HDC dcHandle = nullptr;
PAINTSTRUCT ps;
dcHandle = BeginPaint(wndHandle, &ps);
_DrawBorder(wndHandle, CANDWND_BORDER_WIDTH);
_OnPaint(dcHandle, &ps);
EndPaint(wndHandle, &ps);
ReleaseDC(wndHandle, dcHandle);
debugPrint(L"CCandidateWindow::_WindowProcCallback():WM_PAINT ended. gdiObjects = %d", GetGuiResources(GetCurrentProcess(), GR_GDIOBJECTS));
}
return 0;
case WM_SETCURSOR:
{
POINT cursorPoint;
GetCursorPos(&cursorPoint);
MapWindowPoints(NULL, wndHandle, &cursorPoint, 1);
// handle mouse message
_HandleMouseMsg(HIWORD(lParam), cursorPoint);
}
return 1;
case WM_MOUSEMOVE:
case WM_LBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_LBUTTONUP:
case WM_MBUTTONUP:
case WM_RBUTTONUP:
{
POINT point;
POINTSTOPOINT(point, MAKEPOINTS(lParam));
// handle mouse message
_HandleMouseMsg(uMsg, point);
}
// we processes this message, it should return zero.
return 0;
case WM_MOUSEACTIVATE:
{
WORD mouseEvent = HIWORD(lParam);
if (mouseEvent == WM_LBUTTONDOWN ||
mouseEvent == WM_RBUTTONDOWN ||
mouseEvent == WM_MBUTTONDOWN)
{
return MA_NOACTIVATE;
}
}
break;
case WM_POINTERACTIVATE:
return PA_NOACTIVATE;
case WM_VSCROLL:
_OnVScroll(LOWORD(wParam), HIWORD(wParam));
return 0;
}
return DefWindowProc(wndHandle, uMsg, wParam, lParam);
}
//+---------------------------------------------------------------------------
//
// _HandleMouseMsg
//
//----------------------------------------------------------------------------
void CCandidateWindow::_HandleMouseMsg(_In_ UINT mouseMsg, _In_ POINT point)
{
switch (mouseMsg)
{
case WM_MOUSEMOVE:
_OnMouseMove(point);
break;
case WM_LBUTTONDOWN:
_OnLButtonDown(point);
break;
case WM_LBUTTONUP:
_OnLButtonUp(point);
break;
}
}
//+---------------------------------------------------------------------------
//
// _OnPaint
//
//----------------------------------------------------------------------------
void CCandidateWindow::_OnPaint(_In_ HDC dcHandle, _In_ PAINTSTRUCT *pPaintStruct)
{
debugPrint(L"CCandidateWindow::_OnPaint()\n");
if(pPaintStruct == nullptr) return;
SetBkMode(dcHandle, TRANSPARENT);
HFONT hFontOld = (HFONT)SelectObject(dcHandle, Global::defaultlFontHandle);
if(_brshBkColor)
{
FillRect(dcHandle, &pPaintStruct->rcPaint,_brshBkColor);
}
UINT currentPageIndex = 0;
UINT currentPage = 0;
if (FAILED(_GetCurrentPage(¤tPage)))
{
goto cleanup;
}
_AdjustPageIndex(currentPage, currentPageIndex);
_DrawList(dcHandle, currentPageIndex, &pPaintStruct->rcPaint);
cleanup:
SelectObject(dcHandle, hFontOld);
}
//+---------------------------------------------------------------------------
//
// _OnLButtonDown
//
//----------------------------------------------------------------------------
void CCandidateWindow::_OnLButtonDown(POINT pt)
{
if(_pIndexRange == nullptr) return;
RECT rcWindow = {0, 0, 0, 0};;
_GetClientRect(&rcWindow);
int cyLine = _cyRow;
UINT candidateListPageCnt = _pIndexRange->Count();
UINT index = 0;
int currentPage = 0;
if (FAILED(_GetCurrentPage(¤tPage)))
{
return;
}
// Hit test on list items
index = *_PageIndex.GetAt(currentPage);
RECT rc = {0, 0, 0, 0};
rc.left = rcWindow.left + PageCountPosition* _TextMetric.tmAveCharWidth;
rc.right = rcWindow.right - GetSystemMetrics(SM_CXVSCROLL) * 3/2 - CANDWND_BORDER_WIDTH;
for (UINT pageCount = 0; (index < _candidateList.Count()) && (pageCount < candidateListPageCnt); index++, pageCount++)
{
rc.top = rcWindow.top + (pageCount * cyLine);
rc.bottom = rcWindow.top + ((pageCount + 1) * cyLine);
if (PtInRect(&rc, pt) && _pfnCallback)
{
SetCursor(LoadCursor(NULL, IDC_HAND));
_currentSelection = index;
_pfnCallback(_pObj, CANDWND_ACTION::CAND_ITEM_SELECT);
return;
}
}
SetCursor(LoadCursor(NULL, IDC_ARROW));
if (_pVScrollBarWnd && _pVScrollBarWnd->_IsEnabled())
{
rc = {0, 0, 0, 0};
_pVScrollBarWnd->_GetClientRect(&rc);
MapWindowPoints(_GetWnd(), _pVScrollBarWnd->_GetWnd(), &pt, 1);
if (PtInRect(&rc, pt))
{
_pVScrollBarWnd->_OnLButtonDown(pt);
return;
}
}
_pfnCallback(_pObj, CANDWND_ACTION::CAND_CANCEL);
}
//+---------------------------------------------------------------------------
//
// _OnLButtonUp
//
//----------------------------------------------------------------------------
void CCandidateWindow::_OnLButtonUp(POINT pt)
{
if (nullptr == _pVScrollBarWnd)
{
return;
}
RECT rc = {0, 0, 0, 0};
_pVScrollBarWnd->_GetClientRect(&rc);
MapWindowPoints(_GetWnd(), _pVScrollBarWnd->_GetWnd(), &pt, 1);
if (_IsCapture())
{
_pVScrollBarWnd->_OnLButtonUp(pt);
}
else if (PtInRect(&rc, pt))
{
_pVScrollBarWnd->_OnLButtonUp(pt);
}
}
//+---------------------------------------------------------------------------
//
// _OnMouseMove
//
//----------------------------------------------------------------------------
void CCandidateWindow::_OnMouseMove(POINT pt)
{
if (!_IsCapture())
{
SetCapture(_GetWnd());
}
RECT rcWindow = { 0, 0, 0, 0 }, rc = { 0, 0, 0, 0 };
_GetClientRect(&rcWindow);
#ifndef ALWAYS_SHOW_SCROLL
if (PtInRect(&rcWindow, pt))
{
if(_pVScrollBarWnd)
_pVScrollBarWnd->_Show(_pVScrollBarWnd->_IsEnabled());
}
else
{
if (_pVScrollBarWnd)
_pVScrollBarWnd->_Show(FALSE);
}
#endif
rc.left = rcWindow.left;
rc.right = rcWindow.right - GetSystemMetrics(SM_CXVSCROLL) * 3 / 2 - CANDWND_BORDER_WIDTH;
rc.top = rcWindow.top;
rc.bottom = rcWindow.bottom;
if (PtInRect(&rc, pt))
{
SetCursor(LoadCursor(NULL, IDC_HAND));
}
else
{
SetCursor(LoadCursor(NULL, IDC_ARROW));
if (_pVScrollBarWnd)
{
_pVScrollBarWnd->_GetClientRect(&rc);
MapWindowPoints(_GetWnd(), _pVScrollBarWnd->_GetWnd(), &pt, 1);
if (PtInRect(&rc, pt))
{
_pVScrollBarWnd->_OnMouseMove(pt);
}
}
}
}
//+---------------------------------------------------------------------------
//
// _OnVScroll
//
//----------------------------------------------------------------------------
void CCandidateWindow::_OnVScroll(DWORD dwSB, _In_ DWORD nPos)
{
switch (dwSB)
{
case SB_LINEDOWN:
_SetSelectionOffset(+1);
_InvalidateRect();
break;
case SB_LINEUP:
_SetSelectionOffset(-1);
_InvalidateRect();
break;
case SB_PAGEDOWN:
_MovePage(+1, FALSE);
_InvalidateRect();
break;
case SB_PAGEUP:
_MovePage(-1, FALSE);
_InvalidateRect();
break;
case SB_THUMBPOSITION:
_SetSelection(nPos, FALSE);
_InvalidateRect();
break;
}
}
//+---------------------------------------------------------------------------
//
// _DrawList
//
//----------------------------------------------------------------------------
void CCandidateWindow::_DrawList(_In_ HDC dcHandle, _In_ UINT currentPageIndex, _In_ RECT *prc)
{
debugPrint(L"CCandidateWindow::_DrawList(), _wndWidth = %d", _wndWidth);
if(_pIndexRange == nullptr || prc == nullptr) return;
int indexInPage = 0;
int candidateListPageCnt = _pIndexRange->Count();
int VScrollWidth = GetSystemMetrics(SM_CXVSCROLL) *3/2;
RECT rc;
const size_t numStringLen = 2;
GetTextMetrics(dcHandle, &_TextMetric);
SIZE candSize = { 0,0 };
PWCHAR pwszTestString = new (std::nothrow) WCHAR[_wndWidth + 1];
if (pwszTestString)
{
pwszTestString[0] = L'\0';
for (UINT i = 0; i < _wndWidth; i++) StringCchCatN(pwszTestString, _wndWidth + 1, L"¼e", 1);
GetTextExtentPoint32(dcHandle, pwszTestString, _wndWidth, &candSize); //don't trust the TextMetrics. Measurement the font height and width directly.
delete[]pwszTestString;
}
int cxLine = max((int)_TextMetric.tmAveCharWidth, (int)candSize.cx / (int)_wndWidth);
int cyLine = candSize.cy * 5 / 4;
int fistLineOffset = cyLine / 4;
_cxTitle = candSize.cx + StringPosition * cxLine;
_cyRow = cyLine;
int cyOffset = candSize.cy / 8 + fistLineOffset; //offset in line + blank before 1st line.
for (;
(currentPageIndex < _candidateList.Count()) && (indexInPage < candidateListPageCnt);
currentPageIndex++, indexInPage++)
{
WCHAR wszNumString[numStringLen] = {'\0'};
CCandidateListItem* pItemList = nullptr;
rc.top = prc->top + indexInPage * cyLine + fistLineOffset;
rc.bottom = rc.top + cyLine;
rc.left = prc->left + PageCountPosition * cxLine;
rc.right = prc->left + StringPosition * cxLine;
// Number Font Color And BK
SetTextColor(dcHandle, _crNumberColor);
SetBkColor(dcHandle, _crNumberBkColor);
// Print cand list index
StringCchPrintf(wszNumString, ARRAYSIZE(wszNumString), L"%c", _pIndexRange->GetAt(indexInPage)->CandIndex);
ExtTextOut(dcHandle, PageCountPosition * cxLine, indexInPage * cyLine + cyOffset, ETO_OPAQUE, &rc, wszNumString, numStringLen, NULL);
rc.left = prc->left + StringPosition * cxLine;
rc.right = prc->right - VScrollWidth;
// Candidate Font Color And BK
if (_currentSelection != (INT)currentPageIndex)
{
SetTextColor(dcHandle, _crTextColor);
SetBkColor(dcHandle, _crBkColor);
}
else
{
SetTextColor(dcHandle, _crSelectedTextColor);
SetBkColor(dcHandle, _crSelectedBkColor);
}
pItemList = _candidateList.GetAt(currentPageIndex);
if(pItemList == nullptr) continue;
SIZE size;
WCHAR itemText[MAX_CAND_ITEM_LENGTH + 3] = { '\0' };
int itemLength = (int)pItemList->_ItemString.GetLength();
if (itemLength > MAX_CAND_ITEM_LENGTH) // if the legnth of item text > MAX_CAND_ITEM_LENGTH (13) , truncate the item text as "First 6 chars of itemtext"+"..."+"last 6 chars of itemtext"
{
StringCchCatN(itemText, MAX_CAND_ITEM_LENGTH + 3, pItemList->_ItemString.Get(), 6);
StringCchCatN(itemText, MAX_CAND_ITEM_LENGTH + 3, L"¡K", 1);
StringCchCatN(itemText, MAX_CAND_ITEM_LENGTH + 3, (pItemList->_ItemString.Get() + itemLength - 6), 6);
itemLength = MAX_CAND_ITEM_LENGTH;
}
else
StringCchCopyN(itemText, MAX_CAND_ITEM_LENGTH + 3, pItemList->_ItemString.Get(), itemLength);
if (itemLength > (int)_wndWidth)
{
GetTextExtentPoint32(dcHandle, pItemList->_ItemString.Get(), (int)pItemList->_ItemString.GetLength(), &size);
if (_cxTitle < (int)size.cx + StringPosition * cxLine)
{
_cxTitle = size.cx + StringPosition * cxLine;
_wndWidth = itemLength;
}
}
ExtTextOut(dcHandle, StringPosition * cxLine, indexInPage * cyLine + cyOffset, ETO_OPAQUE, &rc, itemText, (DWORD)itemLength, NULL);
}
for (; (indexInPage < candidateListPageCnt); indexInPage++)
{
rc.top = prc->top + indexInPage * cyLine + fistLineOffset;
rc.bottom = rc.top + cyLine;
rc.left = prc->left + PageCountPosition * cxLine;
rc.right = prc->left + (PageCountPosition+1) * cxLine;
if(_brshBkColor) FillRect(dcHandle, &rc, _brshBkColor);
}
if(_cxTitle != prc->right - prc->left - VScrollWidth) _ResizeWindow();
}
//+---------------------------------------------------------------------------
//
// _DrawBorder
//
//----------------------------------------------------------------------------
void CCandidateWindow::_DrawBorder(_In_ HWND wndHandle, _In_ int cx)
{
RECT rcWnd;
HDC dcHandle = GetWindowDC(wndHandle);
GetWindowRect(wndHandle, &rcWnd);
// zero based
OffsetRect(&rcWnd, -rcWnd.left, -rcWnd.top);
HPEN hPen = CreatePen(PS_SOLID, cx, CANDWND_BORDER_COLOR);
HPEN hPenOld = (HPEN)SelectObject(dcHandle, hPen);
HBRUSH hBorderBrush = (HBRUSH)GetStockObject(NULL_BRUSH);
HBRUSH hBorderBrushOld = (HBRUSH)SelectObject(dcHandle, hBorderBrush);
Rectangle(dcHandle, rcWnd.left, rcWnd.top, rcWnd.right, rcWnd.bottom);
SelectObject(dcHandle, hPenOld);
SelectObject(dcHandle, hBorderBrushOld);
DeleteObject(hPen);
DeleteObject(hBorderBrush);
ReleaseDC(wndHandle, dcHandle);
}
//+---------------------------------------------------------------------------
//
// _AddString
//
//----------------------------------------------------------------------------
void CCandidateWindow::_AddString(_Inout_ CCandidateListItem *pCandidateItem, _In_ BOOL isAddFindKeyCode)
{
debugPrint(L"CCandidateWindow::_AddString()");
if(pCandidateItem == nullptr) return;
DWORD_PTR dwItemString = pCandidateItem->_ItemString.GetLength();
const WCHAR* pwchString = nullptr;
if (dwItemString)
{
pwchString = new (std::nothrow) WCHAR[ dwItemString ];
if (!pwchString)
{
return;
}
memcpy((void*)pwchString, pCandidateItem->_ItemString.Get(), dwItemString * sizeof(WCHAR));
}
DWORD_PTR itemWildcard = pCandidateItem->_FindKeyCode.GetLength();
const WCHAR* pwchWildcard = nullptr;
if (itemWildcard && isAddFindKeyCode)
{
pwchWildcard = new (std::nothrow) WCHAR[ itemWildcard ];
if (!pwchWildcard)
{
if (pwchString)
{
delete [] pwchString;
}
return;
}
memcpy((void*)pwchWildcard, pCandidateItem->_FindKeyCode.Get(), itemWildcard * sizeof(WCHAR));
}
CCandidateListItem* pLI = nullptr;
pLI = _candidateList.Append();
if (!pLI)
{
if (pwchString)
{
delete [] pwchString;
pwchString = nullptr;
}
if (pwchWildcard)
{
delete [] pwchWildcard;
pwchWildcard = nullptr;
}
return;
}
if (pwchString && pLI)
{
pLI->_ItemString.Set(pwchString, dwItemString);
}
if (pwchWildcard)
{
pLI->_FindKeyCode.Set(pwchWildcard, itemWildcard);
}
#ifndef ALWAYS_SHOW_SCROLL
if(_pVScrollBarWnd) _pVScrollBarWnd->_Show(FALSE); // hide the scrollbar in the beginning
#endif
return;
}
//+---------------------------------------------------------------------------
//
// _ClearList
//
//----------------------------------------------------------------------------
void CCandidateWindow::_ClearList()
{
for (UINT index = 0; index < _candidateList.Count(); index++)
{
CCandidateListItem* pItemList = nullptr;
pItemList = _candidateList.GetAt(index);