Source code of Windows XP (NT5)
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//-----------------------------------------------------------------------------
// File: flexinfobox.cpp
//
// Desc: Implements a simple text box that displays a text string.
// CFlexInfoBox is derived from CFlexWnd. It is used by the page
// for displaying direction throughout the UI. The strings are
// stored as resources. The class has a static buffer which will
// be filled with the string by the resource API when needed.
//
// Copyright (C) 1999-2000 Microsoft Corporation. All Rights Reserved.
//-----------------------------------------------------------------------------
#include "common.hpp"
CFlexInfoBox::CFlexInfoBox() :
m_iCurIndex(-1),
m_rgbText(RGB(255,255,255)),
m_rgbBk(RGB(0,0,0)),
m_rgbSelText(RGB(0,0,255)),
m_rgbSelBk(RGB(0,0,0)),
m_rgbFill(RGB(0,0,255)),
m_rgbLine(RGB(0,255,255)),
m_hFont(NULL),
m_bVertSB(FALSE),
m_nSBWidth(11)
{
m_TextRect.top = 0;
m_TextRect.left = 0;
m_TextRect.bottom = 0;
m_TextRect.right = 0;
}
CFlexInfoBox::~CFlexInfoBox()
{
}
BOOL CFlexInfoBox::Create(HWND hParent, const RECT &rect, BOOL bVisible)
{
if (!CFlexWnd::Create(hParent, rect, bVisible))
return FALSE;
FLEXSCROLLBARCREATESTRUCT sbcs;
sbcs.dwSize = sizeof(FLEXSCROLLBARCREATESTRUCT);
sbcs.dwFlags = FSBF_VERT;
sbcs.min = 0;
sbcs.max = 3;
sbcs.page = 1;
sbcs.pos = 1;
sbcs.hWndParent = m_hWnd;
sbcs.hWndNotify = m_hWnd;
RECT rc = {0, 0, 1, 1};
sbcs.rect = rc;
sbcs.bVisible = FALSE;
return m_VertSB.Create(&sbcs);
}
void CFlexInfoBox::SetText(int iIndex)
{
if (iIndex == m_iCurIndex)
return;
// Load the string from resource
LoadString(g_hModule, iIndex, m_tszText, MAX_PATH);
// Calculate the rectangle for text
RECT titlerc;
m_TextRect = g_InfoWndRect;
OffsetRect(&m_TextRect, -m_TextRect.left, -m_TextRect.top);
InflateRect(&m_TextRect, -1, -1);
titlerc = m_TextRect;
HDC hDC = CreateCompatibleDC(NULL);
if (hDC)
{
TCHAR tszResourceString[MAX_PATH];
LoadString(g_hModule, IDS_INFO_TITLE, tszResourceString, MAX_PATH);
DrawText(hDC, tszResourceString, -1, &titlerc, DT_CENTER|DT_NOPREFIX|DT_CALCRECT);
m_TextRect.top = titlerc.bottom + 1;
m_TextWinRect = m_TextRect;
DrawText(hDC, m_tszText, -1, &m_TextRect, DT_CENTER|DT_NOPREFIX|DT_CALCRECT|DT_WORDBREAK);
if (m_TextRect.bottom + 1 > g_InfoWndRect.bottom - g_InfoWndRect.top)
{
// Text too long. We need a scroll bar.
m_TextRect.right -= m_nSBWidth;
DrawText(hDC, m_tszText, -1, &m_TextRect, DT_CENTER|DT_NOPREFIX|DT_CALCRECT|DT_WORDBREAK);
SetVertSB(TRUE);
} else
SetVertSB(FALSE);
DeleteDC(hDC);
}
m_iCurIndex = iIndex;
Invalidate();
}
void CFlexInfoBox::SetFont(HFONT hFont)
{
m_hFont = hFont;
if (m_hWnd == NULL)
return;
Invalidate();
}
void CFlexInfoBox::SetColors(COLORREF text, COLORREF bk, COLORREF seltext, COLORREF selbk, COLORREF fill, COLORREF line)
{
m_rgbText = text;
m_rgbBk = bk;
m_rgbSelText = seltext;
m_rgbSelBk = selbk;
m_rgbFill = fill;
m_rgbLine = line;
m_VertSB.SetColors(m_rgbBk, m_rgbFill, m_rgbLine);
Invalidate();
}
void CFlexInfoBox::SetRect()
{
if (m_hWnd == NULL)
return;
RECT rect = GetRect();
SetWindowPos(m_hWnd, NULL, rect.left, rect.top, rect.right, rect.bottom, SWP_NOZORDER | SWP_NOMOVE);
}
RECT CFlexInfoBox::GetRect(const RECT &rect)
{
int h = GetTextHeight(m_hFont);
RECT ret = {rect.left, rect.top, rect.right, rect.top + h + 2};
return ret;
}
RECT CFlexInfoBox::GetRect()
{
RECT rect;
GetClientRect(&rect);
return GetRect(rect);
}
void CFlexInfoBox::OnPaint(HDC hDC)
{
HDC hBDC = NULL, hODC = NULL;
CBitmap *pbm = NULL;
if (!InRenderMode())
{
hODC = hDC;
pbm = CBitmap::Create(GetClientSize(), RGB(0,0,0), hDC);
if (pbm != NULL)
{
hBDC = pbm->BeginPaintInto();
if (hBDC != NULL)
{
hDC = hBDC;
}
}
}
InternalPaint(hDC);
if (!InRenderMode())
{
if (pbm != NULL)
{
if (hBDC != NULL)
{
pbm->EndPaintInto(hBDC);
pbm->Draw(hODC);
}
delete pbm;
}
}
}
void CFlexInfoBox::InternalPaint(HDC hDC)
{
TCHAR tszResourceString[MAX_PATH];
HGDIOBJ hPen = (HGDIOBJ)CreatePen(PS_SOLID, 1, m_rgbLine);
if (hPen != NULL)
{
HGDIOBJ hOldPen = SelectObject(hDC, hPen);
HGDIOBJ hBrush = (HGDIOBJ)CreateSolidBrush(m_rgbBk);
if (hBrush != NULL)
{
HGDIOBJ hOldBrush = SelectObject(hDC, hBrush);
RECT rect = {0,0,0,0}, titlerc;
GetClientRect(&rect);
titlerc = rect;
Rectangle(hDC, rect.left, rect.top, rect.right, rect.bottom);
InflateRect(&rect, -1, -1);
SetBkMode(hDC, TRANSPARENT);
LoadString(g_hModule, IDS_INFO_TITLE, tszResourceString, MAX_PATH);
// Draw the message text
SetTextColor(hDC, m_rgbText);
rect = m_TextRect;
// Offset the rectangle to account for scroll bar
if (m_bVertSB)
{
OffsetRect(&rect, 0, -m_VertSB.GetPos());
}
DrawText(hDC, m_tszText, -1, &rect, DT_LEFT|DT_NOPREFIX|DT_WORDBREAK);
GetClientRect(&rect);
InflateRect(&rect, -1, -1);
SetTextColor(hDC, m_rgbLine); // User line color for Information title
// Get the title area rantangle
DrawText(hDC, tszResourceString, -1, &titlerc, DT_CENTER|DT_NOPREFIX|DT_CALCRECT);
// Adjust right edge position to old value
titlerc.right = rect.right + 1;
// Draw a rectangle around the title area.
Rectangle(hDC, titlerc.left, titlerc.top, titlerc.right, titlerc.bottom);
// Draw title text (Information)
DrawText(hDC, tszResourceString, -1, &titlerc, DT_CENTER|DT_NOPREFIX);
SelectObject(hDC, hOldBrush);
DeleteObject(hBrush);
}
SelectObject(hDC, hOldPen);
DeleteObject(hPen);
}
}
void CFlexInfoBox::SetVertSB(BOOL bSet)
{
if (!bSet && !m_bVertSB)
return;
m_bVertSB = bSet;
if (m_hWnd == NULL)
return;
SetVertSB();
}
void CFlexInfoBox::SetVertSB()
{
if (m_bVertSB)
{
SetSBValues();
SIZE client = GetClientSize();
client.cy = m_TextWinRect.bottom - m_TextWinRect.top;
SetWindowPos(m_VertSB.m_hWnd, NULL, client.cx - m_nSBWidth - 1, m_TextRect.top, m_nSBWidth, client.cy - 1, SWP_NOZORDER);
}
ShowWindow(m_VertSB.m_hWnd, m_bVertSB ? SW_SHOW : SW_HIDE);
}
void CFlexInfoBox::SetSBValues()
{
if (m_hWnd == NULL)
return;
m_VertSB.SetValues(0, m_TextRect.bottom - m_TextRect.top, m_TextWinRect.bottom - m_TextWinRect.top, 0);
}
void CFlexInfoBox::OnWheel(POINT point, WPARAM wParam)
{
if (!m_bVertSB) return;
if (m_VertSB.GetMin() == m_VertSB.GetMax()) return;
int nPage = MulDiv(m_VertSB.GetPage(), 9, 10) >> 1; // Half a page at a time
if ((int)wParam >= 0)
m_VertSB.AdjustPos(-nPage);
else
m_VertSB.AdjustPos(nPage);
Invalidate();
}
LRESULT CFlexInfoBox::WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch (msg)
{
case WM_FLEXVSCROLL:
{
int code = (int)wParam;
CFlexScrollBar *pSB = (CFlexScrollBar *)lParam;
if (!pSB)
return 0;
int nLine = 1;
int nPage = MulDiv(pSB->GetPage(), 9, 10);
switch (code)
{
case SB_LINEUP: pSB->AdjustPos(-nLine); break;
case SB_LINEDOWN: pSB->AdjustPos(nLine); break;
case SB_PAGEUP: pSB->AdjustPos(-nPage); break;
case SB_PAGEDOWN: pSB->AdjustPos(nPage); break;
case SB_THUMBTRACK: pSB->SetPos(pSB->GetThumbPos()); break;
case SB_ENDSCROLL:
::ReleaseCapture();
break;
}
Invalidate();
return 0;
}
default:
if (msg == WM_LBUTTONDOWN)
{
HWND hWndParent;
hWndParent = GetParent(hWnd);
SendMessage(hWndParent, WM_UNHIGHLIGHT, 0, 0); // Send click message to page to unhighlight callout
}
return CFlexWnd::WndProc(hWnd, msg, wParam, lParam);
}
return 0;
}