source: dev/ProjectEditor/Ruler.cpp@ 103

#include "common.h"

LRESULT CALLBACK RulerProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam){
    switch(message){
        case WM_PAINT:
            CRuler *pobj_Ruler;
            pobj_Ruler=(CRuler *)GetWindowLong(hwnd,GWL_USERDATA);

            HDC hdc;
            PAINTSTRUCT ps;
            hdc=BeginPaint(hwnd,&ps);

            pobj_Ruler->draw(hdc);

            EndPaint(hwnd,&ps);
            break;
    }
    return DefWindowProc(hwnd,message,wParam,lParam);
}

CRuler::CRuler(HWND hParent,int WndNum){
    m_WndNum=WndNum;

    hRulerWnd=CreateWindowEx(0,"Ruler","Ruler",
        WS_CHILD|WS_CLIPCHILDREN|WS_VISIBLE,
        0,0,0,0,
        hParent,0,hInst,0);
    SetWindowLong(hRulerWnd,GWL_USERDATA,(long)this);

    HDC hdc;
    hdc=GetDC(hRulerWnd);

    memdc=CreateCompatibleDC(hdc);
    hMemBmp=CreateCompatibleBitmap(hdc,ScreenX,HEIGHT_RULER);
    SelectObject(memdc,hMemBmp);

    ReleaseDC(hRulerWnd,hdc);
}
CRuler::~CRuler(){
    DeleteDC(memdc);
    DeleteObject(hMemBmp);

    DestroyWindow(hRulerWnd);
}

void CRuler::resize(int x,int y,int cx,int cy){
    MoveWindow(hRulerWnd,x,y,cx,cy,1);
}
void CRuler::draw(HDC hdc){
    int i;

    //スクロールバーによるベースポジションを取得
    int BaseX,BaseY;
    BaseX=0;
    BaseY=0;
    GetScrollBaseCaretPos(m_WndNum,&BaseX,&BaseY);

    int iControlTabSpace;
    iControlTabSpace=MdiInfo[m_WndNum].pMdiTextEdit->iWidth_ControlTabSpace;

    HBRUSH hBrush,hOldBrush;
    hBrush=CreateSolidBrush(RGB(230,230,230));

    HPEN hPen,hOldPen;
    hPen=CreatePen(PS_SOLID,0,RGB(60,60,60));

    //背景色を塗りつぶす
    hOldBrush=(HBRUSH)SelectObject(memdc,hBrush);
    PatBlt(memdc,0,0,ScreenX,HEIGHT_RULER,PATCOPY);
    SelectObject(memdc,hOldBrush);


    extern HFONT hRulerFont;
    HFONT hOldFont;
    hOldFont=(HFONT)SelectObject(memdc,hRulerFont);

    hOldPen=(HPEN)SelectObject(memdc,hPen);

    //ラインを描画
    extern int font_width;
    int x;
    for(x=iControlTabSpace,i=-BaseX;x<ScreenX;x+=font_width,i++){
        if(i%10==0){
            MoveToEx(memdc,x,0,NULL);
            LineTo(memdc,x,HEIGHT_RULER);
        }
        else if(i%5==0){
            MoveToEx(memdc,x,HEIGHT_RULER/2,NULL);
            LineTo(memdc,x,HEIGHT_RULER);
        }
        else{
            MoveToEx(memdc,x,HEIGHT_RULER-3,NULL);
            LineTo(memdc,x,HEIGHT_RULER);
        }
    }

    //桁番号を描画
    char temporary[32];
    SetBkColor(memdc,RGB(230,230,230));
    SetTextColor(memdc,RGB(60,60,60));
    for(x=iControlTabSpace,i=-BaseX;x<ScreenX;x+=font_width,i++){
        if(i%10==0){
            sprintf(temporary,"%d",i);
            TextOut(memdc,x+2,0,temporary,lstrlen(temporary));
        }
    }

    SelectObject(memdc,hOldPen);
    SelectObject(memdc,hOldFont);


    //画面に描画
    BitBlt(hdc,0,0,ScreenX,HEIGHT_RULER,memdc,0,0,SRCCOPY);

    DeleteObject(hBrush);
    DeleteObject(hPen);
}