drawing.c

电路仿真程序 Classic Ladder is coded 100％ in C.It can be used for educational purposes or anything you wan

                                x+WidDiv3*2,y+HeiDiv2, x+Width,y+HeiDiv2);
            gdk_draw_text(DrawPixmap, drawing_area->style->font, drawing_area->style->black_gc,
                        x+Width-WidDiv4,y+HeiDiv2-1,"D",1);
            /* output : running */
            gdk_draw_line(DrawPixmap, (Timer->OutputRunning)?DynaGcOn:DynaGcOff,
                                x+WidDiv3*2,y+HeiDiv2+Height, x+Width,y+HeiDiv2+Height);
            gdk_draw_text(DrawPixmap, drawing_area->style->font, drawing_area->style->black_gc,
                        x+Width-WidDiv4,y+HeiDiv2-1+Height,"R",1);
            /* Timer Number */
            sprintf(BufTxt,"T%d",Element.VarNum);
            gdk_draw_text(DrawPixmap, drawing_area->style->font, drawing_area->style->black_gc,
                        x+WidDiv2-Width,y+HeiDiv4-2,BufTxt,strlen(BufTxt));
            /* Current Value */
            if (!EditDatas.ModeEdit)
            {
                sprintf(BufTxt,Timer->DisplayFormat,(float)Timer->Value/(float)Timer->Base);
                gdk_draw_text(DrawPixmap, drawing_area->style->font, drawing_area->style->black_gc,
                            x+WidDiv2-2-Width,y+Height,BufTxt,strlen(BufTxt));
            }
            break;
        case ELE_MONOSTABLE:
            if (DrawForToolBar)
                break;
            Monostable = &MonostableArray[Element.VarNum];
            /* the box */
            gdk_draw_rectangle(DrawPixmap, drawing_area->style->white_gc, TRUE,
                                x+WidDiv3-Width, y+HeiDiv3,
                                Width+1*WidDiv3, Height+1*HeiDiv3);
            gdk_draw_rectangle(DrawPixmap, DynaGcOff, FALSE,
                                x+WidDiv3-Width, y+HeiDiv3,
                                Width+1*WidDiv3, Height+1*HeiDiv3);
            /* input */
            gdk_draw_line(DrawPixmap, (Monostable->Input)?DynaGcOn:DynaGcOff,
                                x-Width,y+HeiDiv2, x-Width+WidDiv3,y+HeiDiv2);
            gdk_draw_text(DrawPixmap, drawing_area->style->font, drawing_area->style->black_gc,
                        x-Width,y+HeiDiv2-1,"I^",2);
            /* output : running */
            gdk_draw_line(DrawPixmap, (Monostable->OutputRunning)?DynaGcOn:DynaGcOff,
                                x+WidDiv3*2,y+HeiDiv2, x+Width,y+HeiDiv2);
            gdk_draw_text(DrawPixmap, drawing_area->style->font, drawing_area->style->black_gc,
                        x+Width-WidDiv4,y+HeiDiv2-1,"R",1);
            /* Monostable Number */
            sprintf(BufTxt,"M%d",Element.VarNum);
            gdk_draw_text(DrawPixmap, drawing_area->style->font, drawing_area->style->black_gc,
                        x+WidDiv2-Width,y+HeiDiv4-2,BufTxt,strlen(BufTxt));
            /* Current Value */
            if (!EditDatas.ModeEdit)
            {
                sprintf(BufTxt,Monostable->DisplayFormat,(float)Monostable->Value/(float)Monostable->Base);
                gdk_draw_text(DrawPixmap, drawing_area->style->font, drawing_area->style->black_gc,
                            x+WidDiv2-2-Width,y+Height,BufTxt,strlen(BufTxt));
            }
            break;
        case ELE_COMPAR:
            if (DrawForToolBar)
                break;
            /* the box */
            gdk_draw_rectangle(DrawPixmap, drawing_area->style->white_gc, TRUE,
                                x+WidDiv3-(Width*2), y+HeiDiv4,
                                Width*2+1*WidDiv3, 2*HeiDiv4);
            gdk_draw_rectangle(DrawPixmap, DynaGcOff, FALSE,
                                x+WidDiv3-(Width*2), y+HeiDiv4,
                                Width*2+1*WidDiv3, 2*HeiDiv4);
            /* input */
            gdk_draw_line(DrawPixmap, TheGc,
                                x-Width*2,y+HeiDiv2, x-Width*2+WidDiv3,y+HeiDiv2);
            /* output */
            gdk_draw_line(DrawPixmap, TheGc,
                                x+WidDiv3*2,y+HeiDiv2, x+Width,y+HeiDiv2);
            gdk_draw_text(DrawPixmap, drawing_area->style->font, drawing_area->style->black_gc,
                        x+WidDiv4-(Width*2)+3,y+HeiDiv4-1,"COMPARE",strlen("COMPARE"));
            /* arithmetic expression */
            if (!EditDatas.ModeEdit)
                strcpy(BufTxt,DisplayArithmExpr(ArithmExpr[Element.VarNum].Expr,(Width*2+1*WidDiv3)/8));
            else
                strcpy(BufTxt,DisplayArithmExpr(EditArithmExpr[Element.VarNum],(Width*2+1*WidDiv3)/8));
            gdk_draw_text(DrawPixmap, drawing_area->style->font, drawing_area->style->black_gc,
                        x+WidDiv3-(Width*2)+2,y+HeiDiv2+4,BufTxt,strlen(BufTxt));
            break;
        case ELE_OUTPUT_OPERATE:
            if (DrawForToolBar)
                break;
            /* the box */
            gdk_draw_rectangle(DrawPixmap, drawing_area->style->white_gc, TRUE,
                                x+WidDiv3-(Width*2), y+HeiDiv4,
                                Width*2+1*WidDiv3, 2*HeiDiv4);
            gdk_draw_rectangle(DrawPixmap, DynaGcOff, FALSE,
                                x+WidDiv3-(Width*2), y+HeiDiv4,
                                Width*2+1*WidDiv3, 2*HeiDiv4);
            /* input */
            gdk_draw_line(DrawPixmap, TheGc,
                                x-Width*2,y+HeiDiv2, x-Width*2+WidDiv3,y+HeiDiv2);
            /* output */
            gdk_draw_line(DrawPixmap, TheGc,
                                x+WidDiv3*2,y+HeiDiv2, x+Width,y+HeiDiv2);
            gdk_draw_text(DrawPixmap, drawing_area->style->font, drawing_area->style->black_gc,
                        x+WidDiv4-(Width*2)+3,y+HeiDiv4-1,"OPERATE",strlen("OPERATE"));
            /* arithmetic expression */
            if (!EditDatas.ModeEdit)
                strcpy(BufTxt,DisplayArithmExpr(ArithmExpr[Element.VarNum].Expr,(Width*2+1*WidDiv3)/8));
            else
                strcpy(BufTxt,DisplayArithmExpr(EditArithmExpr[Element.VarNum],(Width*2+1*WidDiv3)/8));
            gdk_draw_text(DrawPixmap, drawing_area->style->font, drawing_area->style->black_gc,
                        x+WidDiv3-(Width*2)+2,y+HeiDiv2+4,BufTxt,strlen(BufTxt));
            break;    }
    /* Drawing Var */
    if (!DrawForToolBar)
    {
        switch(Element.Type)
        {
            case ELE_INPUT:
            case ELE_INPUT_NOT:
            case ELE_RISING_INPUT:
            case ELE_FALLING_INPUT:
            case ELE_OUTPUT:
            case ELE_OUTPUT_NOT:
            case ELE_OUTPUT_SET:
            case ELE_OUTPUT_RESET:
                strcpy(BufTxt,DisplayInfo(Element.VarType,Element.VarNum));
                gdk_draw_text(DrawPixmap, drawing_area->style->font, drawing_area->style->black_gc,
                                x+WidDiv4,y+HeiDiv4-2,BufTxt,strlen(BufTxt));
                break;
            case ELE_OUTPUT_JUMP:
                gdk_draw_text(DrawPixmap, drawing_area->style->font, drawing_area->style->black_gc,
                                x+1,y+HeiDiv4-2,RungArray[Element.VarNum].Label,
                                strlen(RungArray[Element.VarNum].Label));
                break;
        }
    }
    /* Drawing cnx with top */
    if (Element.ConnectedWithTop)
    {
        if (Element.DynamicInput)
            gdk_draw_line(DrawPixmap, DynaGcOn,
                x,y+HeiDiv2, x,y-HeiDiv2);
        else
            gdk_draw_line(DrawPixmap, drawing_area->style->black_gc,
                x,y+HeiDiv2, x,y-HeiDiv2);
    }

    /* specials used for Editor */
    if (DrawForToolBar)
    {
        switch(Element.Type)
        {
            case EDIT_POINTER:
                gdk_draw_line(DrawPixmap, drawing_area->style->black_gc,
                    x+WidDiv4,y+HeiDiv4, x+Width-WidDiv4,y+Height-HeiDiv4); /* \ */
                gdk_draw_line(DrawPixmap, drawing_area->style->black_gc,
                    x+WidDiv4,y+HeiDiv4, x+WidDiv3,y+HeiDiv2);  /* | */
                gdk_draw_line(DrawPixmap, drawing_area->style->black_gc,
                    x+WidDiv4,y+HeiDiv4, x+WidDiv2,y+HeiDiv3);  /* _ */
                gdk_draw_line(DrawPixmap, drawing_area->style->black_gc,
                    x+WidDiv3,y+HeiDiv2, x+WidDiv2,y+HeiDiv3);
                break;
            case EDIT_CNX_WITH_TOP:
                gdk_draw_line(DrawPixmap, drawing_area->style->black_gc,
                    x+WidDiv2,y+HeiDiv4, x+WidDiv2,y+Height-HeiDiv4);
                break;
            case EDIT_LONG_CONNECTION:
                gdk_draw_line(DrawPixmap, TheGc,
                                x,y+HeiDiv2, x+Width-1,y+HeiDiv2);
                gdk_draw_line(DrawPixmap, TheGc,
                                x+3*WidDiv4-1,y+HeiDiv4, x+Width-1,y+HeiDiv2);
                gdk_draw_line(DrawPixmap, TheGc,
                                x+3*WidDiv4-1,y+3*HeiDiv4, x+Width-1,y+HeiDiv2);
                gdk_draw_line(DrawPixmap, TheGc,
                                x+3*WidDiv4-1,y+HeiDiv4, x+3*WidDiv4 +3,y+HeiDiv2);
                gdk_draw_line(DrawPixmap, TheGc,
                                x+3*WidDiv4 +3,y+HeiDiv2, x+3*WidDiv4-1,y+3*HeiDiv4);
                break;
            /* little display used for the toolbar */
            case ELE_TIMER:
                gdk_draw_rectangle(DrawPixmap, drawing_area->style->black_gc, FALSE,
                                    x+WidDiv4, y+HeiDiv4,
                                    Width-2*WidDiv4, Height-2*HeiDiv4);
                gdk_draw_text(DrawPixmap, drawing_area->style->font, TheGc,
                            x+WidDiv3+2,y+HeiDiv3*2,"T",1);
                break;
            case ELE_MONOSTABLE:
                gdk_draw_rectangle(DrawPixmap, drawing_area->style->black_gc, FALSE,
                                    x+WidDiv4, y+HeiDiv4,
                                    Width-2*WidDiv4, Height-2*HeiDiv4);
                gdk_draw_text(DrawPixmap, drawing_area->style->font, TheGc,
                            x+WidDiv3+2,y+HeiDiv3*2,"M",1);
                break;
            case ELE_COMPAR:
                gdk_draw_rectangle(DrawPixmap, drawing_area->style->black_gc, FALSE,
                                    x+WidDiv4, y+HeiDiv4,
                                    Width-2*WidDiv4, Height-2*HeiDiv4);
                gdk_draw_text(DrawPixmap, drawing_area->style->font, TheGc,
                            x+WidDiv3+2,y+HeiDiv3*2,">",1);
                break;
            case ELE_OUTPUT_OPERATE:
                gdk_draw_rectangle(DrawPixmap, drawing_area->style->black_gc, FALSE,
                                    x+WidDiv4, y+HeiDiv4,
                                    Width-2*WidDiv4, Height-2*HeiDiv4);
                gdk_draw_text(DrawPixmap, drawing_area->style->font, TheGc,
                            x+WidDiv3+2,y+HeiDiv3*2,"=",1);
                break;
        }
    }
    if (!EditDatas.ModeEdit)
        gdk_gc_unref(DynaGcOn);
}

void DrawBars()
{
    gdk_draw_rectangle(pixmap, drawing_area->style->black_gc, TRUE,
                                1, 1,
                                3, BlockHeight*RUNG_HEIGHT);
    gdk_draw_rectangle(pixmap, drawing_area->style->black_gc, TRUE,
                                BlockWidth*RUNG_WIDTH+OFFSET_X, 1,
                                3, BlockHeight*RUNG_HEIGHT);
}

void DrawGrid()
{
    int x,y;
    GdkColor DynaGdkColor;
    GdkGC * DynaGcOn;
    DynaGdkColor.pixel = 0xF4F4F4;
    DynaGdkColor.red = 0xF4;
    DynaGdkColor.green = 0xF4;
    DynaGdkColor.blue = 0xF4;

    DynaGcOn = gdk_gc_new(pixmap);
    gdk_gc_set_foreground(DynaGcOn,&DynaGdkColor);
    for(x=BlockWidth; x<RUNG_WIDTH*BlockWidth; x=x+BlockWidth)
    {
        gdk_draw_line(pixmap, DynaGcOn,
                x+OFFSET_X, OFFSET_Y, x+OFFSET_X, RUNG_HEIGHT*BlockHeight+OFFSET_Y);
    }
    for(y=BlockHeight; y<RUNG_HEIGHT*BlockHeight; y=y+BlockHeight)
    {
        gdk_draw_line(pixmap, DynaGcOn,
                OFFSET_X, y+OFFSET_Y, RUNG_WIDTH*BlockWidth+OFFSET_X, y+OFFSET_Y);
    }
    gdk_gc_unref(DynaGcOn);
}

void DrawRung(StrRung * Rung,char CleanBefore)
{
    int x,y;
    GdkRectangle update_rect;

    BlockWidth = BlockHeight = (GTK_WIDGET(drawing_area)->allocation.width - OFFSET_X -5) / RUNG_WIDTH;
    #ifndef THICK_LINE_ELE_ACTIVATED
    if (CleanBefore)
    #endif
    {
            gdk_draw_rectangle(pixmap, drawing_area->style->white_gc, TRUE,
                                0, 0, BlockWidth*RUNG_WIDTH+50, BlockHeight*RUNG_HEIGHT+50);
    }
    /* grid for edit mode */
    if (EditDatas.ModeEdit)
        DrawGrid();
    DrawBars();
    for (y=0;y<RUNG_HEIGHT;y++)
    {
        for(x=0;x<RUNG_WIDTH;x++)
        {
            DrawElement(pixmap,x*BlockWidth+OFFSET_X,y*BlockHeight+OFFSET_Y,BlockWidth,BlockHeight,Rung->Element[x][y],FALSE);
        }
    }
    update_rect.x = 0;
    update_rect.y = 0;
    update_rect.width = GTK_WIDGET(drawing_area)->allocation.width;
    update_rect.height = GTK_WIDGET(drawing_area)->allocation.height;
    gtk_widget_draw (drawing_area, &update_rect);
}