Eclipse-RCP视图无法全屏显示

问题描述

我正在使用RCP 3.x，并尝试在左侧创建一个我想要完整的布局。我尝试了很多组合，但似乎都没有用。这是屏幕截图。

I am using RCP 3.x and trying to create a layout which i want full and on the left hand side. I tried many combinations but none seem to work. Here is the screenshot.

这是我的代码段用于创建此

and here is the code snippet that i used to create this

public MonitorView(final Composite parent)
    {
        super(parent);
        setDisplayName(I18N("Visual Monitoring of iCommand"));
        setLayout(new GridLayout());
        final Composite composite=GUIToolkit.newComposite(parent, SWT.NONE, new GridData(SWT.TOP,SWT.LEFT,false,false,0,0));
        GridLayout layout=new GridLayout();
        composite.setLayout(layout);

        CreatePartControl(parent);

    }

    private void CreatePartControl(Composite parent)
    {
        // TODO Auto-generated method stub
        final Composite c =new Composite(parent,SWT.NONE);
        final Canvas canvas=new Canvas(parent,SWT.NONE);
        Color red = display.getSystemColor(SWT.COLOR_RED);
        canvas.setBackground(red);
        c.addPaintListener(new PaintListener() {
            @Override
            public void paintControl(PaintEvent event)
            {
                int offset_x=130;
                int offset_y=70;
                int j=0,i=0,n=3,x,y;

                DrawRoundedRectangle d= new DrawRoundedRectangle();
                //for loop for column 1.Placing elements column wise.

                for(i=0;i<n;i++)
                { x=0;y=offset_y*j;
                  d.drawrectangle(event, x, y, j);
                  j++;
                  x=0;y=offset_y*j;
                  d.drawrectangle(event, x, y, j);
                  j++;
                }

            j=0;int flag=6;
            //for loop for drawing column 2
                for(i=0;i<n;i++)
                {
                  x=offset_x; y=offset_y*j;
                  d.drawrectangle(event, x, y, flag);
                  j++;flag++;
                  x=offset_x;y=offset_y*j;
                  d.drawrectangle(event, x, y, flag);
                  flag++;
                  j++;
                }
            }
        });

    }

为什么从左开始的视图，以及为什么画布仅从右侧开始是红色的..为什么矩形的背景也不是红色。

以供参考。这是drawRoundedRectangle的代码。

For added reference. here is the code for drawRoundedRectangle.

void drawrectangle(PaintEvent event, int x,int y,int j)
    {
        event.gc.setForeground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
        event.gc.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_DARK_GRAY));
        Font font = new Font(Display.getCurrent(),"Arial",font_size,SWT.BOLD | SWT.ITALIC);
        event.gc.setFont(font);
        event.gc.drawRoundRectangle(initial_pos_x+x,initial_pos_y+y,width_of_rect,height_of_rect,arc_width,arc_height);
        event.gc.fillRoundRectangle(initial_pos_x+adjust_pos_x+x,initial_pos_y+adjust_pos_y+y,width_of_rect+adjust_width_x,height_of_rect+adjust_height_y,arc_width,arc_height);
        event.gc.drawText(Services_name.get(j), text_x+x,text_y+y);
    }

：更改后@ greg449告诉这里结果。 当我进行必要的逻辑更改时，为什么尺寸变小

: After changes @greg449 told here is the result.It does not make sense why the size got smaller when i made the required logical changes

推荐答案

您正在获得Composite的父母

You are getting the parents of your Composite controls wrong so you are ending up with multiple composites side by side.

首先：

   final Composite composite=GUIToolkit.newComposite(parent, SWT.NONE, new GridData(SWT.TOP,SWT.LEFT,false,false,0,0));
    GridLayout layout=new GridLayout();
    composite.setLayout(layout);

    CreatePartControl(parent);

您正在将父级传递给 CreatePartControl ，因此您没有使用复合材料，但是会占用空间。

You are passing parent to CreatePartControl so you are not using composite but it will take up space.

第二个：

private void CreatePartControl(Composite parent)
{
    // TODO Auto-generated method stub
    final Composite c =new Composite(parent,SWT.NONE);
    final Canvas canvas=new Canvas(parent,SWT.NONE);

您创建复合 c ，然后使用父级作为画布的父级，因此 c 和 canvas 并排放置。

You create composite c but then use parent as the parent for the Canvas so c and canvas are side by side.

您还需要画图侦听器在画布上，因为那是您想要的来画画。

You will also need the paint listener to be on the canvas since that is what you want to draw on.

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