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[TASKMGR] Make performance graph grid scroll (#3581)

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The grids are now rolling along with performance graphs.
This commit is contained in:
Wu Haotian 2021-04-04 04:04:06 +08:00 committed by Stanislav Motylkov
parent a4ab9a1e19
commit 0ed04e3640
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GPG key ID: AFE513258CBA9E92
2 changed files with 72 additions and 25 deletions
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93
base/applications/taskmgr/graphctl.c
View file

@ -1,23 +1,9 @@
/*
* ReactOS Task Manager
*
* graphctl.c
*
* Copyright (C) 2002 Robert Dickenson <robd@reactos.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
* PROJECT: ReactOS Task Manager
* LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
* PURPOSE: Graph plotting controls
* COPYRIGHT: Copyright 2002 Robert Dickenson <robd@reactos.org>
* Copyright 2021 Wu Haotian <rigoligo03@gmail.com>
*/
#include "precomp.h"
@ -76,6 +62,14 @@ static void GraphCtrl_Init(TGraphCtrl* this)
this->m_nHalfShiftPixels = this->m_nShiftPixels / 2; /* protected */
this->m_nPlotShiftPixels = this->m_nShiftPixels + this->m_nHalfShiftPixels; /* protected */
/* Set how big the grid boxes are */
this->m_nGridXPixels = 12;
this->m_nGridYPixels = 12;
/* Task manager should scroll grid with the graph. This variable contains the */
/* amount of pixels the grid paint origin should shift to left */
this->m_nGridOffsetPixels = 0;
/* background, grid and data colors */
/* these are public variables and can be set directly */
this->m_crBackColor = RGB( 0, 0, 0); /* see also SetBackgroundColor */
@ -251,17 +245,19 @@ void GraphCtrl_InvalidateCtrl(TGraphCtrl* this, BOOL bResize)
/* LineTo(m_dcGrid, m_rectPlot.left, m_rectPlot.top); */
/* draw the horizontal axis */
for (i = this->m_rectPlot.top; i < this->m_rectPlot.bottom; i += 12)
for (i = this->m_rectPlot.top; i <= this->m_rectPlot.bottom; i += this->m_nGridYPixels)
{
MoveToEx(this->m_dcGrid, this->m_rectPlot.left, this->m_rectPlot.top + i, NULL);
LineTo(this->m_dcGrid, this->m_rectPlot.right, this->m_rectPlot.top + i);
MoveToEx(this->m_dcGrid, this->m_rectPlot.left, i, NULL);
LineTo(this->m_dcGrid, this->m_rectPlot.right, i);
}
/* draw the vertical axis */
for (i = this->m_rectPlot.left; i < this->m_rectPlot.right; i += 12)
/* In order to keep grid position uniform when resizing, vertical axis should be */
/* drawn from right to left */
for (i = this->m_rectPlot.right - this->m_nGridOffsetPixels; i >= this->m_rectPlot.left; i -= this->m_nGridXPixels)
{
MoveToEx(this->m_dcGrid, this->m_rectPlot.left + i, this->m_rectPlot.bottom, NULL);
LineTo(this->m_dcGrid, this->m_rectPlot.left + i, this->m_rectPlot.top);
MoveToEx(this->m_dcGrid, i, this->m_rectPlot.bottom, NULL);
LineTo(this->m_dcGrid, i, this->m_rectPlot.top);
}
SelectObject(this->m_dcGrid, oldPen);
@ -342,6 +338,7 @@ void GraphCtrl_InvalidateCtrl(TGraphCtrl* this, BOOL bResize)
DeleteObject(this->m_bitmapPlot);
this->m_bitmapPlot = CreateCompatibleBitmap(dc, this->m_nClientWidth, this->m_nClientHeight);
SelectObject(this->m_dcPlot, this->m_bitmapPlot);
GraphCtrl_DrawPoint(this);
}
}
@ -366,6 +363,7 @@ double GraphCtrl_AppendPoint(TGraphCtrl* this,
this->m_dCurrentPosition[1] = dNewPoint1;
this->m_dCurrentPosition[2] = dNewPoint2;
this->m_dCurrentPosition[3] = dNewPoint3;
GraphCtrl_ShiftGrid(this);
GraphCtrl_DrawPoint(this);
/* Invalidate(); */
return dPrevious;
@ -407,6 +405,51 @@ void GraphCtrl_Paint(TGraphCtrl* this, HWND hWnd, HDC dc)
DeleteDC(memDC);
}
void GraphCtrl_ShiftGrid(TGraphCtrl* this)
{
RECT rectCleanUp;
HPEN oldPen, solidPen;
int i;
if (this->m_dcGrid == NULL)
return;
solidPen = CreatePen(PS_SOLID, 0, this->m_crGridColor);
/* Scroll the grid left: BitBlt it to itself */
BitBlt(this->m_dcGrid, this->m_rectPlot.left, this->m_rectPlot.top + 1,
this->m_nPlotWidth, this->m_nPlotHeight,
this->m_dcGrid, this->m_rectPlot.left + this->m_nShiftPixels, this->m_rectPlot.top + 1,
SRCCOPY);
/* Set shift pixels */
this->m_nGridOffsetPixels = (this->m_nGridOffsetPixels + this->m_nShiftPixels) % this->m_nGridXPixels;
/* Construct a rect in which needs update */
rectCleanUp = this->m_rectPlot;
rectCleanUp.left = rectCleanUp.right - this->m_nShiftPixels;
/* Fill the cleanup area with the background */
FillRect(this->m_dcGrid, &rectCleanUp, this->m_brushBack);
/* Draw the plot rectangle */
oldPen = (HPEN)SelectObject(this->m_dcGrid, solidPen);
/* Redraw horizontal axis */
for (i = rectCleanUp.top; i < rectCleanUp.bottom; i += this->m_nGridYPixels)
{
MoveToEx(this->m_dcGrid, rectCleanUp.left, i, NULL);
LineTo(this->m_dcGrid, rectCleanUp.right, i);
}
/* Redraw scrolled vertical axis */
MoveToEx(this->m_dcGrid, rectCleanUp.right - this->m_nGridOffsetPixels, rectCleanUp.top, NULL);
LineTo(this->m_dcGrid, rectCleanUp.right - this->m_nGridOffsetPixels, rectCleanUp.bottom);
SelectObject(this->m_dcGrid, oldPen);
DeleteObject(solidPen);
}
void GraphCtrl_DrawPoint(TGraphCtrl* this)
{
/* this does the work of "scrolling" the plot to the left

4
base/applications/taskmgr/graphctl.h
View file

@ -60,10 +60,13 @@ typedef struct
/* those were protected fields */
int m_nHalfShiftPixels;
int m_nPlotShiftPixels;
int m_nGridOffsetPixels;
int m_nClientHeight;
int m_nClientWidth;
int m_nPlotHeight;
int m_nPlotWidth;
int m_nGridXPixels;
int m_nGridYPixels;
double m_dLowerLimit; /* lower bounds */
double m_dUpperLimit; /* upper bounds */
@ -92,6 +95,7 @@ void GraphCtrl_Create(TGraphCtrl* this, HWND hWnd, HWND hParentWnd,
UINT nID);
void GraphCtrl_Dispose(TGraphCtrl* this);
void GraphCtrl_DrawPoint(TGraphCtrl* this);
void GraphCtrl_ShiftGrid(TGraphCtrl* this);
void GraphCtrl_InvalidateCtrl(TGraphCtrl* this, BOOL bResize);
void GraphCtrl_Paint(TGraphCtrl* this, HWND hWnd, HDC dc);
void GraphCtrl_Reset(TGraphCtrl* this);