It is accomplished ...
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10 a95241bf-73f2-0310-859d-f6bbb57e9c96
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ejakowatz
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/*! \file MainWindow.cpp
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* \brief Code for the MainWindow class.
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*
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* Displays the main window, the essence of the app.
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*
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*/
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#include "MainWindow.h"
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/**
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* Constructor.
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* @param frame The size to make the window.
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* @param physMem The amount of physical memory in the machine.
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* @param currSwp The current swap file size.
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* @param minVal The minimum value of the swap file.
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* @param maxSwapVal The maximum value of the swap file.
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*/
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MainWindow::MainWindow(BRect frame, int physMemVal, int currSwapVal, int minVal, int maxSwapVal, VMSettings *Settings)
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:BWindow(frame, "Virtual Memory", B_TITLED_WINDOW, B_NOT_RESIZABLE | B_ASYNCHRONOUS_CONTROLS | B_NOT_ZOOMABLE){
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BStringView *physMem;
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BStringView *currSwap;
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BButton *defaultButton;
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BBox *topLevelView;
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BBox *boxView;
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fSettings = Settings;
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/**
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* Sets the fill color for the "used" portion of the slider.
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*/
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rgb_color fillColor;
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fillColor.red = 0;
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fillColor.blue = 152;
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fillColor.green = 102;
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/**
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* This var sets the size of the visible box around the string views and
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* the slider.
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*/
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BRect boxRect=Bounds();
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boxRect.left=boxRect.left+10;
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boxRect.top=boxRect.top+10;
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boxRect.bottom=boxRect.bottom-45;
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boxRect.right=boxRect.right-10;
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char labels[50];
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char sliderMinLabel[10];
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char sliderMaxLabel[10];
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origMemSize = currSwapVal;
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minSwapVal = minVal;
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/**
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* Set up the "Physical Memory" label.
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*/
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sprintf(labels, "Physical Memory: %d MB", physMemVal);
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physMem = new BStringView(*(new BRect(10, 10, 210, 20)), "PhysicalMemory", labels, B_FOLLOW_ALL, B_WILL_DRAW);
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/**
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* Set up the "Current Swap File Size" label.
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*/
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sprintf(labels, "Current Swap File Size: %d MB", currSwapVal);
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currSwap = new BStringView(*(new BRect(10, 25, 210, 35)), "CurrentSwapSize", labels, B_FOLLOW_ALL, B_WILL_DRAW);
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/**
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* Set up the "Requested Swap File Size" label.
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*/
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sprintf(labels, "Requested Swap File Size: %d MB", currSwapVal);
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reqSwap = new BStringView(*(new BRect(10, 40, 210, 50)), "RequestedSwapSize", labels, B_FOLLOW_ALL, B_WILL_DRAW);
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/**
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* Set up the slider.
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*/
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sprintf(sliderMinLabel, "%d MB", minSwapVal);
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sprintf(sliderMaxLabel, "%d MB", maxSwapVal);
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reqSizeSlider = new BSlider(*(new BRect(10, 51, 240, 75)), "ReqSwapSizeSlider", "", new BMessage(MEMORY_SLIDER_MSG), minSwapVal, maxSwapVal, B_TRIANGLE_THUMB, B_FOLLOW_LEFT, B_WILL_DRAW);
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reqSizeSlider->SetLimitLabels(sliderMinLabel, sliderMaxLabel);
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reqSizeSlider->UseFillColor(TRUE, &fillColor);
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reqSizeSlider->SetModificationMessage(new BMessage(SLIDER_UPDATE_MSG));
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reqSizeSlider->SetValue(currSwapVal);
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/**
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* Initializes the restart notice view.
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*/
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restart = new BStringView(*(new BRect(40, 100, 210, 110)), "RestartMessage", "", B_FOLLOW_ALL, B_WILL_DRAW);
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/**
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* This view holds the three labels and the slider.
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*/
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boxView = new BBox(boxRect, "BoxView", B_FOLLOW_ALL, B_WILL_DRAW, B_FANCY_BORDER);
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boxView->AddChild(reqSizeSlider);
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boxView->AddChild(physMem);
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boxView->AddChild(currSwap);
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boxView->AddChild(reqSwap);
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boxView->AddChild(restart);
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defaultButton = new BButton(*(new BRect(10, 138, 85, 158)), "DefaultButton", "Default", new BMessage(DEFAULT_BUTTON_MSG), B_FOLLOW_ALL, B_WILL_DRAW);
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revertButton = new BButton(*(new BRect(95, 138, 170, 158)), "RevertButton", "Revert", new BMessage(REVERT_BUTTON_MSG), B_FOLLOW_ALL, B_WILL_DRAW);
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revertButton->SetEnabled(false);
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topLevelView = new BBox(Bounds(), "TopLevelView", B_FOLLOW_ALL, B_WILL_DRAW, B_NO_BORDER);
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topLevelView->AddChild(boxView);
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topLevelView->AddChild(defaultButton);
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topLevelView->AddChild(revertButton);
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AddChild(topLevelView);
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}
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/**
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* Displays the "Changes will take effect on restart" message.
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* @param setTo If true, displays the message If false, un-displays it.
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*/
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void MainWindow::toggleChangedMessage(bool setTo){
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char msg[100];
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if(setTo){
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revertButton->SetEnabled(true);
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sprintf(msg, "Changes will take effect on restart.");
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restart->SetText(msg);
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}//if
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else{
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restart->SetText("");
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}//else
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}//toggleChangedMessage
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/**
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* Handles messages.
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* @param message The message recieved by the window.
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*/
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void MainWindow::MessageReceived(BMessage *message){
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char msg[100];
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switch(message->what){
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int currVal;
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/**
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* Updates the requested swap file size during a drag.
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*/
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case SLIDER_UPDATE_MSG:
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currVal = int(reqSizeSlider->Value());
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sprintf(msg, "Requested Swap File Size: %d MB", currVal);
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reqSwap->SetText(msg);
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if(currVal != origMemSize){
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toggleChangedMessage(true);
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}//if
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else{
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revertButton->SetEnabled(false);
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toggleChangedMessage(false);
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}//else
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break;
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/**
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* Case where the slider was moved.
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* Resets the "Requested Swap File Size" label to the new value.
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*/
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case MEMORY_SLIDER_MSG:
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currVal = int(reqSizeSlider->Value());
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sprintf(msg, "Requested Swap File Size: %d MB", currVal);
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reqSwap->SetText(msg);
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if(currVal != origMemSize){
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toggleChangedMessage(true);
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}//if
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else{
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revertButton->SetEnabled(false);
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toggleChangedMessage(false);
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}//else
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break;
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/**
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* Case where the default button was pressed.
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* Eventually will set the swap file size to the optimum size,
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* as decided by this app (as soon as I can figure out how to
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* do that).
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*/
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case DEFAULT_BUTTON_MSG:
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reqSizeSlider->SetValue(minSwapVal);
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sprintf(msg, "Requested Swap File Size: %d MB", minSwapVal);
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reqSwap->SetText(msg);
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if(minSwapVal != origMemSize){
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toggleChangedMessage(true);
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}//if
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else{
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revertButton->SetEnabled(false);
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toggleChangedMessage(false);
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}//else
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break;
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/**
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* Case where the revert button was pressed.
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* Returns things to the way they were when the app was started,
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* which is not necessarily the default size.
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*/
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case REVERT_BUTTON_MSG:
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revertButton->SetEnabled(false);
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sprintf(msg, "Requested Swap File Size: %d MB", origMemSize);
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reqSwap->SetText(msg);
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reqSizeSlider->SetValue(origMemSize);
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toggleChangedMessage(false);
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break;
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/**
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* Unhandled messages get passed to BWindow.
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*/
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default:
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BWindow::MessageReceived(message);
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}
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}
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/**
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* Quits and Saves.
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* Sets the swap size and turns the virtual memory on by writing to the
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* /boot/home/config/settings/kernel/drivers/virtual_memory file.
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*/
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bool MainWindow::QuitRequested(){
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FILE *settingsFile =
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fopen("/boot/home/config/settings/kernel/drivers/virtual_memory", "w");
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fprintf(settingsFile, "vm on\n");
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fprintf(settingsFile, "swap_size %d\n", (int(reqSizeSlider->Value()) * 1048576));
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fclose(settingsFile);
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be_app->PostMessage(B_QUIT_REQUESTED);
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return(true);
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}
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void MainWindow::FrameMoved(BPoint origin)
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{//MainWindow::FrameMoved
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fSettings->SetWindowPosition(Frame());
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}//MainWindow::FrameMoved
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