src/apps/pulse/PulseView.cpp

   1 //****************************************************************************************
   2 //
   3 //      File:           PulseView.cpp
   4 //
   5 //      Written by:     David Ramsey and Daniel Switkin
   6 //
   7 //      Copyright 1999, Be Incorporated
   8 //
   9 //****************************************************************************************
  10
  11 #include "PulseView.h"
  12
  13 #include <stdlib.h>
  14 #include <stdio.h>
  15 #include <string.h>
  16
  17 #include <Alert.h>
  18 #include <Catalog.h>
  19
  20 #include <syscalls.h>
  21
  22 #include "Common.h"
  23 #include "PulseApp.h"
  24
  25 #undef B_TRANSLATION_CONTEXT
  26 #define B_TRANSLATION_CONTEXT "PulseView"
  27
  28
  29 PulseView::PulseView(BRect rect, const char *name) :
  30         BView(rect, name, B_FOLLOW_ALL_SIDES, B_WILL_DRAW | B_PULSE_NEEDED | B_FRAME_EVENTS) {
  31
  32         popupmenu = NULL;
  33         cpu_menu_items = NULL;
  34
  35         // Don't init the menus for the DeskbarPulseView, because this instance
  36         // will only be used to archive the replicant
  37         if (strcmp(name, "DeskbarPulseView") != 0) {
  38                 Init();
  39         }
  40 }
  41
  42 // This version will be used by the instantiated replicant
  43 PulseView::PulseView(BMessage *message) : BView(message) {
  44         SetResizingMode(B_FOLLOW_ALL_SIDES);
  45         SetFlags(B_WILL_DRAW | B_PULSE_NEEDED);
  46
  47         popupmenu = NULL;
  48         cpu_menu_items = NULL;
  49         Init();
  50 }
  51
  52 void PulseView::Init() {
  53         popupmenu = new BPopUpMenu("PopUpMenu", false, false, B_ITEMS_IN_COLUMN);
  54         popupmenu->SetFont(be_plain_font);
  55         mode1 = new BMenuItem("", NULL, 0, 0);
  56         mode2 = new BMenuItem("", NULL, 0, 0);
  57         preferences = new BMenuItem(B_TRANSLATE("Settings" B_UTF8_ELLIPSIS),
  58                 new BMessage(PV_PREFERENCES), 0, 0);
  59         about = new BMenuItem(B_TRANSLATE("About Pulse" B_UTF8_ELLIPSIS),
  60                 new BMessage(PV_ABOUT), 0, 0);
  61
  62         popupmenu->AddItem(mode1);
  63         popupmenu->AddItem(mode2);
  64         popupmenu->AddSeparatorItem();
  65
  66         system_info sys_info;
  67         get_system_info(&sys_info);
  68
  69         // Only add menu items to control CPUs on an SMP machine
  70         if (sys_info.cpu_count >= 2) {
  71                 cpu_menu_items = new BMenuItem *[sys_info.cpu_count];
  72                 char temp[20];
  73                 for (int x = 0; x < sys_info.cpu_count; x++) {
  74                         sprintf(temp, "CPU %d", x + 1);
  75                         BMessage *message = new BMessage(PV_CPU_MENU_ITEM);
  76                         message->AddInt32("which", x);
  77                         cpu_menu_items[x] = new BMenuItem(temp, message, 0, 0);
  78                         popupmenu->AddItem(cpu_menu_items[x]);
  79                 }
  80                 popupmenu->AddSeparatorItem();
  81         }
  82
  83         popupmenu->AddItem(preferences);
  84         popupmenu->AddItem(about);
  85 }
  86
  87 void PulseView::MouseDown(BPoint point) {
  88         BPoint cursor;
  89         uint32 buttons;
  90         MakeFocus(true);
  91         GetMouse(&cursor, &buttons, true);
  92
  93         if (buttons & B_SECONDARY_MOUSE_BUTTON) {
  94                 ConvertToScreen(&point);
  95                 // Use the asynchronous version so we don't interfere with
  96                 // the window responding to Pulse() events
  97                 popupmenu->Go(point, true, false, true);
  98         }
  99 }
 100
 101 void PulseView::Update() {
 102         system_info sys_info;
 103         get_system_info(&sys_info);
 104         bigtime_t now = system_time();
 105
 106         // Calculate work done since last call to Update() for each CPU
 107         for (int x = 0; x < sys_info.cpu_count; x++) {
 108                 double cpu_time = (double)(sys_info.cpu_infos[x].active_time - prev_active[x]) / (now - prev_time);
 109                 prev_active[x] = sys_info.cpu_infos[x].active_time;
 110                 if (cpu_time < 0) cpu_time = 0;
 111                 if (cpu_time > 1) cpu_time = 1;
 112                 cpu_times[x] = cpu_time;
 113
 114                 if (sys_info.cpu_count >= 2) {
 115                         if (!_kern_cpu_enabled(x) && cpu_menu_items[x]->IsMarked())
 116                                 cpu_menu_items[x]->SetMarked(false);
 117                         if (_kern_cpu_enabled(x) && !cpu_menu_items[x]->IsMarked())
 118                                 cpu_menu_items[x]->SetMarked(true);
 119                 }
 120         }
 121         prev_time = now;
 122 }
 123
 124 void PulseView::ChangeCPUState(BMessage *message) {
 125         int which = message->FindInt32("which");
 126
 127         if (!LastEnabledCPU(which)) {
 128                 _kern_set_cpu_enabled(which, (int)!cpu_menu_items[which]->IsMarked());
 129         } else {
 130                 BAlert *alert = new BAlert(B_TRANSLATE("Info"),
 131                         B_TRANSLATE("You can't disable the last active CPU."),
 132                         B_TRANSLATE("OK"));
 133                 alert->SetFlags(alert->Flags() | B_CLOSE_ON_ESCAPE);
 134                 alert->Go(NULL);
 135         }
 136 }
 137
 138 PulseView::~PulseView() {
 139         if (popupmenu != NULL) delete popupmenu;
 140         if (cpu_menu_items != NULL) delete cpu_menu_items;
 141 }
 142