Begin add supporting for multiple screens

CRT.c

@@ -127,6 +127,7 @@ typedef enum ColorElements_ {
    CPU_SOFTIRQ,
    CPU_STEAL,
    CPU_GUEST,
+   PANEL_EDIT,
    LAST_COLORELEMENT
 } ColorElements;
 
@@ -231,6 +232,7 @@ int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
       [CPU_SOFTIRQ] = ColorPair(Magenta,Black),
       [CPU_STEAL] = ColorPair(Cyan,Black),
       [CPU_GUEST] = ColorPair(Cyan,Black),
+      [PANEL_EDIT] = ColorPair(White,Blue),
    },
    [COLORSCHEME_MONOCHROME] = {
       [RESET_COLOR] = A_NORMAL,
@@ -290,6 +292,7 @@ int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
       [CPU_SOFTIRQ] = A_BOLD,
       [CPU_STEAL] = A_REVERSE,
       [CPU_GUEST] = A_REVERSE,
+      [PANEL_EDIT] = A_BOLD,
    },
    [COLORSCHEME_BLACKONWHITE] = {
       [RESET_COLOR] = ColorPair(Black,White),
@@ -349,6 +352,7 @@ int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
       [CPU_SOFTIRQ] = ColorPair(Blue,White),
       [CPU_STEAL] = ColorPair(Cyan,White),
       [CPU_GUEST] = ColorPair(Cyan,White),
+      [PANEL_EDIT] = ColorPair(White,Blue),
    },
    [COLORSCHEME_LIGHTTERMINAL] = {
       [RESET_COLOR] = ColorPair(Black,Black),
@@ -408,6 +412,7 @@ int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
       [CPU_SOFTIRQ] = ColorPair(Blue,Black),
       [CPU_STEAL] = ColorPair(Black,Black),
       [CPU_GUEST] = ColorPair(Black,Black),
+      [PANEL_EDIT] = ColorPair(White,Blue),
    },
    [COLORSCHEME_MIDNIGHT] = {
       [RESET_COLOR] = ColorPair(White,Blue),
@@ -467,6 +472,7 @@ int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
       [CPU_SOFTIRQ] = ColorPair(Black,Blue),
       [CPU_STEAL] = ColorPair(White,Blue),
       [CPU_GUEST] = ColorPair(White,Blue),
+      [PANEL_EDIT] = ColorPair(White,Blue),
    },
    [COLORSCHEME_BLACKNIGHT] = {
       [RESET_COLOR] = ColorPair(Cyan,Black),
@@ -526,6 +532,7 @@ int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
       [CPU_SOFTIRQ] = ColorPair(Blue,Black),
       [CPU_STEAL] = ColorPair(Cyan,Black),
       [CPU_GUEST] = ColorPair(Cyan,Black),
+      [PANEL_EDIT] = ColorPair(White,Cyan),
    },
    [COLORSCHEME_BROKENGRAY] = { 0 } // dynamically generated.
 };

CRT.h

@@ -115,6 +115,7 @@ typedef enum ColorElements_ {
    CPU_SOFTIRQ,
    CPU_STEAL,
    CPU_GUEST,
+   PANEL_EDIT,
    LAST_COLORELEMENT
 } ColorElements;
 

CategoriesPanel.c

@@ -11,6 +11,7 @@ in the source distribution for its full text.
 #include "MetersPanel.h"
 #include "DisplayOptionsPanel.h"
 #include "ColumnsPanel.h"
+#include "ScreensPanel.h"
 #include "ColorsPanel.h"
 #include "AvailableColumnsPanel.h"
 
@@ -64,9 +65,11 @@ static void CategoriesPanel_makeColorsPage(CategoriesPanel* this) {
    ScreenManager_add(this->scr, colors, -1);
 }
 
-static void CategoriesPanel_makeColumnsPage(CategoriesPanel* this) {
+static void CategoriesPanel_makeScreensPage(CategoriesPanel* this) {
+   Panel* screens = (Panel*) ScreensPanel_new(this->settings);
    Panel* columns = (Panel*) ColumnsPanel_new(this->settings);
    Panel* availableColumns = (Panel*) AvailableColumnsPanel_new(columns);
+   ScreenManager_add(this->scr, screens, 20);
    ScreenManager_add(this->scr, columns, 20);
    ScreenManager_add(this->scr, availableColumns, -1);
 }
@@ -118,7 +121,7 @@ static HandlerResult CategoriesPanel_eventHandler(Panel* super, int ch) {
             CategoriesPanel_makeColorsPage(this);
             break;
          case 3:
-            CategoriesPanel_makeColumnsPage(this);
+            CategoriesPanel_makeScreensPage(this);
             break;
       }
    }
@@ -147,6 +150,6 @@ CategoriesPanel* CategoriesPanel_new(ScreenManager* scr, Settings* settings, Hea
    Panel_add(super, (Object*) ListItem_new("Meters", 0));
    Panel_add(super, (Object*) ListItem_new("Display options", 0));
    Panel_add(super, (Object*) ListItem_new("Colors", 0));
-   Panel_add(super, (Object*) ListItem_new("Columns", 0));
+   Panel_add(super, (Object*) ListItem_new("Screens", 0));
    return this;
 }

Makefile.am

@@ -21,7 +21,7 @@ ClockMeter.c ColorsPanel.c ColumnsPanel.c CPUMeter.c CRT.c MainPanel.c \
 DisplayOptionsPanel.c FunctionBar.c Hashtable.c Header.c htop.c ListItem.c \
 LoadAverageMeter.c MemoryMeter.c Meter.c MetersPanel.c Object.c Panel.c \
 BatteryMeter.c Process.c ProcessList.c RichString.c ScreenManager.c Settings.c \
-SignalsPanel.c StringUtils.c SwapMeter.c TasksMeter.c UptimeMeter.c \
+SignalsPanel.c StringUtils.c SwapMeter.c TasksMeter.c UptimeMeter.c ScreensPanel.c \
 TraceScreen.c UsersTable.c Vector.c AvailableColumnsPanel.c AffinityPanel.c \
 HostnameMeter.c OpenFilesScreen.c Affinity.c IncSet.c Action.c EnvScreen.c \
 InfoScreen.c XAlloc.c
@@ -31,7 +31,7 @@ CategoriesPanel.h CheckItem.h ClockMeter.h ColorsPanel.h ColumnsPanel.h \
 CPUMeter.h CRT.h MainPanel.h DisplayOptionsPanel.h FunctionBar.h \
 Hashtable.h Header.h htop.h ListItem.h LoadAverageMeter.h MemoryMeter.h \
 BatteryMeter.h Meter.h MetersPanel.h Object.h Panel.h ProcessList.h RichString.h \
-ScreenManager.h Settings.h SignalsPanel.h StringUtils.h SwapMeter.h \
+ScreenManager.h Settings.h SignalsPanel.h StringUtils.h SwapMeter.h ScreensPanel.h \
 TasksMeter.h UptimeMeter.h TraceScreen.h UsersTable.h Vector.h Process.h \
 AffinityPanel.h HostnameMeter.h OpenFilesScreen.h Affinity.h IncSet.h Action.h \
 EnvScreen.h InfoScreen.h XAlloc.h

ScreensPanel.c

@@ -0,0 +1,254 @@
+/*
+htop - ScreensPanel.c
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPL, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "ScreensPanel.h"
+#include "Platform.h"
+
+#include "StringUtils.h"
+#include "ListItem.h"
+#include "CRT.h"
+
+#include <assert.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+
+/*{
+#include "Panel.h"
+#include "Settings.h"
+
+#ifndef SCREEN_NAME_LEN
+#define SCREEN_NAME_LEN 20
+#endif
+
+typedef struct ScreensPanel_ {
+   Panel super;
+
+   Settings* settings;
+   char buffer[SCREEN_NAME_LEN + 1];
+   char* saved;
+   int cursor;
+   bool moving;
+   bool renaming;
+} ScreensPanel;
+
+}*/
+
+static const char* const ScreensFunctions[] = {"      ", "Rename", "      ", "      ", "      ", "      ", "MoveUp", "MoveDn", "Remove", "Done  ", NULL};
+
+static void ScreensPanel_delete(Object* object) {
+   Panel* super = (Panel*) object;
+   ScreensPanel* this = (ScreensPanel*) object;
+   Panel_done(super);
+   free(this);
+}
+
+static HandlerResult ScreensPanel_eventHandlerRenaming(Panel* super, int ch) {
+   ScreensPanel* const this = (ScreensPanel*) super;
+
+   //ListItem* item = (ListItem*)Panel_getSelected(super);
+   if (ch >= 32 && ch < 127 && ch != 61 && ch != 22) {
+      if (this->cursor < SCREEN_NAME_LEN - 1) {
+         this->buffer[this->cursor] = ch;
+         this->cursor++;
+         super->selectedLen = strlen(this->buffer);
+         Panel_setCursorToSelection(super);
+      }
+   } else {
+      switch(ch) {
+         case 127:
+         case KEY_BACKSPACE:
+         {
+            if (this->cursor > 0) {
+               this->cursor--;
+               this->buffer[this->cursor] = '\0';
+               super->selectedLen = strlen(this->buffer);
+               Panel_setCursorToSelection(super);
+            }
+            break;
+         }
+         case 0x0a:
+         case 0x0d:
+         case KEY_ENTER:
+         {
+            ListItem* item = (ListItem*) Panel_getSelected(super);
+            free(this->saved);
+            item->value = xStrdup(this->buffer);
+            this->renaming = false;
+            super->cursorOn = false;
+            Panel_setSelectionColor(super, CRT_colors[PANEL_SELECTION_FOCUS]);
+            break;
+         }
+         case 27: // Esc
+         {
+            ListItem* item = (ListItem*) Panel_getSelected(super);
+            item->value = this->saved;
+            this->renaming = false;
+            super->cursorOn = false;
+            Panel_setSelectionColor(super, CRT_colors[PANEL_SELECTION_FOCUS]);
+            break;
+         }
+      }
+   }
+   ScreensPanel_update(super);
+   return HANDLED;
+}
+
+void startRenaming(Panel* super) {
+   ScreensPanel* const this = (ScreensPanel*) super;
+
+   ListItem* item = (ListItem*) Panel_getSelected(super);
+   this->renaming = true;
+   super->cursorOn = true;
+   char* name = item->value;
+   this->saved = name;
+   strncpy(this->buffer, name, SCREEN_NAME_LEN);
+   this->buffer[SCREEN_NAME_LEN] = '\0';
+   this->cursor = strlen(this->buffer);
+   item->value = this->buffer;
+   Panel_setSelectionColor(super, CRT_colors[PANEL_EDIT]);
+   super->selectedLen = strlen(this->buffer);
+   Panel_setCursorToSelection(super);
+}
+
+static HandlerResult ScreensPanel_eventHandlerNormal(Panel* super, int ch) {
+   ScreensPanel* const this = (ScreensPanel*) super;
+   
+   int selected = Panel_getSelectedIndex(super);
+   HandlerResult result = IGNORED;
+   switch(ch) {
+      case 0x0a:
+      case 0x0d:
+      case KEY_ENTER:
+      case KEY_MOUSE:
+      case KEY_RECLICK:
+      {
+         this->moving = !(this->moving);
+         Panel_setSelectionColor(super, this->moving ? CRT_colors[PANEL_SELECTION_FOLLOW] : CRT_colors[PANEL_SELECTION_FOCUS]);
+         ((ListItem*)Panel_getSelected(super))->moving = this->moving;
+         result = HANDLED;
+         break;
+      }
+      case KEY_F(2):
+      case 0x12: /* Ctrl+R */
+      {
+         startRenaming(super);
+         result = HANDLED;
+         break;
+      }
+      case KEY_F(5):
+      case 0x0e: /* Ctrl+N */
+      {
+         ListItem* item = ListItem_new("", 0);
+         int idx = Panel_getSelectedIndex(super);
+         Panel_insert(super, idx + 1, (Object*) item);
+         Panel_setSelected(super, idx + 1);
+         startRenaming(super);
+         result = HANDLED;
+         break;
+      }
+      case KEY_UP:
+      {
+         if (!this->moving) {
+            break;
+         }
+         /* else fallthrough */
+      }
+      case KEY_F(7):
+      case '[':
+      case '-':
+      {
+         Panel_moveSelectedUp(super);
+         result = HANDLED;
+         break;
+      }
+      case KEY_DOWN:
+      {
+         if (!this->moving) {
+            break;
+         }
+         /* else fallthrough */
+      }
+      case KEY_F(8):
+      case ']':
+      case '+':
+      {
+         Panel_moveSelectedDown(super);
+         result = HANDLED;
+         break;
+      }
+      case KEY_F(9):
+      //case KEY_DC:
+      {
+         Panel_remove(super, selected);
+         result = HANDLED;
+         break;
+      }
+      default:
+      {
+         if (ch < 255 && isalpha(ch))
+            result = Panel_selectByTyping(super, ch);
+         if (result == BREAK_LOOP)
+            result = IGNORED;
+         break;
+      }
+   }
+   if (result == HANDLED)
+      ScreensPanel_update(super);
+   return result;
+}
+   
+static HandlerResult ScreensPanel_eventHandler(Panel* super, int ch) {
+   ScreensPanel* const this = (ScreensPanel*) super;
+
+   if (this->renaming) {
+      return ScreensPanel_eventHandlerRenaming(super, ch);
+   } else {
+      return ScreensPanel_eventHandlerNormal(super, ch);
+   }
+}
+
+PanelClass ScreensPanel_class = {
+   .super = {
+      .extends = Class(Panel),
+      .delete = ScreensPanel_delete
+   },
+   .eventHandler = ScreensPanel_eventHandler
+};
+
+ScreensPanel* ScreensPanel_new(Settings* settings) {
+   ScreensPanel* this = AllocThis(ScreensPanel);
+   Panel* super = (Panel*) this;
+   FunctionBar* fuBar = FunctionBar_new(ScreensFunctions, NULL, NULL);
+   Panel_init(super, 1, 1, 1, 1, Class(ListItem), true, fuBar);
+
+   this->settings = settings;
+   this->moving = false;
+   this->renaming = false;
+   super->cursorOn = false;
+   this->cursor = 0;
+   Panel_setHeader(super, "Screens");
+
+   char** screens = this->settings->screens;
+   for (; *screens; screens++) {
+      char* name = *screens;
+      Panel_add(super, (Object*) ListItem_new(name, 0));
+   }
+   return this;
+}
+
+void ScreensPanel_update(Panel* super) {
+   ScreensPanel* this = (ScreensPanel*) super;
+   int size = Panel_size(super);
+   this->settings->changed = true;
+   this->settings->screens = xRealloc(this->settings->screens, sizeof(char*) * (size+1));
+   for (int i = 0; i < size; i++) {
+      char* name = ((ListItem*) Panel_get(super, i))->value;
+      this->settings->screens[i] = xStrdup(name);
+   }
+   this->settings->screens[size] = NULL;
+}

ScreensPanel.h

@@ -0,0 +1,39 @@
+/* Do not edit this file. It was automatically generated. */
+
+#ifndef HEADER_ScreensPanel
+#define HEADER_ScreensPanel
+/*
+htop - ScreensPanel.h
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPL, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "Panel.h"
+#include "Settings.h"
+
+#ifndef SCREEN_NAME_LEN
+#define SCREEN_NAME_LEN 20
+#endif
+
+typedef struct ScreensPanel_ {
+   Panel super;
+
+   Settings* settings;
+   char buffer[SCREEN_NAME_LEN + 1];
+   char* saved;
+   int cursor;
+   bool moving;
+   bool renaming;
+} ScreensPanel;
+
+
+void startRenaming(Panel* super);
+
+extern PanelClass ScreensPanel_class;
+
+ScreensPanel* ScreensPanel_new(Settings* settings);
+
+void ScreensPanel_update(Panel* super);
+
+#endif

Settings.c

@@ -34,6 +34,9 @@ typedef struct Settings_ {
    
    MeterColumnSettings columns[2];
 
+   char** screens;
+   int nScreens;
+
    ProcessField* fields;
    int flags;
    int colorScheme;
@@ -68,6 +71,53 @@ typedef struct Settings_ {
 
 }*/
 
+static void writeList(FILE* fd, char** list, int len) {
+   const char* sep = "";
+   for (int i = 0; i < len; i++) {
+      fprintf(fd, "%s%s", sep, list[i]);
+      sep = " ";
+   }
+   fprintf(fd, "\n");
+}
+
+static char** readQuotedList(char* line, int* size) {
+   *size = 0;
+   char** list = xCalloc(sizeof(char*), 1);
+   int start = 0;
+   for (;;) {
+      while (line[start] && line[start] == ' ') {
+         start++;
+      }
+      if (line[start] != '"') {
+         break;
+      }
+      start++;
+      int close = start;
+      while (line[close] && line[close] != '"') {
+         close++;
+      }
+      int len = close - start;
+      char* item = xMalloc(len + 1);
+      strncpy(item, line + start, len);
+      item[len] = '\0';
+      list[*size] = item;
+      (*size)++;
+      list = xRealloc(list, sizeof(char*) * (*size + 1));
+      start = close + 1;
+   }
+   list[*size] = NULL;
+   return list;
+}
+
+static void writeQuotedList(FILE* fd, char** list, int len) {
+   const char* sep = "";
+   for (int i = 0; i < len; i++) {
+      fprintf(fd, "%s\"%s\"", sep, list[i]);
+      sep = " ";
+   }
+   fprintf(fd, "\n");
+}
+
 void Settings_delete(Settings* this) {
    free(this->filename);
    free(this->fields);
@@ -75,6 +125,7 @@ void Settings_delete(Settings* this) {
       String_freeArray(this->columns[i].names);
       free(this->columns[i].modes);
    }
+   String_freeArray(this->screens);
    free(this);
 }
 
@@ -86,6 +137,12 @@ static void Settings_readMeters(Settings* this, char* line, int column) {
    this->columns[column].names = ids;
 }
 
+static void Settings_readScreens(Settings* this, char* line) {
+   char* trim = String_trim(line);
+   this->screens = readQuotedList(trim, &(this->nScreens));
+   free(trim);
+}
+
 static void Settings_readMeterModes(Settings* this, char* line, int column) {
    char* trim = String_trim(line);
    int nIds;
@@ -143,6 +200,13 @@ static void Settings_defaultMeters(Settings* this) {
    this->columns[1].modes[r++] = TEXT_METERMODE;
 }
 
+static void Settings_defaultScreens(Settings* this) {
+   this->screens = xMalloc(sizeof(char*) * 3);
+   this->screens[0] = xStrdup("Overview");
+   this->screens[1] = xStrdup("I/O");
+   this->screens[2] = NULL;
+}
+
 static void readFields(ProcessField* fields, int* flags, const char* line) {
    char* trim = String_trim(line);
    int nIds;
@@ -242,10 +306,15 @@ static bool Settings_read(Settings* this, const char* fileName) {
       } else if (String_eq(option[0], "right_meter_modes")) {
          Settings_readMeterModes(this, option[1], 1);
          readMeters = true;
+      } else if (String_eq(option[0], "screens")) {
+         Settings_readScreens(this, option[1]);
       }
       String_freeArray(option);
    }
    fclose(fd);
+   if (!this->screens) {
+      Settings_defaultScreens(this);
+   }
    if (!readMeters) {
       Settings_defaultMeters(this);
    }
@@ -264,12 +333,7 @@ static void writeFields(FILE* fd, ProcessField* fields, const char* name) {
 }
 
 static void writeMeters(Settings* this, FILE* fd, int column) {
-   const char* sep = "";
+   writeList(fd, this->columns[column].names, this->columns[column].len);
-   for (int i = 0; i < this->columns[column].len; i++) {
-      fprintf(fd, "%s%s", sep, this->columns[column].names[i]);
-      sep = " ";
-   }
-   fprintf(fd, "\n");
 }
 
 static void writeMeterModes(Settings* this, FILE* fd, int column) {
@@ -318,6 +382,9 @@ bool Settings_write(Settings* this) {
    fprintf(fd, "left_meter_modes="); writeMeterModes(this, fd, 0);
    fprintf(fd, "right_meters="); writeMeters(this, fd, 1);
    fprintf(fd, "right_meter_modes="); writeMeterModes(this, fd, 1);
+   if (this->nScreens > 0) {
+      fprintf(fd, "screens="); writeQuotedList(fd, this->screens, this->nScreens);
+   }
    fclose(fd);
    return true;
 }
@@ -407,6 +474,7 @@ Settings* Settings_new(int cpuCount) {
       free(systemSettings);
       if (!ok) {
          Settings_defaultMeters(this);
+         Settings_defaultScreens(this);
          this->hideKernelThreads = true;
          this->highlightMegabytes = true;
          this->highlightThreads = true;

Settings.h

@@ -25,6 +25,9 @@ typedef struct Settings_ {
    
    MeterColumnSettings columns[2];
 
+   char** screens;
+   int nScreens;
+
    ProcessField* fields;
    int flags;
    int colorScheme;