htop/ScreenManager.c

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/*
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htop - ScreenManager.c
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(C) 2004-2011 Hisham H. Muhammad
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Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/
#include "ScreenManager.h"
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#include "Panel.h"
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#include "Object.h"
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#include <assert.h>
#include <time.h>
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#include <stdlib.h>
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#include <stdbool.h>
/*{
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#include "FunctionBar.h"
#include "Vector.h"
#include "Header.h"
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typedef enum Orientation_ {
VERTICAL,
HORIZONTAL
} Orientation;
typedef struct ScreenManager_ {
int x1;
int y1;
int x2;
int y2;
Orientation orientation;
Vector* panels;
Vector* fuBars;
int panelCount;
const FunctionBar* fuBar;
const Header* header;
time_t lastScan;
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bool owner;
bool allowFocusChange;
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} ScreenManager;
}*/
ScreenManager* ScreenManager_new(int x1, int y1, int x2, int y2, Orientation orientation, const Header* header, bool owner) {
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ScreenManager* this;
this = malloc(sizeof(ScreenManager));
this->x1 = x1;
this->y1 = y1;
this->x2 = x2;
this->y2 = y2;
this->fuBar = NULL;
this->orientation = orientation;
this->panels = Vector_new(Class(Panel), owner, DEFAULT_SIZE);
this->fuBars = Vector_new(Class(FunctionBar), true, DEFAULT_SIZE);
this->panelCount = 0;
this->header = header;
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this->owner = owner;
this->allowFocusChange = true;
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return this;
}
void ScreenManager_delete(ScreenManager* this) {
Vector_delete(this->panels);
Vector_delete(this->fuBars);
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free(this);
}
inline int ScreenManager_size(ScreenManager* this) {
return this->panelCount;
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}
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void ScreenManager_add(ScreenManager* this, Panel* item, FunctionBar* fuBar, int size) {
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if (this->orientation == HORIZONTAL) {
int lastX = 0;
if (this->panelCount > 0) {
Panel* last = (Panel*) Vector_get(this->panels, this->panelCount - 1);
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lastX = last->x + last->w + 1;
}
if (size > 0) {
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Panel_resize(item, size, LINES-this->y1+this->y2);
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} else {
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Panel_resize(item, COLS-this->x1+this->x2-lastX, LINES-this->y1+this->y2);
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}
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Panel_move(item, lastX, this->y1);
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}
// TODO: VERTICAL
Vector_add(this->panels, item);
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if (fuBar)
Vector_add(this->fuBars, fuBar);
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else
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Vector_add(this->fuBars, FunctionBar_new(NULL, NULL, NULL));
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if (!this->fuBar && fuBar) this->fuBar = fuBar;
item->needsRedraw = true;
this->panelCount++;
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}
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Panel* ScreenManager_remove(ScreenManager* this, int idx) {
assert(this->panelCount > idx);
Panel* panel = (Panel*) Vector_remove(this->panels, idx);
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Vector_remove(this->fuBars, idx);
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this->fuBar = NULL;
this->panelCount--;
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return panel;
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}
void ScreenManager_resize(ScreenManager* this, int x1, int y1, int x2, int y2) {
this->x1 = x1;
this->y1 = y1;
this->x2 = x2;
this->y2 = y2;
int panels = this->panelCount;
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int lastX = 0;
for (int i = 0; i < panels - 1; i++) {
Panel* panel = (Panel*) Vector_get(this->panels, i);
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Panel_resize(panel, panel->w, LINES-y1+y2);
Panel_move(panel, lastX, y1);
lastX = panel->x + panel->w + 1;
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}
Panel* panel = (Panel*) Vector_get(this->panels, panels-1);
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Panel_resize(panel, COLS-x1+x2-lastX, LINES-y1+y2);
Panel_move(panel, lastX, y1);
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}
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void ScreenManager_run(ScreenManager* this, Panel** lastFocus, int* lastKey) {
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bool quit = false;
int focus = 0;
Panel* panelFocus = (Panel*) Vector_get(this->panels, focus);
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if (this->fuBar)
FunctionBar_draw(this->fuBar, NULL);
this->lastScan = 0;
int ch = 0;
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while (!quit) {
int panels = this->panelCount;
if (this->header) {
time_t now = time(NULL);
if (now > this->lastScan) {
ProcessList_scan(this->header->pl);
ProcessList_sort(this->header->pl);
this->lastScan = now;
}
Header_draw(this->header);
ProcessList_rebuildPanel(this->header->pl, false, false, false, false, NULL);
}
for (int i = 0; i < panels; i++) {
Panel* panel = (Panel*) Vector_get(this->panels, i);
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Panel_draw(panel, i == focus);
if (i < panels) {
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if (this->orientation == HORIZONTAL) {
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mvvline(panel->y, panel->x+panel->w, ' ', panel->h+1);
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}
}
}
FunctionBar* bar = (FunctionBar*) Vector_get(this->fuBars, focus);
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if (bar)
this->fuBar = bar;
if (this->fuBar)
FunctionBar_draw(this->fuBar, NULL);
ch = getch();
if (ch == KEY_MOUSE) {
MEVENT mevent;
int ok = getmouse(&mevent);
if (ok == OK) {
if (mevent.y == LINES - 1) {
ch = FunctionBar_synthesizeEvent(this->fuBar, mevent.x);
} else {
for (int i = 0; i < this->panelCount; i++) {
Panel* panel = (Panel*) Vector_get(this->panels, i);
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if (mevent.x > panel->x && mevent.x <= panel->x+panel->w &&
mevent.y > panel->y && mevent.y <= panel->y+panel->h) {
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focus = i;
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panelFocus = panel;
Panel_setSelected(panel, mevent.y - panel->y + panel->scrollV - 1);
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break;
}
}
}
}
}
if (Panel_eventHandlerFn(panelFocus)) {
HandlerResult result = Panel_eventHandler(panelFocus, ch);
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if (result == HANDLED) {
continue;
} else if (result == BREAK_LOOP) {
quit = true;
continue;
}
}
switch (ch) {
case ERR:
continue;
case KEY_RESIZE:
{
ScreenManager_resize(this, this->x1, this->y1, this->x2, this->y2);
continue;
}
case KEY_LEFT:
case KEY_CTRLB:
if (!this->allowFocusChange)
break;
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tryLeft:
if (focus > 0)
focus--;
panelFocus = (Panel*) Vector_get(this->panels, focus);
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if (Panel_size(panelFocus) == 0 && focus > 0)
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goto tryLeft;
break;
case KEY_RIGHT:
case KEY_CTRLF:
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case 9:
if (!this->allowFocusChange)
break;
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tryRight:
if (focus < this->panelCount - 1)
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focus++;
panelFocus = (Panel*) Vector_get(this->panels, focus);
if (Panel_size(panelFocus) == 0 && focus < this->panelCount - 1)
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goto tryRight;
break;
case KEY_F(10):
case 'q':
case 27:
quit = true;
continue;
default:
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Panel_onKey(panelFocus, ch);
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break;
}
}
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*lastFocus = panelFocus;
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*lastKey = ch;
}