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Rename ListBox to Panel, matching dit.
This commit is contained in:
Hisham Muhammad
353
Panel.c
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353
Panel.c
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@ -0,0 +1,353 @@
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/*
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htop - Panel.c
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(C) 2004-2006 Hisham H. Muhammad
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Released under the GNU GPL, see the COPYING file
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in the source distribution for its full text.
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*/
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#include "Object.h"
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#include "Panel.h"
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#include "Vector.h"
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#include "CRT.h"
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#include "RichString.h"
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#include <math.h>
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#include <stdbool.h>
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#include "debug.h"
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#include <assert.h>
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#include <curses.h>
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//#link curses
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/*{
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typedef struct Panel_ Panel;
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typedef enum HandlerResult_ {
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HANDLED,
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IGNORED,
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BREAK_LOOP
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} HandlerResult;
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typedef HandlerResult(*Panel_EventHandler)(Panel*, int);
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struct Panel_ {
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Object super;
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int x, y, w, h;
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WINDOW* window;
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Vector* items;
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int selected;
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int scrollV, scrollH;
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int oldSelected;
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bool needsRedraw;
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RichString header;
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Panel_EventHandler eventHandler;
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};
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extern char* PANEL_CLASS;
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}*/
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#ifndef MIN
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#define MIN(a,b) ((a)<(b)?(a):(b))
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#endif
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#ifndef MAX
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#define MAX(a,b) ((a)>(b)?(a):(b))
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#endif
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/* private property */
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char* PANEL_CLASS = "Panel";
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Panel* Panel_new(int x, int y, int w, int h, char* type, bool owner) {
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Panel* this;
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this = malloc(sizeof(Panel));
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Panel_init(this, x, y, w, h, type, owner);
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return this;
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}
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void Panel_delete(Object* cast) {
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Panel* this = (Panel*)cast;
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Panel_done(this);
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free(this);
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}
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void Panel_init(Panel* this, int x, int y, int w, int h, char* type, bool owner) {
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Object* super = (Object*) this;
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super->class = PANEL_CLASS;
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super->delete = Panel_delete;
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this->x = x;
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this->y = y;
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this->w = w;
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this->h = h;
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this->eventHandler = NULL;
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this->items = Vector_new(type, owner, DEFAULT_SIZE);
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this->scrollV = 0;
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this->scrollH = 0;
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this->selected = 0;
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this->oldSelected = 0;
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this->needsRedraw = true;
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this->header.len = 0;
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}
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void Panel_done(Panel* this) {
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assert (this != NULL);
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RichString_delete(this->header);
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Vector_delete(this->items);
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}
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inline void Panel_setRichHeader(Panel* this, RichString header) {
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assert (this != NULL);
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if (this->header.len > 0) {
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RichString_delete(this->header);
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}
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this->header = header;
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this->needsRedraw = true;
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}
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inline void Panel_setHeader(Panel* this, char* header) {
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Panel_setRichHeader(this, RichString_quickString(CRT_colors[PANEL_HEADER_FOCUS], header));
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}
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void Panel_setEventHandler(Panel* this, Panel_EventHandler eh) {
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this->eventHandler = eh;
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}
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void Panel_move(Panel* this, int x, int y) {
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assert (this != NULL);
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this->x = x;
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this->y = y;
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this->needsRedraw = true;
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}
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void Panel_resize(Panel* this, int w, int h) {
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assert (this != NULL);
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if (this->header.len > 0)
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h--;
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this->w = w;
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this->h = h;
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this->needsRedraw = true;
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}
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void Panel_prune(Panel* this) {
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assert (this != NULL);
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Vector_prune(this->items);
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this->scrollV = 0;
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this->selected = 0;
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this->oldSelected = 0;
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this->needsRedraw = true;
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}
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void Panel_add(Panel* this, Object* o) {
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assert (this != NULL);
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Vector_add(this->items, o);
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this->needsRedraw = true;
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}
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void Panel_insert(Panel* this, int i, Object* o) {
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assert (this != NULL);
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Vector_insert(this->items, i, o);
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this->needsRedraw = true;
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}
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void Panel_set(Panel* this, int i, Object* o) {
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assert (this != NULL);
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Vector_set(this->items, i, o);
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}
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Object* Panel_get(Panel* this, int i) {
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assert (this != NULL);
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return Vector_get(this->items, i);
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}
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Object* Panel_remove(Panel* this, int i) {
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assert (this != NULL);
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this->needsRedraw = true;
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Object* removed = Vector_remove(this->items, i);
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if (this->selected > 0 && this->selected >= Vector_size(this->items))
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this->selected--;
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return removed;
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}
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Object* Panel_getSelected(Panel* this) {
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assert (this != NULL);
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return Vector_get(this->items, this->selected);
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}
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void Panel_moveSelectedUp(Panel* this) {
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assert (this != NULL);
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Vector_moveUp(this->items, this->selected);
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if (this->selected > 0)
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this->selected--;
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}
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void Panel_moveSelectedDown(Panel* this) {
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assert (this != NULL);
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Vector_moveDown(this->items, this->selected);
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if (this->selected + 1 < Vector_size(this->items))
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this->selected++;
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}
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int Panel_getSelectedIndex(Panel* this) {
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assert (this != NULL);
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return this->selected;
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}
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int Panel_getSize(Panel* this) {
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assert (this != NULL);
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return Vector_size(this->items);
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}
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void Panel_setSelected(Panel* this, int selected) {
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assert (this != NULL);
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selected = MAX(0, MIN(Vector_size(this->items) - 1, selected));
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this->selected = selected;
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}
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void Panel_draw(Panel* this, bool focus) {
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assert (this != NULL);
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int first, last;
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int itemCount = Vector_size(this->items);
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int scrollH = this->scrollH;
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int y = this->y; int x = this->x;
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first = this->scrollV;
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if (this->h > itemCount) {
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last = this->scrollV + itemCount;
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move(y + last, x + 0);
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} else {
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last = MIN(itemCount, this->scrollV + this->h);
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}
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if (this->selected < first) {
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first = this->selected;
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this->scrollV = first;
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this->needsRedraw = true;
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}
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if (this->selected >= last) {
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last = MIN(itemCount, this->selected + 1);
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first = MAX(0, last - this->h);
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this->scrollV = first;
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this->needsRedraw = true;
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}
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assert(first >= 0);
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assert(last <= itemCount);
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if (this->header.len > 0) {
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int attr = focus
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? CRT_colors[PANEL_HEADER_FOCUS]
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: CRT_colors[PANEL_HEADER_UNFOCUS];
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attrset(attr);
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mvhline(y, x, ' ', this->w);
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if (scrollH < this->header.len) {
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mvaddchnstr(y, x, this->header.chstr + scrollH,
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MIN(this->header.len - scrollH, this->w));
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}
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attrset(CRT_colors[RESET_COLOR]);
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y++;
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}
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int highlight = focus
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? CRT_colors[PANEL_HIGHLIGHT_FOCUS]
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: CRT_colors[PANEL_HIGHLIGHT_UNFOCUS];
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if (this->needsRedraw) {
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for(int i = first, j = 0; j < this->h && i < last; i++, j++) {
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Object* itemObj = Vector_get(this->items, i);
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RichString itemRef = RichString_new();
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itemObj->display(itemObj, &itemRef);
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int amt = MIN(itemRef.len - scrollH, this->w);
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if (i == this->selected) {
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attrset(highlight);
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RichString_setAttr(&itemRef, highlight);
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mvhline(y + j, x+0, ' ', this->w);
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if (amt > 0)
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mvaddchnstr(y+j, x+0, itemRef.chstr + scrollH, amt);
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attrset(CRT_colors[RESET_COLOR]);
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} else {
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mvhline(y+j, x+0, ' ', this->w);
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if (amt > 0)
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mvaddchnstr(y+j, x+0, itemRef.chstr + scrollH, amt);
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}
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}
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for (int i = y + (last - first); i < y + this->h; i++)
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mvhline(i, x+0, ' ', this->w);
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this->needsRedraw = false;
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} else {
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Object* oldObj = Vector_get(this->items, this->oldSelected);
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RichString oldRef = RichString_new();
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oldObj->display(oldObj, &oldRef);
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Object* newObj = Vector_get(this->items, this->selected);
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RichString newRef = RichString_new();
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newObj->display(newObj, &newRef);
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mvhline(y+ this->oldSelected - this->scrollV, x+0, ' ', this->w);
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if (scrollH < oldRef.len)
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mvaddchnstr(y+ this->oldSelected - this->scrollV, x+0, oldRef.chstr + this->scrollH, MIN(oldRef.len - scrollH, this->w));
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attrset(highlight);
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mvhline(y+this->selected - this->scrollV, x+0, ' ', this->w);
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RichString_setAttr(&newRef, highlight);
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if (scrollH < newRef.len)
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mvaddchnstr(y+this->selected - this->scrollV, x+0, newRef.chstr + this->scrollH, MIN(newRef.len - scrollH, this->w));
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attrset(CRT_colors[RESET_COLOR]);
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}
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this->oldSelected = this->selected;
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move(0, 0);
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}
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void Panel_onKey(Panel* this, int key) {
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assert (this != NULL);
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switch (key) {
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case KEY_DOWN:
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if (this->selected + 1 < Vector_size(this->items))
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this->selected++;
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break;
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case KEY_UP:
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if (this->selected > 0)
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this->selected--;
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break;
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case KEY_LEFT:
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if (this->scrollH > 0) {
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this->scrollH -= 5;
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this->needsRedraw = true;
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}
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break;
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case KEY_RIGHT:
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this->scrollH += 5;
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this->needsRedraw = true;
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break;
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case KEY_PPAGE:
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this->selected -= this->h;
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if (this->selected < 0)
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this->selected = 0;
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break;
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case KEY_NPAGE:
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this->selected += this->h;
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int size = Vector_size(this->items);
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if (this->selected >= size)
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this->selected = size - 1;
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break;
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case KEY_HOME:
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this->selected = 0;
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break;
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case KEY_END:
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this->selected = Vector_size(this->items) - 1;
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break;
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}
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}
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