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#include <stdlib.h>
#include <string.h>
#include "eve.h"
#include "eve_kbd.h"
#include "eve_font.h"
#include "window.h"
#include "page.h"
#include "form.h"
#define MIN(X, Y) (((X) < (Y)) ? (X) : (Y))
#define MAX(X, Y) (((X) > (Y)) ? (X) : (Y))
static void widgets_destroy(EVEWidget *widgets, uint16_t widget_size) {
EVEWidget *widget = widgets;
int i;
for (i=0; i<widget_size; i++) {
if (widget->label) eve_free(widget->label);
eve_widget_destroy(widget);
widget = eve_widget_next(widget);
}
eve_free(widgets);
}
int eve_form_create(EVEPage *page, EVEWindow *window, EVEVStack *stack, EVEFormSpec spec[], uint16_t spec_size, eve_page_uievt_t uievt, eve_page_destructor_t destructor) {
EVEWidget *widgets;
EVEWidget *widget;
EVELabel *label;
int w_size = 0;
int i, rv;
if (uievt == NULL) uievt = eve_form_uievt;
if (destructor == NULL) destructor = eve_form_destroy;
for (i=0; i<spec_size; i++) {
w_size += eve_widget_size(spec[i].widget.type);
}
widgets = eve_malloc(w_size);
if (widgets == NULL) {
return EVE_ERR_NOMEM;
}
eve_form_init(page, window, stack, NULL, 0, uievt, destructor);
widget = widgets;
for (i=0; i<spec_size; i++) {
rv = eve_widget_create(widget, &spec[i].widget, page);
if (rv) {
widgets_destroy(widgets, i);
return rv;
}
if (spec[i].label.title) {
rv = EVE_OK;
label = eve_malloc(sizeof(EVELabel));
if (label) rv = eve_label_create(label, &spec[i].label, page);
if ((label == NULL) || rv) {
if (label) eve_free(label);
eve_widget_destroy(widget);
widgets_destroy(widgets, i);
return label ? rv : EVE_ERR_NOMEM;
}
eve_widget_set_label(widget, label);
}
if ((widget->g.w == 0) && widget->label) widget->g.w = window->g.w - widget->label->g.w;
if (widget->g.w == 0) widget->g.w = window->g.w;
widget = eve_widget_next(widget);
}
eve_form_set_widget(page, widgets, spec_size);
return EVE_OK;
}
void eve_form_init(EVEPage *page, EVEWindow *window, EVEVStack *stack, EVEWidget *widget, uint16_t widget_size, eve_page_uievt_t uievt, eve_page_destructor_t destructor) {
eve_page_init(page, window, stack, widget, widget_size, EVE_PAGE_OPT_SCROLL_Y | EVE_PAGE_OPT_SCROLL_BACK | EVE_PAGE_OPT_TRACK_EXT_Y, eve_page_draw, eve_page_touch, uievt, destructor);
if (widget) eve_form_update_g(page, NULL);
}
void eve_form_set_widget(EVEPage *page, EVEWidget *widget, uint16_t widget_size) {
eve_page_set_widget(page, widget, widget_size);
eve_form_update_g(page, NULL);
}
void eve_form_destroy(EVEPage *page) {
widgets_destroy(page->widget, page->widget_size);
}
void eve_form_uievt(EVEPage *page, uint16_t evt, void *param) {
switch (evt) {
case EVE_UIEVT_WIDGET_UPDATE_G:
eve_form_update_g(page, (EVEWidget *)param);
break;
case EVE_UIEVT_GEST_TRACK_STOP: {
EVEUIEvtTouch *touch_p = (EVEUIEvtTouch *)param;
if (touch_p->touch->eevt & EVE_TOUCH_EETYPE_TRACK_RIGHT) {
eve_page_close(page);
return;
}
break;
}
}
}
void eve_form_update_g(EVEPage *page, EVEWidget *_widget) {
EVEWidget *widget = page->widget;
EVEWidget *lastw = NULL;
int i;
uint16_t w = 0;
uint16_t h = 0;
uint16_t l_h = 0;
for (i=0; i<page->widget_size; i++) {
if (widget->flags & EVE_WIDGET_FLAG_HIDDEN) goto update_g_nextw;
if (widget->label) {
h += l_h;
w = widget->label->g.w;
l_h = widget->label->g.h;
widget->label->g.x = 0;
widget->label->g.y = h;
}
if (w + widget->g.w > page->v.window->g.w) {
h += l_h;
w = 0;
l_h = 0;
}
widget->g.x = w;
widget->g.y = h;
w += widget->g.w;
l_h = MAX(l_h, widget->g.h);
lastw = widget;
update_g_nextw:
widget = eve_widget_next(widget);
}
page->g.w = page->v.window->g.w;
page->g.h = h + l_h;
if (lastw && eve_page_oob(page, NULL, NULL)) {
eve_page_show_rect(page, &lastw->g);
}
}
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