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#include "inputwidget.h"
#include "paint.h"
#include "util.h"
#include <the_Foundation/array.h>
#include <SDL_timer.h>
struct Impl_InputWidget {
iWidget widget;
enum iInputMode mode;
size_t maxLen;
iArray text; /* iChar[] */
iArray oldText; /* iChar[] */
size_t cursor;
int font;
iClick click;
};
iDefineObjectConstructionArgs(InputWidget, (size_t maxLen), maxLen)
void init_InputWidget(iInputWidget *d, size_t maxLen) {
iWidget *w = &d->widget;
init_Widget(w);
setFlags_Widget(w, focusable_WidgetFlag | hover_WidgetFlag, iTrue);
init_Array(&d->text, sizeof(iChar));
init_Array(&d->oldText, sizeof(iChar));
d->font = uiInput_FontId;
d->cursor = 0;
setMaxLen_InputWidget(d, maxLen);
if (maxLen == 0) {
/* Caller must arrange the width. */
w->rect.size.y = lineHeight_Text(d->font) + 2 * gap_UI;
setFlags_Widget(w, fixedHeight_WidgetFlag, iTrue);
}
init_Click(&d->click, d, SDL_BUTTON_LEFT);
}
void deinit_InputWidget(iInputWidget *d) {
deinit_Array(&d->oldText);
deinit_Array(&d->text);
}
void setMode_InputWidget(iInputWidget *d, enum iInputMode mode) {
d->mode = mode;
}
const iString *text_InputWidget(const iInputWidget *d) {
return collect_String(newUnicodeN_String(constData_Array(&d->text), size_Array(&d->text)));
}
void setMaxLen_InputWidget(iInputWidget *d, size_t maxLen) {
d->maxLen = maxLen;
d->mode = (maxLen == 0 ? insert_InputMode : overwrite_InputMode);
resize_Array(&d->text, maxLen);
if (maxLen) {
/* Set a fixed size. */
iBlock *content = new_Block(maxLen);
fill_Block(content, 'M');
setSize_Widget(
as_Widget(d),
add_I2(measure_Text(d->font, cstr_Block(content)), init_I2(6 * gap_UI, 2 * gap_UI)));
delete_Block(content);
}
}
void setText_InputWidget(iInputWidget *d, const iString *text) {
clear_Array(&d->text);
iConstForEach(String, i, text) {
pushBack_Array(&d->text, &i.value);
}
}
void setCursor_InputWidget(iInputWidget *d, size_t pos) {
d->cursor = iMin(pos, size_Array(&d->text));
}
void begin_InputWidget(iInputWidget *d) {
iWidget *w = as_Widget(d);
if (flags_Widget(w) & selected_WidgetFlag) {
/* Already active. */
return;
}
setFlags_Widget(w, hidden_WidgetFlag | disabled_WidgetFlag, iFalse);
setCopy_Array(&d->oldText, &d->text);
if (d->mode == overwrite_InputMode) {
d->cursor = 0;
}
else {
d->cursor = iMin(size_Array(&d->text), d->maxLen - 1);
}
SDL_StartTextInput();
setFlags_Widget(w, selected_WidgetFlag, iTrue);
}
void end_InputWidget(iInputWidget *d, iBool accept) {
iWidget *w = as_Widget(d);
if (~flags_Widget(w) & selected_WidgetFlag) {
/* Was not active. */
return;
}
if (!accept) {
setCopy_Array(&d->text, &d->oldText);
}
SDL_StopTextInput();
setFlags_Widget(w, selected_WidgetFlag, iFalse);
const char *id = cstr_String(id_Widget(as_Widget(d)));
if (!*id) id = "_";
postCommand_Widget(w, "input.ended id:%s arg:%d", id, accept ? 1 : 0);
}
static iBool processEvent_InputWidget_(iInputWidget *d, const SDL_Event *ev) {
if (isCommand_Widget(as_Widget(d), ev, "focus.gained")) {
begin_InputWidget(d);
return iTrue;
}
else if (isCommand_Widget(as_Widget(d), ev, "focus.lost")) {
end_InputWidget(d, iTrue);
return iTrue;
}
switch (processEvent_Click(&d->click, ev)) {
case none_ClickResult:
break;
case started_ClickResult:
case drag_ClickResult:
case double_ClickResult:
case aborted_ClickResult:
return iTrue;
case finished_ClickResult:
setFocus_Widget(as_Widget(d));
return iTrue;
}
if (ev->type == SDL_KEYUP) {
return iTrue;
}
const size_t curMax = iMin(size_Array(&d->text), d->maxLen - 1);
if (ev->type == SDL_KEYDOWN && isFocused_Widget(as_Widget(d))) {
const int key = ev->key.keysym.sym;
const int mods = keyMods_Sym(ev->key.keysym.mod);
switch (key) {
case SDLK_RETURN:
case SDLK_KP_ENTER:
setFocus_Widget(NULL);
return iTrue;
case SDLK_ESCAPE:
end_InputWidget(d, iFalse);
setFocus_Widget(NULL);
return iTrue;
case SDLK_BACKSPACE:
if (mods & KMOD_ALT) {
clear_Array(&d->text);
d->cursor = 0;
}
else if (d->cursor > 0) {
remove_Array(&d->text, --d->cursor);
}
return iTrue;
case SDLK_d:
if (mods != KMOD_CTRL) break;
case SDLK_DELETE:
if (d->cursor < size_Array(&d->text)) {
remove_Array(&d->text, d->cursor);
}
return iTrue;
case SDLK_k:
if (mods == KMOD_CTRL) {
removeN_Array(&d->text, d->cursor, size_Array(&d->text) - d->cursor);
return iTrue;
}
break;
case SDLK_HOME:
case SDLK_END:
d->cursor = (key == SDLK_HOME ? 0 : curMax);
return iTrue;
case SDLK_a:
case SDLK_e:
if (mods == KMOD_CTRL) {
d->cursor = (key == 'a' ? 0 : curMax);
return iTrue;
}
break;
case SDLK_LEFT:
if (mods & KMOD_PRIMARY) {
d->cursor = 0;
}
else if (d->cursor > 0) {
d->cursor--;
}
return iTrue;
case SDLK_RIGHT:
if (mods & KMOD_PRIMARY) {
d->cursor = curMax;
}
else if (d->cursor < curMax) {
d->cursor++;
}
return iTrue;
case SDLK_TAB:
/* Allow focus switching. */
return processEvent_Widget(as_Widget(d), ev);
}
if (mods & (KMOD_PRIMARY | KMOD_SECONDARY)) {
return iFalse;
}
return iTrue;
}
else if (ev->type == SDL_TEXTINPUT && isFocused_Widget(as_Widget(d))) {
const iString *uni = collectNewCStr_String(ev->text.text);
const iChar chr = first_String(uni);
if (d->mode == insert_InputMode) {
insert_Array(&d->text, d->cursor, &chr);
d->cursor++;
}
else {
if (d->cursor >= size_Array(&d->text)) {
resize_Array(&d->text, d->cursor + 1);
}
set_Array(&d->text, d->cursor++, &chr);
if (d->maxLen && d->cursor == d->maxLen) {
setFocus_Widget(NULL);
}
}
return iTrue;
}
return processEvent_Widget(as_Widget(d), ev);
}
static void draw_InputWidget_(const iInputWidget *d) {
const uint32_t time = frameTime_Window(get_Window());
const iInt2 padding = init_I2(3 * gap_UI, gap_UI);
iRect bounds = adjusted_Rect(bounds_Widget(constAs_Widget(d)), padding, neg_I2(padding));
const iBool isFocused = isFocused_Widget(constAs_Widget(d));
const iBool isHover = isHover_Widget(constAs_Widget(d)) &&
contains_Widget(constAs_Widget(d), mouseCoord_Window(get_Window()));
iPaint p;
init_Paint(&p);
iString text;
initUnicodeN_String(&text, constData_Array(&d->text), size_Array(&d->text));
fillRect_Paint(&p, bounds, black_ColorId);
drawRect_Paint(&p,
adjusted_Rect(bounds, neg_I2(one_I2()), zero_I2()),
isFocused ? orange_ColorId : isHover ? cyan_ColorId : gray50_ColorId);
setClip_Paint(&p, bounds);
const iInt2 emSize = advance_Text(d->font, "M");
const int textWidth = advance_Text(d->font, cstr_String(&text)).x;
const int cursorX = advanceN_Text(d->font, cstr_String(&text), d->cursor).x;
int xOff = 0;
if (d->maxLen == 0) {
if (textWidth > width_Rect(bounds) - emSize.x) {
xOff = width_Rect(bounds) - emSize.x - textWidth;
}
if (cursorX + xOff < width_Rect(bounds) / 2) {
xOff = width_Rect(bounds) / 2 - cursorX;
}
xOff = iMin(xOff, 0);
}
draw_Text(d->font, addX_I2(topLeft_Rect(bounds), xOff), white_ColorId, cstr_String(&text));
clearClip_Paint(&p);
/* Cursor blinking. */
if (isFocused && (time & 256)) {
const iInt2 prefixSize = advanceN_Text(d->font, cstr_String(&text), d->cursor);
const iInt2 curPos = init_I2(xOff + left_Rect(bounds) + prefixSize.x, top_Rect(bounds));
const iRect curRect = { curPos, addX_I2(emSize, 1) };
iString cur;
if (d->cursor < size_Array(&d->text)) {
initUnicodeN_String(&cur, constAt_Array(&d->text, d->cursor), 1);
}
else {
initCStr_String(&cur, " ");
}
fillRect_Paint(&p, curRect, orange_ColorId);
draw_Text(d->font, curPos, black_ColorId, cstr_String(&cur));
deinit_String(&cur);
}
deinit_String(&text);
}
iBeginDefineSubclass(InputWidget, Widget)
.processEvent = (iAny *) processEvent_InputWidget_,
.draw = (iAny *) draw_InputWidget_,
iEndDefineSubclass(InputWidget)
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