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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "LineEdit.h"
#include "Gui.h"
#include "Rendering/GL/myGL.h"
#include "Rendering/Fonts/glFont.h"
#include "System/Misc/SpringTime.h"
namespace agui
{
LineEdit::LineEdit(GuiElement* parent)
: GuiElement(parent)
, hasFocus(false)
, crypt(false)
, cursorPos(0)
{
}
void LineEdit::SetFocus(bool focus)
{
hasFocus = focus;
}
void LineEdit::SetCrypt(bool focus)
{
crypt = focus;
}
void LineEdit::SetContent(const std::string& line, bool moveCursor)
{
content = line;
if (!moveCursor)
return;
cursorPos = content.size();
}
void LineEdit::DrawSelf()
{
gui->SetDrawMode(Gui::DrawMode::COLOR);
const float opacity = Opacity();
gui->SetColor(1.0f, 1.0f, 1.0f, opacity);
DrawBox();
if (hasFocus) {
gui->SetColor(0.0f, 0.0f, 0.0f, opacity);
DrawOutline();
} else {
gui->SetColor(0.5f, 0.5f, 0.5f, opacity);
DrawOutline();
}
std::string tempText;
if (crypt) {
tempText.resize(content.size(), '*');
} else {
tempText = content;
}
const float textCenter = pos[1] + size[1]/2;
if (hasFocus) {
// draw the caret
const std::string caretStr = tempText.substr(0, cursorPos);
float caretWidth = font->GetSize() * font->GetTextWidth(caretStr) / float(screensize[0]);
char c = tempText[cursorPos];
if (c == 0) { c = ' '; }
float cursorHeight = font->GetSize() * font->GetLineHeight() / float(screensize[1]);
float cw = font->GetSize() * font->GetCharacterWidth(c) /float(screensize[0]);
float csx = pos[0] + 0.01 + caretWidth;
float f = 0.5f * (1.0f + fastmath::sin(spring_now().toMilliSecsf() * 0.015f));
gui->SetColor(f, f, f, opacity);
glRectf(csx, textCenter + cursorHeight/2, csx + cw, textCenter - cursorHeight/2);
gui->SetColor(0.0f, 0.0f, 0.0f, 1.0f); // black
}
gui->SetDrawMode(Gui::DrawMode::FONT);
font->SetTextColor(); //default
font->SetTextDepth(depth);
font->glPrint(pos[0] + 0.01, textCenter, 1.0, FONT_VCENTER | FONT_SCALE | FONT_NORM | FONT_BUFFERED, tempText);
font->DrawBufferedGL4(gui->GetShader());
}
bool LineEdit::HandleEventSelf(const SDL_Event& ev)
{
switch (ev.type) {
case SDL_MOUSEBUTTONDOWN: {
if (MouseOver(ev.button.x, ev.button.y)) {
hasFocus = true;
} else {
hasFocus = false;
}
break;
}
case SDL_TEXTINPUT: {
content.insert(cursorPos, ev.text.text);
cursorPos+=strlen(ev.text.text);
} break;
case SDL_KEYDOWN: {
if (!hasFocus) {
break;
}
switch(ev.key.keysym.sym)
{
case SDLK_BACKSPACE: {
if (cursorPos > 0) {
content.erase(--cursorPos, 1);
}
break;
}
case SDLK_DELETE: {
if (cursorPos < content.size()) {
content.erase(cursorPos, 1);
}
break;
}
case SDLK_ESCAPE: {
hasFocus = false;
break;
}
case SDLK_RIGHT: {
if (cursorPos < content.size()) {
++cursorPos;
}
break;
}
case SDLK_LEFT: {
if (cursorPos > 0) {
--cursorPos;
}
break;
}
case SDLK_HOME: {
cursorPos = 0;
break;
}
case SDLK_END: {
cursorPos = content.size();
break;
}
case SDLK_RETURN: {
DefaultAction.emit();
return true;
}
}
break;
}
}
return false;
}
} // namespace agui
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