void textbox::draw_contents()
{
SDL_Rect const &loc = inner_location();
surface surf = video().getSurface();
draw_solid_tinted_rectangle(loc.x,loc.y,loc.w,loc.h,0,0,0,
focus(NULL) ? alpha_focus_ : alpha_, surf);
SDL_Rect src;
if(text_image_ == NULL) {
update_text_cache(true);
}
if(text_image_ != NULL) {
src.y = yscroll_;
src.w = std::min<size_t>(loc.w,text_image_->w);
src.h = std::min<size_t>(loc.h,text_image_->h);
src.x = text_pos_;
SDL_Rect dest = screen_area();
dest.x = loc.x;
dest.y = loc.y;
// Fills the selected area
if(is_selection()) {
const int start = std::min<int>(selstart_,selend_);
const int end = std::max<int>(selstart_,selend_);
int startx = char_x_[start];
int starty = char_y_[start];
const int endx = char_x_[end];
const int endy = char_y_[end];
while(starty <= endy) {
const size_t right = starty == endy ? endx : text_image_->w;
if(right <= size_t(startx)) {
break;
}
SDL_Rect rect = create_rect(loc.x + startx
, loc.y + starty - src.y
, right - startx
, line_height_);
const clip_rect_setter clipper(surf, &loc);
Uint32 color = SDL_MapRGB(surf->format, 0, 0, 160);
fill_rect_alpha(rect, color, 140, surf);
starty += int(line_height_);
startx = 0;
}
}
sdl_blit(text_image_, &src, surf, &dest);
}
draw_cursor((cursor_pos_ == 0 ? 0 : cursor_pos_ - 1), video());
update_rect(loc);
}
void textbox::append_text(const std::string& text, bool auto_scroll, const SDL_Color& color)
{
if(text_image_.get() == NULL) {
set_text(text, color);
return;
}
//disallow adding multi-line text to a single-line text box
if(wrap_ == false && std::find_if(text.begin(),text.end(),utils::isnewline) != text.end()) {
return;
}
const bool is_at_bottom = get_position() == get_max_position();
const wide_string& wtext = utils::string_to_wstring(text);
const surface new_text = add_text_line(wtext, color);
const surface new_surface = create_compatible_surface(text_image_,std::max<size_t>(text_image_->w,new_text->w),text_image_->h+new_text->h);
SDL_SetAlpha(new_text.get(),0,0);
SDL_SetAlpha(text_image_.get(),0,0);
SDL_BlitSurface(text_image_,NULL,new_surface,NULL);
SDL_Rect target = {0,text_image_->h,new_text->w,new_text->h};
SDL_BlitSurface(new_text,NULL,new_surface,&target);
text_image_.assign(new_surface);
text_.resize(text_.size() + wtext.size());
std::copy(wtext.begin(),wtext.end(),text_.end()-wtext.size());
set_dirty(true);
update_text_cache(false);
if(auto_scroll && is_at_bottom) scroll_to_bottom();
handle_text_changed(text_);
}
void textbox::set_inner_location(SDL_Rect const &rect)
{
bg_register(rect);
if (text_image_.null()) return;
text_pos_ = 0;
update_text_cache(false);
}
void textbox::set_wrap(bool val)
{
if(wrap_ != val) {
wrap_ = val;
update_text_cache(true);
set_dirty(true);
}
}
// set_text does not respect max_size_
void textbox::set_text(const std::string& text, const SDL_Color& color)
{
text_ = utils::string_to_wstring(text);
cursor_ = text_.size();
text_pos_ = 0;
selstart_ = -1;
selend_ = -1;
set_dirty(true);
update_text_cache(true, color);
handle_text_changed(text_);
}
void textbox::clear()
{
text_.clear();
cursor_ = 0;
cursor_pos_ = 0;
text_pos_ = 0;
selstart_ = -1;
selend_ = -1;
set_dirty(true);
update_text_cache(true);
handle_text_changed(text_);
}
textbox::textbox(CVideo &video, int width, const std::string& text, bool editable, size_t max_size, double alpha, double alpha_focus, const bool auto_join)
: scrollarea(video, auto_join), max_size_(max_size), text_(utils::string_to_wstring(text)),
cursor_(text_.size()), selstart_(-1), selend_(-1),
grabmouse_(false), text_pos_(0), editable_(editable),
show_cursor_(true), show_cursor_at_(0), text_image_(NULL),
wrap_(false), line_height_(0), yscroll_(0), alpha_(alpha),
alpha_focus_(alpha_focus)
{
// static const SDL_Rect area = d.screen_area();
// const int height = font::draw_text(NULL,area,font_size,font::NORMAL_COLOUR,"ABCD",0,0).h;
set_measurements(width, font::get_max_height(font_size));
set_scroll_rate(font::get_max_height(font_size) / 2);
update_text_cache(true);
}
void textbox::set_cursor_pos(const int cursor_pos)
{
if (!editable_) {
return;
}
if (cursor_pos < 0 || size_t(cursor_pos) > text_.size()) {
WRN_DP << "out-of-boundary selection\n";
return;
}
cursor_ = cursor_pos;
update_text_cache(false);
set_dirty(true);
}
void textbox::handle_event(const SDL_Event& event)
{
scrollarea::handle_event(event);
if(hidden())
return;
bool changed = false;
const int old_selstart = selstart_;
const int old_selend = selend_;
//Sanity check: verify that selection start and end are within text
//boundaries
if(is_selection() && !(size_t(selstart_) <= text_.size() && size_t(selend_) <= text_.size())) {
WRN_DP << "out-of-boundary selection\n";
selstart_ = selend_ = -1;
}
int mousex, mousey;
const Uint8 mousebuttons = SDL_GetMouseState(&mousex,&mousey);
if(!(mousebuttons & SDL_BUTTON(1))) {
grabmouse_ = false;
}
SDL_Rect const &loc = inner_location();
bool clicked_inside = !mouse_locked() && (event.type == SDL_MOUSEBUTTONDOWN
&& (mousebuttons & SDL_BUTTON(1))
&& point_in_rect(mousex, mousey, loc));
if(clicked_inside) {
set_focus(true);
}
if ((grabmouse_ && (!mouse_locked() && event.type == SDL_MOUSEMOTION)) || clicked_inside) {
const int x = mousex - loc.x + text_pos_;
const int y = mousey - loc.y;
int pos = 0;
int distance = x;
for(unsigned int i = 1; i < char_x_.size(); ++i) {
if(static_cast<int>(yscroll_) + y < char_y_[i]) {
break;
}
// Check individually each distance (if, one day, we support
// RTL languages, char_x_[c] may not be monotonous.)
if(abs(x - char_x_[i]) < distance && yscroll_ + y < char_y_[i] + line_height_) {
pos = i;
distance = abs(x - char_x_[i]);
}
}
cursor_ = pos;
if(grabmouse_)
selend_ = cursor_;
update_text_cache(false);
if(!grabmouse_ && mousebuttons & SDL_BUTTON(1)) {
grabmouse_ = true;
selstart_ = selend_ = cursor_;
} else if (! (mousebuttons & SDL_BUTTON(1))) {
grabmouse_ = false;
}
set_dirty();
}
if(editable_ == false) {
return;
}
//if we don't have the focus, then see if we gain the focus,
//otherwise return
if(focus(&event) == false) {
if (!mouse_locked() && event.type == SDL_MOUSEMOTION && point_in_rect(mousex, mousey, loc))
events::focus_handler(this);
return;
}
if(event.type != SDL_KEYDOWN || focus(&event) != true) {
draw();
return;
}
const SDL_keysym& key = reinterpret_cast<const SDL_KeyboardEvent&>(event).keysym;
const SDLMod modifiers = SDL_GetModState();
const int c = key.sym;
const int old_cursor = cursor_;
if(c == SDLK_LEFT && cursor_ > 0)
--cursor_;
if(c == SDLK_RIGHT && cursor_ < static_cast<int>(text_.size()))
++cursor_;
// ctrl-a, ctrl-e and ctrl-u are readline style shortcuts, even on Macs
if(c == SDLK_END || (c == SDLK_e && (modifiers & KMOD_CTRL)))
cursor_ = text_.size();
if(c == SDLK_HOME || (c == SDLK_a && (modifiers & KMOD_CTRL)))
cursor_ = 0;
if((old_cursor != cursor_) && (modifiers & KMOD_SHIFT)) {
if(selstart_ == -1)
selstart_ = old_cursor;
selend_ = cursor_;
}
if(c == SDLK_BACKSPACE) {
changed = true;
if(is_selection()) {
erase_selection();
} else if(cursor_ > 0) {
--cursor_;
text_.erase(text_.begin()+cursor_);
}
}
if(c == SDLK_u && (modifiers & KMOD_CTRL)) { // clear line
changed = true;
cursor_ = 0;
text_.resize(0);
}
if(c == SDLK_DELETE && !text_.empty()) {
changed = true;
if(is_selection()) {
erase_selection();
} else {
if(cursor_ < static_cast<int>(text_.size())) {
text_.erase(text_.begin()+cursor_);
}
}
}
wchar_t character = key.unicode;
//movement characters may have a "Unicode" field on some platforms, so ignore it.
if(!(c == SDLK_UP || c == SDLK_DOWN || c == SDLK_LEFT || c == SDLK_RIGHT ||
c == SDLK_DELETE || c == SDLK_BACKSPACE || c == SDLK_END || c == SDLK_HOME ||
c == SDLK_PAGEUP || c == SDLK_PAGEDOWN)) {
if(character != 0) {
DBG_G << "Char: " << character << ", c = " << c << "\n";
}
if(event.key.keysym.mod & copypaste_modifier) {
switch(c) {
case SDLK_v: // paste
{
changed = true;
if(is_selection())
erase_selection();
std::string str = copy_from_clipboard(false);
//cut off anything after the first newline
str.erase(std::find_if(str.begin(),str.end(),utils::isnewline),str.end());
wide_string s = utils::string_to_wstring(str);
if(text_.size() < max_size_) {
if(s.size() + text_.size() > max_size_) {
s.resize(max_size_ - text_.size());
}
text_.insert(text_.begin()+cursor_, s.begin(), s.end());
cursor_ += s.size();
}
}
break;
case SDLK_c: // copy
{
const size_t beg = std::min<size_t>(size_t(selstart_),size_t(selend_));
const size_t end = std::max<size_t>(size_t(selstart_),size_t(selend_));
wide_string ws = wide_string(text_.begin() + beg, text_.begin() + end);
std::string s = utils::wstring_to_string(ws);
copy_to_clipboard(s, false);
}
break;
}
} else {
if(character >= 32 && character != 127) {
changed = true;
if(is_selection())
erase_selection();
if(text_.size() + 1 <= max_size_) {
text_.insert(text_.begin()+cursor_,character);
++cursor_;
}
}
}
}
if(is_selection() && (selend_ != cursor_))
selstart_ = selend_ = -1;
//since there has been cursor activity, make the cursor appear for
//at least the next 500ms.
show_cursor_ = true;
show_cursor_at_ = SDL_GetTicks();
if(changed || old_cursor != cursor_ || old_selstart != selstart_ || old_selend != selend_) {
text_image_ = NULL;
handle_text_changed(text_);
}
set_dirty(true);
}
void Label::update(Compositor* compositor, float delta_seconds)
{
ScrollablePanel::update(compositor, delta_seconds);
update_text_cache();
}
void Label::append_text(const char* message)
{
text.append(message);
cache_is_dirty = 1;
update_text_cache();
}
void textbox::update_location(SDL_Rect const &rect)
{
scrollarea::update_location(rect);
update_text_cache(true);
set_dirty(true);
}
void textbox::draw_contents()
{
SDL_Rect const &loc = inner_location();
surface surf = video().getSurface();
draw_solid_tinted_rectangle(loc.x,loc.y,loc.w,loc.h,0,0,0,
focus(NULL) ? alpha_focus_ : alpha_, surf);
SDL_Rect src;
if(text_image_ == NULL) {
update_text_cache(true);
}
if(text_image_ != NULL) {
src.y = yscroll_;
src.w = std::min<size_t>(loc.w,text_image_->w);
src.h = std::min<size_t>(loc.h,text_image_->h);
src.x = text_pos_;
SDL_Rect dest = screen_area();
dest.x = loc.x;
dest.y = loc.y;
// Fills the selected area
if(enabled() && is_selection()) {
const int start = std::min<int>(selstart_,selend_);
const int end = std::max<int>(selstart_,selend_);
int startx = char_x_[start];
int starty = char_y_[start];
const int endx = char_x_[end];
const int endy = char_y_[end];
while(starty <= endy) {
const size_t right = starty == endy ? endx : text_image_->w;
if(right <= size_t(startx)) {
break;
}
SDL_Rect rect = create_rect(loc.x + startx
, loc.y + starty - src.y
, right - startx
, line_height_);
const clip_rect_setter clipper(surf, &loc);
Uint32 color = SDL_MapRGB(surf->format, 0, 0, 160);
fill_rect_alpha(rect, color, 140, surf);
starty += int(line_height_);
startx = 0;
}
}
if(enabled()) {
sdl_blit(text_image_, &src, surf, &dest);
} else {
// HACK: using 30% opacity allows white text to look as though it is grayed out,
// while not changing any applicable non-grayscale AA. Actual colored text will
// not look as good, but this is not currently a concern since GUI1 textboxes
// are not used much nowadays, and they will eventually all go away.
sdl_blit(adjust_surface_alpha(text_image_, ftofxp(0.3)), &src, surf, &dest);
}
}
draw_cursor((cursor_pos_ == 0 ? 0 : cursor_pos_ - 1), video());
update_rect(loc);
}