/**
* Show credits with list of contributors.
*
* Names of people are shown scrolling up like in movie-credits.\n
* Uses map from wesnoth or campaign as background.
*/
void show_about(CVideo &video, const std::string &campaign)
{
boost::scoped_ptr<cursor::setter> cur(new cursor::setter(cursor::WAIT));
surface& screen = video.getSurface();
if (screen == nullptr) return;
// If the title is multi-line, we need to split it accordingly or we
// get slight scrolling glitches in the credits screen.
std::vector<std::string> text = about::get_text(campaign, true);
SDL_Rect screen_rect = sdl::create_rect(0, 0, screen->w, screen->h);
const surface_restorer restorer(&video, screen_rect);
cur.reset();
std::vector<std::string> image_list;
if(campaign.size() && !images[campaign].empty()){
image_list = utils::parenthetical_split(images[campaign], ',');
} else{
image_list = utils::parenthetical_split(images_default, ',');
}
surface map_image, map_image_scaled;
if(!image_list.empty()) {
map_image = image::get_image(image_list[0]);
} else {
image_list.push_back("");
}
if(!map_image){
image_list[0]=game_config::images::game_title_background;
map_image=image::get_image(image_list[0]);
}
gui::button close(video,_("Close"));
close.set_location((screen->w/2)-(close.width()/2), screen->h - 30);
const int def_size = font::SIZE_XLARGE;
const SDL_Color def_color = font::NORMAL_COLOR;
//substitute in the correct control characters for '+' and '-'
std::string before_header(2, ' ');
before_header[0] = font::LARGE_TEXT;
for(unsigned i = 0; i < text.size(); ++i) {
std::string &s = text[i];
if (s.empty()) continue;
char &first = s[0];
if (first == '-')
first = font::SMALL_TEXT;
else if (first == '+') {
first = font::LARGE_TEXT;
text.insert(text.begin() + i, before_header);
++i;
}
}
text.insert(text.begin(), 10, before_header);
int startline = 0;
//TODO: use values proportional to screen ?
// distance from top of map image to top of scrolling text
const int top_margin = 60;
// distance from bottom of scrolling text to bottom of map image
const int bottom_margin = 40;
// distance from left of scrolling text to the frame border
const int text_left_padding = screen->w/32;
int offset = 0;
bool is_new_line = true;
int first_line_height = 0;
SDL_Rect frame_area;
// we use a dialog to contains the text. Strange idea but at least the style
// will be consistent with the titlescreen
gui::dialog_frame f(video, "", gui::dialog_frame::titlescreen_style, false);
// the text area's dimensions
SDL_Rect text_rect = { 0, 0, 0, 0 };
// we'll retain a copy to prevent SDL_blit to change its w and h
SDL_Rect text_rect_blit;
surface text_surf;
CKey key;
bool last_escape;
int image_count = 0;
int scroll_speed = 4; // scroll_speed*50 = speed of scroll in pixel per second
// Initially redraw all
bool redraw_mapimage = true;
bool update_dimensions = true;
int max_text_width = 0;
do {
last_escape = key[SDLK_ESCAPE] != 0;
// check to see if background image has changed
if(text.size() && (image_count <
((startline * static_cast<int>(image_list.size())) /
static_cast<int>(text.size())))){
image_count++;
surface temp=image::get_image(image_list[image_count]);
map_image=temp?temp:map_image;
redraw_mapimage = true;
}
if (update_dimensions) {
// rescale the background
map_image_scaled = scale_surface(map_image, screen->w, screen->h);
screen_rect = sdl::create_rect(0, 0, screen->w, screen->h);
redraw_mapimage = true;
// update the frame
frame_area = sdl::create_rect(
screen->w * 3 / 32
, top_margin
, screen->w * 13 / 16
, screen->h - top_margin - bottom_margin);
text_rect = f.layout(frame_area).interior;
// update the text area
text_rect.x += text_left_padding;
text_rect.w -= text_left_padding;
text_rect_blit = text_rect;
text_surf = create_compatible_surface(screen, text_rect.w, text_rect.h);
SDL_SetAlpha(text_surf, SDL_RLEACCEL, SDL_ALPHA_OPAQUE);
// relocate the close button
close.set_location((screen->w/2)-(close.width()/2), screen->h - 30);
update_dimensions = false;
}
if (redraw_mapimage) {
// draw map to screen, thus erasing all text
sdl_blit(map_image_scaled, nullptr, screen, nullptr);
update_rect(screen_rect);
// redraw the dialog
f.draw_background();
f.draw_border();
// cache the dialog background (alpha blending + blurred map)
sdl_blit(screen, &text_rect, text_surf, nullptr);
redraw_mapimage = false;
} else {
// redraw the saved part of the dialog where text scrolled
// thus erasing all text
SDL_Rect modified = sdl::create_rect(0, 0, max_text_width, text_rect.h);
sdl_blit(text_surf, &modified, screen, &text_rect_blit);
update_rect(text_rect);
}
int y = text_rect.y - offset;
int line = startline;
max_text_width = 0;
{
// clip to keep text into the frame (thus the new code block)
clip_rect_setter set_clip_rect(screen, &text_rect);
const int line_spacing = 5;
do {
// draw the text (with ellipsis if needed)
// update the max_text_width for future cleaning
int w = font::draw_text(&video, text_rect, def_size, def_color,
text[line], text_rect.x, y).w;
max_text_width = std::max<int>(max_text_width, w);
// since the real drawing on screen is clipped,
// we do a dummy one to get the height of the not clipped line.
// (each time because special format characters may change it)
const int line_height = font::draw_text(nullptr, text_rect, def_size, def_color,
text[line], 0,0).h;
if(is_new_line) {
is_new_line = false;
first_line_height = line_height + line_spacing;
}
line++;
if(size_t(line) > text.size()-1)
line = 0;
y += line_height + line_spacing;
} while(y < text_rect.y + text_rect.h);
}
// performs the actual scrolling
offset += scroll_speed;
if (offset>=first_line_height) {
offset -= first_line_height;
is_new_line = true;
startline++;
if(size_t(startline) == text.size()){
startline = 0;
image_count = -1;
}
}
// handle events
if (key[SDLK_UP] && scroll_speed < 20) {
++scroll_speed;
}
if (key[SDLK_DOWN] && scroll_speed > 0) {
--scroll_speed;
}
if (screen->w != screen_rect.w || screen->h != screen_rect.h) {
update_dimensions = true;
}
events::pump();
events::raise_process_event();
events::raise_draw_event();
// flip screen and wait, so the text does not scroll too fast
video.flip();
CVideo::delay(20);
} while(!close.pressed() && (last_escape || !key[SDLK_ESCAPE]));
}
/**
* Show credits with list of contributors.
*
* Names of people are shown scrolling up like in movie-credits.\n
* Uses map from wesnoth or campaign as background.
*/
void show_about(display &disp, std::string campaign)
{
cursor::set(cursor::WAIT);
CVideo &video = disp.video();
// surface screen = video.getSurface();
// if (screen == NULL) return;
std::vector<std::string> text = about::get_text(campaign);
// SDL_Rect screen_rect = {0, 0, video.getx(), video.gety()};
// const surface_restorer restorer(&video, screen_rect);
cursor::set(cursor::NORMAL);
std::vector<shared_string> image_list;
if(campaign.size() && !images[campaign].empty()){
image_list=utils::split_shared(images[campaign]);
}else{
image_list=utils::split_shared(images_default,',',utils::STRIP_SPACES);
}
surface map_image(scale_surface(image::get_image(image_list[0]), video.getx(), video.gety()));
if(! map_image){
image_list[0]=game_config::game_title;
map_image=surface(scale_surface(image::get_image(image_list[0]), video.getx(), video.gety()));
}
gui::button close(video,_("Close"));
close.set_location((video.getx()/2)-(close.width()/2), video.gety() - 30);
close.set_volatile(true);
const int def_size = font::SIZE_XLARGE;
const SDL_Color def_color = font::NORMAL_COLOUR;
//substitute in the correct control characters for '+' and '-'
std::string before_header(2, ' ');
before_header[0] = font::LARGE_TEXT;
for(unsigned i = 0; i < text.size(); ++i) {
std::string &s = text[i];
if (s.empty()) continue;
char &first = s[0];
if (first == '-')
first = font::SMALL_TEXT;
else if (first == '+') {
first = font::LARGE_TEXT;
text.insert(text.begin() + i, before_header);
++i;
}
}
text.insert(text.begin(), 10, before_header);
int startline = 0;
//TODO: use values proportionnal to screen ?
// distance from top of map image to top of scrolling text
const int top_margin = 60;
// distance from bottom of scrolling text to bottom of map image
const int bottom_margin = 40;
// distance from left of scrolling text to the frame border
const int text_left_padding = video.getx()/32;
int offset = 0;
bool is_new_line = true;
int first_line_height = 0;
SDL_Rect frame_area = {
video.getx() * 3/32,
top_margin,
video.getx() * 13 / 16,
video.gety() - top_margin - bottom_margin
};
// we use a dialog to contains the text. Strange idea but at least the style
// will be consistent with the titlescreen
gui::dialog_frame f(video, "", gui::dialog_frame::titlescreen_style, false);
// set the layout and get the interior rectangle
SDL_Rect text_rect = f.layout(frame_area).interior;
text_rect.x += text_left_padding;
text_rect.w -= text_left_padding;
// make a copy to prevent SDL_blit to change its w and h
SDL_Rect text_rect_blit = text_rect;
CKey key;
bool last_escape;
surface text_surf = create_neutral_surface(text_rect.w, text_rect.h); //create_compatible_surface(screen, text_rect.w, text_rect.h);
SDL_SetAlpha(text_surf, SDL_RLEACCEL, SDL_ALPHA_OPAQUE);
int image_count = 0;
int scroll_speed = 4; // scroll_speed*50 = speed of scroll in pixel per second
// initialy redraw all
bool redraw_mapimage = true;
int max_text_width = text_rect.w;
do {
last_escape = key[SDLK_ESCAPE] != 0;
// check to see if background image has changed
if(text.size() && (image_count <
((startline * static_cast<int>(image_list.size())) /
static_cast<int>(text.size())))){
image_count++;
surface temp=surface(scale_surface(image::get_image(image_list[image_count]), video.getx(), video.gety()));
map_image=temp?temp:map_image;
redraw_mapimage = true;
}
// if (redraw_mapimage)
{
// draw map to screen, thus erasing all text
//SDL_BlitSurface(map_image, NULL, screen, NULL);
blit_surface(0, 0, map_image);
// update_rect(screen_rect);
// redraw the dialog
f.draw_background();
f.draw_border();
// cache the dialog background (alpha blending + blurred map)
//SDL_BlitSurface(screen, &text_rect, text_surf, NULL);
redraw_mapimage = false;
}
/* else {
// redraw the saved part of the dialog where text scrolled
// thus erasing all text
SDL_Rect modified = {0,0, max_text_width, text_rect.h};
SDL_BlitSurface(text_surf, &modified, screen, &text_rect_blit);
//update_rect(text_rect);
}
*/
const int line_spacing = 5;
int y = text_rect.y - offset;
int line = startline;
int cur_line = 0;
max_text_width = 0;
{
// clip to keep text into the frame (thus the new code block)
clip_rect_setter set_clip_rect(/*screen,*/ text_rect);
do {
// draw the text (with ellipsis if needed)
// update the max_text_width for future cleaning
int w = font::draw_text(&video, text_rect, def_size, def_color,
text[line], text_rect.x, y).w;
max_text_width = std::max<int>(max_text_width, w);
// since the real drawing on screen is clipped,
// we do a dummy one to get the height of the not clipped line.
// (each time because special format characters may change it)
const int line_height = font::draw_text(NULL, text_rect, def_size, def_color,
text[line], 0,0).h;
if(is_new_line) {
is_new_line = false;
first_line_height = line_height + line_spacing;
}
line++;
if(size_t(line) > text.size()-1)
line = 0;
y += line_height + line_spacing;
cur_line++;
} while(y < text_rect.y + text_rect.h);
}
// performs the actual scrolling
offset += scroll_speed;
if (offset>=first_line_height) {
offset -= first_line_height;
is_new_line = true;
startline++;
if(size_t(startline) == text.size()){
startline = 0;
image_count = -1;
}
}
// handle events
if (key[SDLK_UP] && scroll_speed < 20) {
++scroll_speed;
}
if (key[SDLK_DOWN] && scroll_speed > 0) {
--scroll_speed;
}
events::pump();
events::raise_process_event();
events::raise_draw_event();
// flip screen and wait, so the text does not scroll too fast
disp.flip();
disp.delay(20);
} while(!close.pressed() && (last_escape || !key[SDLK_ESCAPE]));
}