dialog class successfully refactored...
...into a basic_dialog and derived dialog class. Only the derived class supports a help button and links to the help-system stuff.
This commit is contained in:
Eric S. Raymond
parent
cf94d506bf
commit
ce92c14e05
3 changed files with 184 additions and 118 deletions
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@ -22,7 +22,6 @@
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#include "display.hpp"
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#include "events.hpp"
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#include "gettext.hpp"
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#include "help.hpp"
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#include "hotkeys.hpp"
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#include "image.hpp"
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#include "key.hpp"
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@ -54,25 +53,24 @@ namespace gui {
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// This is where the connections between styles and the panel images
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// in the data tree gets made.
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const struct style dialog::default_style("opaque", 0);
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const struct style dialog::message_style("translucent65", 3);
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const struct style dialog::titlescreen_style("translucent54", 0);
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const struct style dialog::hotkeys_style("menu2", 0);
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const struct style basic_dialog::default_style("opaque", 0);
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const struct style basic_dialog::message_style("translucent65", 3);
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const struct style basic_dialog::titlescreen_style("translucent54", 0);
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const struct style basic_dialog::hotkeys_style("menu2", 0);
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//static initialization
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const std::string dialog::no_help("");
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const int dialog::message_font_size = font::SIZE_PLUS;
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const int dialog::caption_font_size = font::SIZE_LARGE;
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const size_t dialog::left_padding = font::relative_size(10);
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const size_t dialog::right_padding = font::relative_size(10);
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const size_t dialog::image_h_pad = font::relative_size(/*image_ == NULL ? 0 :*/ 10);
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const size_t dialog::top_padding = font::relative_size(10);
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const size_t dialog::bottom_padding = font::relative_size(10);
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const int basic_dialog::message_font_size = font::SIZE_PLUS;
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const int basic_dialog::caption_font_size = font::SIZE_LARGE;
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const size_t basic_dialog::left_padding = font::relative_size(10);
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const size_t basic_dialog::right_padding = font::relative_size(10);
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const size_t basic_dialog::image_h_pad = font::relative_size(/*image_ == NULL ? 0 :*/ 10);
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const size_t basic_dialog::top_padding = font::relative_size(10);
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const size_t basic_dialog::bottom_padding = font::relative_size(10);
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#ifdef USE_TINY_GUI
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const int dialog::max_menu_width = 300;
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const int basic_dialog::max_menu_width = 300;
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#else
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const int dialog::max_menu_width = -1;
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const int basic_dialog::max_menu_width = -1;
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#endif
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}
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@ -81,33 +79,11 @@ namespace {
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std::vector<std::string> empty_string_vector;
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struct help_handler : public hotkey::command_executor
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{
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help_handler(display& disp, const std::string& topic) : disp_(disp), topic_(topic)
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{}
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private:
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void show_help()
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{
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if(topic_.empty() == false) {
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help::show_help(disp_,topic_);
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}
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}
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bool can_execute_command(hotkey::HOTKEY_COMMAND cmd, int/*index*/ =-1) const
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{
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return (topic_.empty() == false && cmd == hotkey::HOTKEY_HELP) || cmd == hotkey::HOTKEY_SCREENSHOT;
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}
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display& disp_;
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std::string topic_;
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};
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} //end anonymous namespace
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namespace gui {
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dialog::dimension_measurements::dimension_measurements() :x(-1), y(-1), interior(empty_rect),
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basic_dialog::dimension_measurements::dimension_measurements() :x(-1), y(-1), interior(empty_rect),
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message(empty_rect), textbox(empty_rect), menu_height(-1)
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{
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//note: this is not defined in the header file to C++ ODR (one-definition rule)
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@ -115,17 +91,15 @@ dialog::dimension_measurements::dimension_measurements() :x(-1), y(-1), interior
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//(unnamed namespace and/or const object defined at declaration time).
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}
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dialog::dialog(display &disp, const std::string& title, const std::string& message,
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const DIALOG_TYPE type, const struct style* dialog_style,
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const std::string& help_topic) : disp_(disp), image_(NULL),
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basic_dialog::basic_dialog(display &disp, const std::string& title, const std::string& message,
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const DIALOG_TYPE type, const struct style* dialog_style
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) : disp_(disp), image_(NULL),
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title_(title), style_(dialog_style), title_widget_(NULL), message_(NULL),
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type_(type), menu_(NULL),
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help_button_(disp, help_topic), text_widget_(NULL),
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type_(type), menu_(NULL), text_widget_(NULL),
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frame_(NULL), bg_restore_(NULL), result_(CONTINUE_DIALOG)
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{
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CVideo& screen = disp_.video();
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help_button_.set_parent(this);
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switch(type)
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{
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case MESSAGE:
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@ -161,7 +135,7 @@ dialog::dialog(display &disp, const std::string& title, const std::string& messa
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}
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dialog::~dialog()
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basic_dialog::~basic_dialog()
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{
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if(menu_ != empty_menu)
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{
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@ -184,7 +158,7 @@ dialog::~dialog()
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delete bg_restore_;
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}
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const bool dialog::option_checked(unsigned int option_index)
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const bool basic_dialog::option_checked(unsigned int option_index)
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{
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unsigned int i = 0;
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button_pool_iterator b;
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@ -198,7 +172,7 @@ const bool dialog::option_checked(unsigned int option_index)
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return false;
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}
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void dialog::add_button(dialog_button *const btn, BUTTON_LOCATION loc)
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void basic_dialog::add_button(dialog_button *const btn, BUTTON_LOCATION loc)
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{
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std::pair<dialog_button *, BUTTON_LOCATION> new_pair(btn,loc);
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button_pool_.push_back(new_pair);
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@ -219,20 +193,20 @@ void dialog::add_button(dialog_button *const btn, BUTTON_LOCATION loc)
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}
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}
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void dialog::add_button(dialog_button_info btn_info, BUTTON_LOCATION loc)
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void basic_dialog::add_button(dialog_button_info btn_info, BUTTON_LOCATION loc)
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{
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dialog_button *btn = new dialog_button(disp_.video(), btn_info.label, button::TYPE_PRESS, CONTINUE_DIALOG, btn_info.handler);
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add_button(btn, loc);
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}
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void dialog::add_option(const std::string& label, bool checked, BUTTON_LOCATION loc)
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void basic_dialog::add_option(const std::string& label, bool checked, BUTTON_LOCATION loc)
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{
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gui::dialog_button *btn = new dialog_button(disp_.video(), label, button::TYPE_CHECK);
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btn->set_check(checked);
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add_button(btn, loc);
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}
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void dialog::set_textbox(const std::string& text_widget_label,
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void basic_dialog::set_textbox(const std::string& text_widget_label,
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const std::string& text_widget_text,
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const int text_widget_max_chars, const unsigned int text_box_width)
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{
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@ -242,13 +216,13 @@ void dialog::set_textbox(const std::string& text_widget_label,
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text_widget_->set_wrap(!editable_textbox);
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}
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void dialog::set_menu(const std::vector<std::string> &menu_items)
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void basic_dialog::set_menu(const std::vector<std::string> &menu_items)
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{
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set_menu(new gui::menu(disp_.video(), menu_items, (type_==MESSAGE),
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-1, dialog::max_menu_width, NULL, &menu::default_style, false));
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-1, basic_dialog::max_menu_width, NULL, &menu::default_style, false));
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}
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menu& dialog::get_menu()
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menu& basic_dialog::get_menu()
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{
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if(menu_ == NULL)
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{
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@ -261,13 +235,13 @@ menu& dialog::get_menu()
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return *menu_;
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}
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int dialog::show(int xloc, int yloc)
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int basic_dialog::show(int xloc, int yloc)
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{
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layout(xloc, yloc);
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return show();
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}
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int dialog::show()
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int basic_dialog::show()
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{
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if(disp_.video().update_locked()) {
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ERR_DP << "display locked ignoring dialog '" << title_ << "' '" << message_->get_text() << "'\n";
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@ -282,9 +256,6 @@ int dialog::show()
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const dialog_manager manager;
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const events::resize_lock prevent_resizing;
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help_handler helper(disp_,help_button_.topic());
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hotkey::basic_handler help_dispatcher(&disp_,&helper);
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//draw
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draw_frame();
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update_widget_positions();
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@ -306,7 +277,7 @@ int dialog::show()
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return result();
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}
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void dialog::draw_contents()
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void basic_dialog::draw_contents()
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{
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if(!preview_panes_.empty()) {
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for(pp_iterator i = preview_panes_.begin(); i != preview_panes_.end(); ++i) {
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@ -324,7 +295,7 @@ void dialog::draw_contents()
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disp_.invalidate_all();
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}
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dialog_frame& dialog::get_frame()
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dialog_frame& basic_dialog::get_frame(button *help_button)
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{
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if(frame_ == NULL) {
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CVideo& screen = disp_.video();
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@ -336,17 +307,17 @@ dialog_frame& dialog::get_frame()
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delete bg_restore_;
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bg_restore_ = new surface_restorer;
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frame_ = new dialog_frame(screen, title_, style_, &frame_buttons_, bg_restore_,
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help_button_.topic().empty() ? NULL : &help_button_);
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help_button);
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}
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return *frame_;
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}
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void dialog::draw_frame()
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void basic_dialog::draw_frame()
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{
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get_frame().draw();
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}
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void dialog::update_widget_positions()
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void basic_dialog::update_widget_positions()
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{
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if(!preview_panes_.empty()) {
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for(pp_iterator i = preview_panes_.begin(); i != preview_panes_.end(); ++i) {
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@ -390,19 +361,18 @@ void dialog::update_widget_positions()
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dialog_button *btn = *b;
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btn->join();
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}
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help_button_.join();
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message_->set_location(dim_.message);
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message_->join();
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}
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void dialog::refresh()
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void basic_dialog::refresh()
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{
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disp_.flip();
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disp_.delay(10);
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}
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dialog::dimension_measurements dialog::layout(int xloc, int yloc)
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basic_dialog::dimension_measurements basic_dialog::layout(int xloc, int yloc)
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{
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CVideo& screen = disp_.video();
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surface const scr = screen.getSurface();
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@ -655,13 +625,13 @@ dialog::dimension_measurements dialog::layout(int xloc, int yloc)
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return dim;
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}
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void dialog::set_layout(dimension_measurements &new_dim) {
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void basic_dialog::set_layout(dimension_measurements &new_dim) {
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get_frame().layout(new_dim.interior);
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dim_ = new_dim;
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}
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int dialog::process(dialog_process_info &info)
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int basic_dialog::process(dialog_process_info &info)
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{
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int mousex, mousey;
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@ -752,9 +722,6 @@ int dialog::process(dialog_process_info &info)
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return b->first->action(info);
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}
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}
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if(help_button_.pressed()) {
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return help_button_.action(info);
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}
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return CONTINUE_DIALOG;
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}
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@ -778,7 +745,7 @@ int dialog_button::action(dialog_process_info &info) {
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return simple_result_;
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}
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void dialog::action(dialog_process_info& info)
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void basic_dialog::action(dialog_process_info& info)
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{
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//default way of handling a "delete item" request
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if(result() == DELETE_ITEM) {
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@ -807,18 +774,7 @@ int standard_dialog_button::action(dialog_process_info &/*info*/) {
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}
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dialog::help_button::help_button(display& disp, const std::string &help_topic)
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: dialog_button(disp.video(), _("Help")), disp_(disp), topic_(help_topic)
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{}
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int dialog::help_button::action(dialog_process_info &info) {
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if(!topic_.empty()) {
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help::show_help(disp_,topic_);
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info.clear_buttons();
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}
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return CONTINUE_DIALOG;
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}
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void dialog::set_image(surface surf, const std::string &caption)
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void basic_dialog::set_image(surface surf, const std::string &caption)
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{
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label *label_ptr = NULL;
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if(!caption.empty()) {
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@ -832,15 +788,17 @@ void dialog_image::draw_contents()
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video().blit_surface(location().x, location().y, surf_);
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}
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// methods for message_dialog subclass begin here
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int message_dialog::show(msecs minimum_lifetime)
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{
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prevent_misclick_until_ = SDL_GetTicks() + minimum_lifetime;
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return dialog::show();
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return basic_dialog::show();
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}
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void message_dialog::action(gui::dialog_process_info &dp_info)
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{
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dialog::action(dp_info);
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basic_dialog::action(dp_info);
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if(done() && SDL_GetTicks() < prevent_misclick_until_ && result() != gui::ESCAPE_DIALOG) {
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//discard premature results
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set_result(gui::CONTINUE_DIALOG);
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@ -850,5 +808,96 @@ void message_dialog::action(gui::dialog_process_info &dp_info)
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message_dialog::~message_dialog()
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{
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}
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}//end namespace gui
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// methods for dialog subclass begin here
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#include "help.hpp"
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namespace {
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struct help_handler : public hotkey::command_executor
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{
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help_handler(display& disp, const std::string& topic) : disp_(disp), topic_(topic)
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{}
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private:
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void show_help()
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{
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if(topic_.empty() == false) {
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help::show_help(disp_,topic_);
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}
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}
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bool can_execute_command(hotkey::HOTKEY_COMMAND cmd, int/*index*/ =-1) const
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{
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return (topic_.empty() == false && cmd == hotkey::HOTKEY_HELP) || cmd == hotkey::HOTKEY_SCREENSHOT;
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}
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display& disp_;
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std::string topic_;
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};
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} //end anonymous namespace
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namespace gui {
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dialog::dialog(display &disp, const std::string& title, const std::string& message,
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const DIALOG_TYPE type, const struct style* dialog_style,
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const std::string& help_topic) :
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basic_dialog(disp, title, message, type, dialog_style),
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help_button_(disp, help_topic)
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{
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help_button_.set_parent(this);
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}
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void dialog::update_widget_positions()
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{
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basic_dialog::update_widget_positions();
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help_button_.join();
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}
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int dialog::process(dialog_process_info &info)
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{
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int res = basic_dialog::process(info);
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if(res == CONTINUE_DIALOG && help_button_.pressed()) {
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return help_button_.action(info);
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}
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return res;
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}
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int dialog::show()
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{
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help_handler helper(disp_,help_button_.topic());
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hotkey::basic_handler help_dispatcher(&disp_,&helper);
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return basic_dialog::show();
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}
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int dialog::show(int xloc, int yloc)
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{
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layout(xloc, yloc);
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return show();
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}
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dialog_frame& dialog::get_frame()
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{
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return basic_dialog::get_frame(help_button_.topic().empty() ? NULL : &help_button_);
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}
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dialog::help_button::help_button(display& disp, const std::string &help_topic)
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: dialog_button(disp.video(), _("Help")), disp_(disp), topic_(help_topic)
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{}
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int dialog::help_button::action(dialog_process_info &info) {
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if(!topic_.empty()) {
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help::show_help(disp_,topic_);
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info.clear_buttons();
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}
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return CONTINUE_DIALOG;
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}
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}//end namespace gui
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@ -114,7 +114,7 @@ public:
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: button(video,label,type,"",DEFAULT_SPACE,false), simple_result_(simple_result),
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parent_(NULL), handler_(handler)
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{}
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void set_parent(class dialog *parent) {
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void set_parent(class basic_dialog *parent) {
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parent_ = parent;
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}
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bool is_option() const {
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@ -122,10 +122,10 @@ public:
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}
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virtual int action(dialog_process_info &info);
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protected:
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class dialog *dialog() const { return parent_; }
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class basic_dialog *dialog() const { return parent_; }
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const int simple_result_;
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private:
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class dialog *parent_;
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class basic_dialog *parent_;
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dialog_button_action *handler_;
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};
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@ -140,7 +140,7 @@ private:
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};
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class dialog {
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class basic_dialog {
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public:
|
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enum BUTTON_LOCATION { BUTTON_STANDARD, BUTTON_EXTRA, BUTTON_EXTRA_LEFT, BUTTON_CHECKBOX, BUTTON_CHECKBOX_LEFT };
|
||||
struct dimension_measurements {
|
||||
|
|
@ -170,7 +170,6 @@ public:
|
|||
static const struct style message_style;
|
||||
static const struct style titlescreen_style;
|
||||
static const struct style hotkeys_style;
|
||||
static const std::string no_help;
|
||||
static const int message_font_size;
|
||||
static const int caption_font_size;
|
||||
static const int max_menu_width;
|
||||
|
|
@ -183,11 +182,10 @@ public:
|
|||
//Constructor & destructor
|
||||
//dialog - throws button::error() if standard buttons fail to initialize
|
||||
// throws utils::invalid_utf8_exception() if message is invalid
|
||||
dialog(display &disp, const std::string& title="", const std::string& message="",
|
||||
basic_dialog(display &disp, const std::string& title="", const std::string& message="",
|
||||
const DIALOG_TYPE type=MESSAGE,
|
||||
const struct style *dialog_style=&default_style,
|
||||
const std::string& help_topic=no_help);
|
||||
virtual ~dialog();
|
||||
const struct style *dialog_style=&default_style);
|
||||
virtual ~basic_dialog();
|
||||
|
||||
//Adding components - the dialog will manage the memory of these widgets,
|
||||
//therefore do not attempt to reference its widgets after destroying it
|
||||
|
|
@ -218,8 +216,8 @@ public:
|
|||
|
||||
//Launching the dialog
|
||||
//show - the return value of this method should be the same as result()
|
||||
int show(int xloc, int yloc);
|
||||
int show();
|
||||
virtual int show(int xloc, int yloc);
|
||||
virtual int show();
|
||||
|
||||
//Results
|
||||
int result() const { return result_; }
|
||||
|
|
@ -239,28 +237,20 @@ protected:
|
|||
void refresh();
|
||||
|
||||
label& get_message() const { return *message_; }
|
||||
dialog_frame& get_frame();
|
||||
virtual dialog_frame& get_frame(button *help_button=NULL);
|
||||
|
||||
display &disp_;
|
||||
|
||||
//process - execute a single dialog processing loop
|
||||
//and return the result
|
||||
virtual int process(dialog_process_info &info);
|
||||
virtual void update_widget_positions();
|
||||
|
||||
private:
|
||||
void draw_frame();
|
||||
void update_widget_positions();
|
||||
void draw_contents();
|
||||
|
||||
//process - execute a single dialog processing loop and return the result
|
||||
int process(dialog_process_info &info);
|
||||
|
||||
class help_button : public dialog_button {
|
||||
public:
|
||||
help_button(display& disp, const std::string &help_topic);
|
||||
int action(dialog_process_info &info);
|
||||
const std::string topic() const { return topic_; }
|
||||
private:
|
||||
display &disp_;
|
||||
const std::string topic_;
|
||||
};
|
||||
|
||||
//Members
|
||||
display &disp_;
|
||||
dialog_image *image_;
|
||||
const std::string title_;
|
||||
const struct style *style_;
|
||||
|
|
@ -272,7 +262,6 @@ private:
|
|||
std::vector<dialog_button*> standard_buttons_;
|
||||
std::vector<dialog_button*> extra_buttons_;
|
||||
std::vector<button*> frame_buttons_;
|
||||
help_button help_button_;
|
||||
dialog_textbox *text_widget_;
|
||||
dialog_frame *frame_;
|
||||
surface_restorer *bg_restore_;
|
||||
|
|
@ -283,11 +272,11 @@ private:
|
|||
typedef Uint32 msecs;
|
||||
const msecs three_blinks = 300; // 3 times the 0.1sec human reflex-arc time
|
||||
|
||||
class message_dialog : public gui::dialog
|
||||
class message_dialog : public gui::basic_dialog
|
||||
{
|
||||
public:
|
||||
message_dialog(display &disp, const std::string& title="", const std::string& message="", const gui::DIALOG_TYPE type=gui::MESSAGE)
|
||||
: dialog(disp, title, message, type, &message_style), prevent_misclick_until_(0)
|
||||
: basic_dialog(disp, title, message, type, &message_style), prevent_misclick_until_(0)
|
||||
{}
|
||||
~message_dialog();
|
||||
int show(msecs minimum_lifetime = three_blinks);
|
||||
|
|
@ -297,5 +286,33 @@ private:
|
|||
msecs prevent_misclick_until_;
|
||||
};
|
||||
|
||||
class dialog : public gui::basic_dialog
|
||||
{
|
||||
public:
|
||||
dialog(display &disp, const std::string& title="",
|
||||
const std::string& message="",
|
||||
const DIALOG_TYPE type=MESSAGE,
|
||||
const struct style *dialog_style=&default_style,
|
||||
const std::string& help_topic="");
|
||||
|
||||
class help_button : public dialog_button {
|
||||
public:
|
||||
help_button(display& disp, const std::string &help_topic);
|
||||
int action(dialog_process_info &info);
|
||||
const std::string topic() const { return topic_; }
|
||||
private:
|
||||
display &disp_;
|
||||
const std::string topic_;
|
||||
};
|
||||
|
||||
int process(dialog_process_info &info);
|
||||
void update_widget_positions();
|
||||
dialog_frame& get_frame();
|
||||
int show();
|
||||
int show(int xloc, int yloc);
|
||||
|
||||
help_button help_button_;
|
||||
};
|
||||
|
||||
} //end namespace gui
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -118,7 +118,7 @@ private:
|
|||
std::string id_;
|
||||
|
||||
friend class scrollpane;
|
||||
friend class dialog;
|
||||
friend class basic_dialog;
|
||||
};
|
||||
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue