blame: source/code/DialogBox.cpp

/*

===========================================================================

blockattack - Block Attack - Rise of the Blocks

Copyright (C) 2005-2016 Poul Sander

This program is free software: you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation, either version 2 of the License, or

(at your option) any later version.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program.  If not, see http://www.gnu.org/licenses/

Source information and contacts persons can be found at

http://www.blockattack.net

===========================================================================

*/

#include "DialogBox.hpp"

#include "global.hpp"

#include "common.h"

#include "ReadKeyboard.h"

#include "utf8.h"

#include "MenuSystem.h"

#include <unordered_map>

static void setButtonFont(const sago::SagoDataHolder* holder, sago::SagoTextField& field, const char* text) {

	field.SetHolder(holder);

	field.SetFont("freeserif");

	field.SetColor({255,255,255,255});

	field.SetFontSize(24);

	field.SetOutline(1, {0,0,0,255});

	field.SetText(text);

}

// Cache for DrawRect

static std::unordered_map<std::string, SDL_Texture*> draw_rect_cache;

static Uint64 draw_rect_cache_version=0;

static void draw_rect_cache_clear() {

	for (auto&& it: draw_rect_cache) {

		SDL_DestroyTexture(it.second);

	}

	draw_rect_cache.clear();

}

static void DrawRect(SDL_Renderer* target, int topx, int topy, int height, int width, const std::string& name) {

	const int size = 32;

	SDL_Rect dstrect = { topx, topy, width, height };

	std::string key_name = SPrintStringF("%s-%d-%d", name.c_str(),width, height);

	Uint64 new_version = globalData.spriteHolder->GetDataHolder().getVersion();

	if (draw_rect_cache_version != new_version) {

		draw_rect_cache_clear();

		draw_rect_cache_version = new_version;

	}

	if (draw_rect_cache.find(key_name) != draw_rect_cache.end()) {

		SDL_RenderCopy( target, draw_rect_cache[key_name], NULL, &dstrect );

		return;

	}

	SDL_Rect bounds_ns = {0, size, width, height-2*size};  //bounds for south

	SDL_Rect bounds_e = {0, 0, width-size, height};

	SDL_Texture* mTexture = SDL_CreateTexture( target, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_TARGET, width, height );

	draw_rect_cache[key_name] = mTexture;

	SDL_SetRenderTarget( target, mTexture );

	SDL_SetRenderDrawBlendMode(target, SDL_BLENDMODE_NONE);

	SDL_SetTextureBlendMode(mTexture, SDL_BLENDMODE_BLEND);

	SDL_SetRenderDrawColor(target, 0, 0, 0, 0);

	SDL_RenderFillRect(target, NULL);

	SDL_SetRenderDrawBlendMode(target, SDL_BLENDMODE_BLEND);

	const sago::SagoSprite& n = globalData.spriteHolder->GetSprite(name+"n");

	const sago::SagoSprite& s = globalData.spriteHolder->GetSprite(name+"s");

	const sago::SagoSprite& e = globalData.spriteHolder->GetSprite(name+"e");

	const sago::SagoSprite& w = globalData.spriteHolder->GetSprite(name+"w");

	const sago::SagoSprite& fill = globalData.spriteHolder->GetSprite(name+"fill");

	for (int i = 1; i < width/size; ++i) {

		n.DrawBounded(target, SDL_GetTicks(), i*size, 0, bounds_e);

		for (int j = 1; j < height/size; ++j) {

			w.DrawBounded(target, SDL_GetTicks(), 0, j*size, bounds_ns);

			fill.Draw(target, SDL_GetTicks(),i*size, j*size);

			e.DrawBounded(target, SDL_GetTicks(), width-size, j*size, bounds_ns);

		}

		s.DrawBounded(target, SDL_GetTicks(), i*size, height-size, bounds_e);

	}

	//Corners

	const sago::SagoSprite& nw = globalData.spriteHolder->GetSprite(name+"nw");

	const sago::SagoSprite& ne = globalData.spriteHolder->GetSprite(name+"ne");

	const sago::SagoSprite& se = globalData.spriteHolder->GetSprite(name+"se");

	const sago::SagoSprite& sw = globalData.spriteHolder->GetSprite(name+"sw");

	nw.Draw(target, SDL_GetTicks(), 0, 0);

	ne.Draw(target, SDL_GetTicks(), width-size, 0);

	se.Draw(target, SDL_GetTicks(), width-size, height-size);

	sw.Draw(target, SDL_GetTicks(), 0, height-size);

	SDL_SetRenderTarget( target, nullptr );

	SDL_RenderCopy( target, mTexture, NULL, &dstrect );

}

static void DrawRectWhite(SDL_Renderer* target, int topx, int topy, int height, int width) {

	std::string name = "ui_rect_white_";

	DrawRect(target, topx, topy, height, width, name);

}

void DrawRectYellow(SDL_Renderer* target, int topx, int topy, int height, int width) {

	std::string name = "ui_rect_yellow_";

	DrawRect(target, topx, topy, height, width, name);

}

bool OpenDialogbox(int x, int y, std::string& name, const std::string& header) {

	DialogBox d(x, y, name, header);

	RunGameState(d);

	if (d.IsUpdated()) {

		name = d.GetName();

		return true;

	}

	return false;

}

DialogBox::DialogBox(int x, int y, const std::string& name, const std::string& header) : header(header) {

	this->x = x;

	this->y = y;

	SetName(name);

	setButtonFont(&globalData.spriteHolder->GetDataHolder(), headerLabel, header.c_str());

	setButtonFont(&globalData.spriteHolder->GetDataHolder(), enterLabel, _("Enter to accept"));

	setButtonFont(&globalData.spriteHolder->GetDataHolder(), cancelLabel, _("Esc to cancel"));

	sagoTextSetBlueFont(textField);

	sagoTextSetBlueFont(cursorLabel);

	cursorLabel.SetText("|");

	for (auto position = virtualKeyboard.alphabet.begin(); position != virtualKeyboard.alphabet.end() ; utf8::advance(position, 1, virtualKeyboard.alphabet.end())) {

		auto endPosition = position;

		utf8::advance(endPosition, 1, virtualKeyboard.alphabet.end());

		std::string theChar(position, endPosition);

		virtualKeyboard.gamePadChars.push_back(theChar);

		virtualKeyboard.gamePadCharFields.emplace_back();

		sago::SagoTextField& tf = virtualKeyboard.gamePadCharFields.back();

		setButtonFont(&globalData.spriteHolder->GetDataHolder(), tf, theChar.c_str());

		if (globalData.verboseLevel) {

			std::cout << *position;

		}

	}

	if (globalData.verboseLevel) {

		std::cout << "\n";

	}

}

DialogBox::~DialogBox() {

}

bool DialogBox::IsActive() {

	return isActive;

}

static bool insideRect (int x, int y, int height, int width) {

	if (globalData.mousex < x) {

		return false;

	}

	if (globalData.mousex > x+width) {

		return false;

	}

	if (globalData.mousey < y) {

		return false;

	}

	if (globalData.mousey > y+height) {

		return false;

	}

	return true;

}

// For use with the mouse/gamepad keyboard

int keyboardRowLimit = 20;

void DialogBox::Draw(SDL_Renderer* target) {

	DrawBackground(globalData.screen);

	this->x = globalData.xsize/2-300;

	this->y = globalData.ysize/2-100;

	DrawRectYellow(target, x, y, 200, 600);

	headerLabel.Draw(target, x+300, y+20, sago::SagoTextField::Alignment::center);

	DrawRectYellow(target, x+25, y+128, 50, 250);

	enterLabel.Draw(target, x+150, y+140, sago::SagoTextField::Alignment::center);

	DrawRectYellow(target, x+325, y+128, 50, 250);

	cancelLabel.Draw(target, x+450, y+140, sago::SagoTextField::Alignment::center);

	DrawRectWhite(target, x+26, y+64, 54, 600-2*26);

	textField.SetText(rk->GetString());

	textField.Draw(target, x+40, y+76);

	std::string strHolder = rk->GetString();

	strHolder.erase((int)rk->CharsBeforeCursor());

	if (((SDL_GetTicks()/600)%2)==1) {

		int width = 0;

		textField.GetRenderedSize( strHolder.c_str(), &width);

		width -= 2;

		cursorLabel.Draw(target, x+40+width,y+76);

	}

	const sago::SagoSprite& marked = globalData.spriteHolder->GetSprite("i_level_check_box_marked");

	for (size_t i = 0; i<virtualKeyboard.gamePadCharFields.size(); ++i) {

		if (virtualKeyboard.selectedChar == static_cast<int>(i)) {

			marked.Draw(target, SDL_GetTicks(), globalData.xsize/2-400+(i%keyboardRowLimit)*40-5, globalData.ysize/2+150+(i/keyboardRowLimit)*40-5);

		}

		sago::SagoTextField& f = virtualKeyboard.gamePadCharFields.at(i);

		f.Draw(target, globalData.xsize/2-400+(i%keyboardRowLimit)*40, globalData.ysize/2+150+(i/keyboardRowLimit)*40);

	}

}

static bool isGamePadStartEvent(const SDL_Event& event) {

	if (event.type == SDL_CONTROLLERBUTTONDOWN) {

		if (event.cbutton.button == SDL_CONTROLLER_BUTTON_START ) {

			return true;

		}

	}

	return false;

}

static bool isGamePadLEvent(const SDL_Event& event) {

	if (event.type == SDL_CONTROLLERBUTTONDOWN) {

		if (event.cbutton.button == SDL_CONTROLLER_BUTTON_LEFTSHOULDER ) {

			return true;

		}

	}

	return false;

}

static bool isGamePadREvent(const SDL_Event& event) {

	if (event.type == SDL_CONTROLLERBUTTONDOWN) {

		if (event.cbutton.button == SDL_CONTROLLER_BUTTON_RIGHTSHOULDER ) {

			return true;

		}

	}

	return false;

}

void DialogBox::virtualKeyboardWriteSelectedChar(ReadKeyboard* rk, const std::string& insertChar) const {

	if (insertChar == virtualKeyboard.backspace) {

		rk->emulateBackspace();

	}

	else if (insertChar == virtualKeyboard.leftChar) {

		rk->cursorLeft();

	}

	else if (insertChar == virtualKeyboard.rightChar) {

		rk->cursorRight();

	}

	else {

		rk->putchar(insertChar);

	}

}

void DialogBox::ProcessInput(const SDL_Event& event, bool& processed) {

	if (event.type == SDL_TEXTINPUT) {

		if ((rk->ReadKey(event))&&(globalData.SoundEnabled)&&(!globalData.NoSound)) {

			Mix_PlayChannel(1, globalData.typingChunk.get(), 0);

		}

	}

	if ( event.type == SDL_KEYDOWN ) {

		if ( (event.key.keysym.sym == SDLK_RETURN)||(event.key.keysym.sym == SDLK_KP_ENTER) ) {

			name = rk->GetString();

			updated = true;

			isActive = false;

		}

		else if ( (event.key.keysym.sym == SDLK_ESCAPE) ) {

			isActive = false;

		}

		else {

			if ((rk->ReadKey(event))&&(globalData.SoundEnabled)&&(!globalData.NoSound)) {

				Mix_PlayChannel(1, globalData.typingChunk.get(), 0);

			}

		}

	}

	else {

		if (isGamePadStartEvent(event)) {

			name = rk->GetString();

			updated = true;

			isActive = false;

		}

		if (isEscapeEvent(event)) {

			isActive = false;

		}

		if (isConfirmEvent(event)) {

			const sago::SagoTextField& f = virtualKeyboard.gamePadCharFields.at(virtualKeyboard.selectedChar);

			const std::string& insertChar = f.GetText();

			virtualKeyboardWriteSelectedChar(rk.get(), insertChar);

		}

		if (event.type == SDL_CONTROLLERBUTTONDOWN) {

			if (event.cbutton.button == SDL_CONTROLLER_BUTTON_X ) {

				rk->emulateBackspace();

			}

			if (event.cbutton.button == SDL_CONTROLLER_BUTTON_Y ) {

				rk->putchar(" ");

			}

		}

		if (isGamePadLEvent(event)) {

			rk->cursorLeft();

		}

		if (isGamePadREvent(event)) {

			rk->cursorRight();

		}

		if (isRightEvent(event)) {

			if ( (virtualKeyboard.selectedChar+1)/keyboardRowLimit != virtualKeyboard.selectedChar/keyboardRowLimit ) {

				virtualKeyboard.selectedChar -= keyboardRowLimit;

			}

			++virtualKeyboard.selectedChar;

			if (virtualKeyboard.selectedChar >= static_cast<int>(virtualKeyboard.gamePadCharFields.size())) {

				virtualKeyboard.selectedChar -= virtualKeyboard.selectedChar%keyboardRowLimit;

			}

		}

		if (isLeftEvent(event)) {

			if ( (virtualKeyboard.selectedChar-1)/keyboardRowLimit != virtualKeyboard.selectedChar/keyboardRowLimit || virtualKeyboard.selectedChar == 0 ) {

				virtualKeyboard.selectedChar += keyboardRowLimit;

			}

			--virtualKeyboard.selectedChar;

		}

		if (isDownEvent(event)) {

			virtualKeyboard.selectedChar+= keyboardRowLimit;

		}

		if (isUpEvent(event)) {

			virtualKeyboard.selectedChar -= keyboardRowLimit;

		}

		if (virtualKeyboard.selectedChar < 0) {

			virtualKeyboard.selectedChar = 0;

		}

		if (virtualKeyboard.selectedChar >= static_cast<int>(virtualKeyboard.gamePadCharFields.size())) {

			virtualKeyboard.selectedChar = virtualKeyboard.gamePadCharFields.size()-1;

		}

	}

	processed = true;

	if ( !(SDL_GetMouseState(nullptr, nullptr)&SDL_BUTTON(1)) ) {

		bMouseUp=true;

	}

	if (SDL_GetMouseState(nullptr,nullptr)&SDL_BUTTON(1) && bMouseUp) {

		bMouseUp = false;

		if (insideRect(x+25, y+128, 50, 250)) {

			name = rk->GetString();

			updated = true;

			isActive = false;

		}

		if (insideRect(x+325, y+128, 50, 250)) {

			isActive = false;

		}

		for (size_t i = 0; i<virtualKeyboard.gamePadCharFields.size(); ++i) {

			sago::SagoTextField& f = virtualKeyboard.gamePadCharFields.at(i);

			auto topx = globalData.xsize/2-400+(i%keyboardRowLimit)*40-5;

			auto topy = globalData.ysize/2+150+(i/keyboardRowLimit)*40-5;

			if (insideRect(topx, topy, 30, 30)) {

				std::string insertChar = f.GetText();

				virtualKeyboardWriteSelectedChar(rk.get(), insertChar);

			}

		}

	}

	if (globalData.mousex != oldmousex || globalData.mousey != oldmousey) {

		for (size_t i = 0; i<virtualKeyboard.gamePadCharFields.size(); ++i) {

			auto topx = globalData.xsize/2-400+(i%keyboardRowLimit)*40-5;

			auto topy = globalData.ysize/2+150+(i/keyboardRowLimit)*40-5;

			if (insideRect(topx, topy, 30, 30)) {

				virtualKeyboard.selectedChar = i;

			}

		}

		oldmousex = globalData.mousex;

		oldmousey = globalData.mousey;

	}

}

void DialogBox::SetName(const std::string& name) {

	this->name = name;

	rk = std::make_shared<ReadKeyboard>(name.c_str());

}

std::string DialogBox::GetName() const {

	return name;

}

bool DialogBox::IsUpdated() const {

	return updated;

}