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diff --git a/src/GUIObject.cpp b/src/GUIObject.cpp
index 1fa2cc5..1e3c6e5 100644
--- a/src/GUIObject.cpp
+++ b/src/GUIObject.cpp
@@ -1,1225 +1,1226 @@
/*
* Copyright (C) 2011-2012 Me and My Shadow
*
* This file is part of Me and My Shadow.
*
* Me and My Shadow 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 3 of the License, or
* (at your option) any later version.
*
* Me and My Shadow 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 Me and My Shadow. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Functions.h"
#include "GUIObject.h"
#include "ThemeManager.h"
#include "InputManager.h"
#include "GUISpinBox.h"
#include "GUIListBox.h"
#include "GUISlider.h"
#include <algorithm>
#include <iostream>
#include <list>
#include <SDL_ttf.h>
#include "Render.h"
using namespace std;
//Set the GUIObjectRoot to NULL.
GUIObject* GUIObjectRoot=NULL;
//Initialise the event queue.
list<GUIEvent> GUIEventQueue;
//A boolean variable used to skip next mouse up event for GUI (temporary workaround).
bool GUISkipNextMouseUpEvent = false;
void GUIObjectHandleEvents(ImageManager& imageManager, SDL_Renderer& renderer, bool kill){
//Check if we need to reset the skip variable.
if (event.type == SDL_MOUSEBUTTONDOWN) {
GUISkipNextMouseUpEvent = false;
}
//Check if we need to skip event.
if (event.type == SDL_MOUSEBUTTONUP && GUISkipNextMouseUpEvent) {
GUISkipNextMouseUpEvent = false;
} else {
//Make sure that GUIObjectRoot isn't null.
if (GUIObjectRoot)
GUIObjectRoot->handleEvents(renderer);
}
//Check for SDL_QUIT.
if(event.type==SDL_QUIT && kill){
//We get a quit event so enter the exit state.
setNextState(STATE_EXIT);
delete GUIObjectRoot;
GUIObjectRoot=NULL;
return;
}
//Keep calling events until there are none left.
while(!GUIEventQueue.empty()){
//Get one event and remove it from the queue.
GUIEvent e=GUIEventQueue.front();
GUIEventQueue.pop_front();
//If an eventCallback exist call it.
if(e.eventCallback){
e.eventCallback->GUIEventCallback_OnEvent(imageManager,renderer,e.name,e.obj,e.eventType);
}
}
//We empty the event queue just to be sure.
GUIEventQueue.clear();
}
GUIObject::GUIObject(ImageManager& imageManager, SDL_Renderer& renderer, int left, int top, int width, int height,
const char* caption, int value,
bool enabled, bool visible, int gravity) :
left(left), top(top), width(width), height(height),
gravity(gravity), value(value),
enabled(enabled), visible(visible),
eventCallback(NULL), state(0),
cachedEnabled(enabled), gravityX(0),
gravityLeft(0), gravityTop(0), gravityRight(0), gravityBottom(0)
{
//Make sure that caption isn't NULL before setting it.
if (caption){
GUIObject::caption = caption;
//And set the cached caption.
cachedCaption = caption;
}
if (width <= 0)
autoWidth = true;
else
autoWidth = false;
inDialog = false;
//Load the gui images.
bmGuiTex = imageManager.loadTexture(getDataPath() + "gfx/gui.png", renderer);
}
GUIObject::~GUIObject(){
//We need to delete every child we have.
for(unsigned int i=0;i<childControls.size();i++){
delete childControls[i];
}
//Deleted the childs now empty the childControls vector.
childControls.clear();
}
void GUIObject::addChild(GUIObject* obj){
//Add widget add a child
childControls.push_back(obj);
//Copy inDialog boolean from parent.
obj->inDialog = inDialog;
}
GUIObject* GUIObject::getChild(const std::string& name){
//Look for a child with the name.
for (unsigned int i = 0; i<childControls.size(); i++)
if (childControls[i]->name == name)
return childControls[i];
//Not found so return NULL.
return NULL;
}
bool GUIObject::handleEvents(SDL_Renderer& renderer,int x,int y,bool enabled,bool visible,bool processed){
//Boolean if the event is processed.
bool b=processed;
//The GUIObject is only enabled when its parent are enabled.
enabled=enabled && this->enabled;
//The GUIObject is only enabled when its parent are enabled.
visible=visible && this->visible;
//Get the absolute position.
x+=left-gravityX;
y+=top;
//Also let the children handle their events.
for(unsigned int i=0;i<childControls.size();i++){
bool b1=childControls[i]->handleEvents(renderer,x,y,enabled,visible,b);
//The event is processed when either our or the childs is true (or both).
b=b||b1;
}
return b;
}
void GUIObject::render(SDL_Renderer& renderer, int x,int y,bool draw){
//There's no need drawing the GUIObject when it's invisible.
if(!visible)
return;
//Get the absolute x and y location.
x+=left;
y+=top;
//We now need to draw all the children of the GUIObject.
for(unsigned int i=0;i<childControls.size();i++){
childControls[i]->render(renderer,x,y,draw);
}
}
void GUIObject::onResize() {
}
void GUIObject::refreshCache(bool enabled) {
//Check if the enabled state changed or the caption, if so we need to clear the (old) cache.
if(enabled!=cachedEnabled || caption.compare(cachedCaption)!=0 || width<=0){
//TODO: Only change alpha if only enabled changes.
//Free the cache.
cacheTex.reset(nullptr);
//And cache the new values.
cachedEnabled=enabled;
cachedCaption=caption;
//Finally resize the widget
if(autoWidth)
width=-1;
}
}
int GUIObject::getSelectedControl() {
for (int i = 0; i < (int)childControls.size(); i++) {
GUIObject *obj = childControls[i];
if (obj && obj->visible && obj->enabled && obj->state) {
- if (dynamic_cast<GUIButton*>(obj) || dynamic_cast<GUICheckBox*>(obj)
- || dynamic_cast<GUITextBox*>(obj) || dynamic_cast<GUISpinBox*>(obj)
+ if ((dynamic_cast<GUITextBox*>(obj) || dynamic_cast<GUISpinBox*>(obj)) && obj->state == 2) {
+ return i;
+ } else if (dynamic_cast<GUIButton*>(obj) || dynamic_cast<GUICheckBox*>(obj)
|| dynamic_cast<GUISingleLineListBox*>(obj)
|| dynamic_cast<GUISlider*>(obj)
)
{
return i;
}
}
}
return -1;
}
void GUIObject::setSelectedControl(int index) {
for (int i = 0; i < (int)childControls.size(); i++) {
GUIObject *obj = childControls[i];
if (obj && obj->visible && obj->enabled) {
if (dynamic_cast<GUIButton*>(obj) || dynamic_cast<GUICheckBox*>(obj)) {
//It's a button.
obj->state = (i == index) ? 1 : 0;
} else if (dynamic_cast<GUITextBox*>(obj)) {
//It's a text box.
if(i == index) {
obj->state = 2;
} else {
dynamic_cast<GUITextBox*>(obj)->blur();
}
} else if (dynamic_cast<GUISpinBox*>(obj)) {
//It's a spin box.
obj->state = (i == index) ? 2 : 0;
} else if (dynamic_cast<GUISingleLineListBox*>(obj)) {
//It's a single line list box.
obj->state = (i == index) ? 0x100 : 0;
} else if (dynamic_cast<GUISlider*>(obj)) {
//It's a slider.
obj->state = (i == index) ? 0x10000 : 0;
}
}
}
}
int GUIObject::selectNextControl(int direction, int selected) {
//Get the index of currently selected control.
if (selected == 0x80000000) {
selected = getSelectedControl();
}
//Find the next control.
for (int i = 0; i < (int)childControls.size(); i++) {
if (selected < 0) {
selected = 0;
} else {
selected += direction;
if (selected >= (int)childControls.size()) {
selected -= childControls.size();
} else if (selected < 0) {
selected += childControls.size();
}
}
GUIObject *obj = childControls[selected];
if (obj && obj->visible && obj->enabled) {
if (dynamic_cast<GUIButton*>(obj) || dynamic_cast<GUICheckBox*>(obj)
|| dynamic_cast<GUITextBox*>(obj) || dynamic_cast<GUISpinBox*>(obj)
|| dynamic_cast<GUISingleLineListBox*>(obj)
|| dynamic_cast<GUISlider*>(obj)
)
{
setSelectedControl(selected);
return selected;
}
}
}
return -1;
}
bool GUIObject::handleKeyboardNavigationEvents(ImageManager& imageManager, SDL_Renderer& renderer, int keyboardNavigationMode) {
if (keyboardNavigationMode == 0) return false;
//Check operation on focused control. These have higher priority.
if (isKeyboardOnly) {
//Check enter key.
if ((keyboardNavigationMode & 8) != 0 && inputMgr.isKeyDownEvent(INPUTMGR_SELECT)) {
int index = getSelectedControl();
if (index >= 0) {
GUIObject *obj = childControls[index];
if (dynamic_cast<GUIButton*>(obj)) {
//It's a button.
if (obj->eventCallback) {
obj->eventCallback->GUIEventCallback_OnEvent(imageManager, renderer, obj->name, obj, GUIEventClick);
}
return true;
}
if (dynamic_cast<GUICheckBox*>(obj)) {
//It's a check box.
obj->value = obj->value ? 0 : 1;
if (obj->eventCallback) {
obj->eventCallback->GUIEventCallback_OnEvent(imageManager, renderer, obj->name, obj, GUIEventClick);
}
return true;
}
}
}
//Check left/right key.
if ((keyboardNavigationMode & 16) != 0 && (inputMgr.isKeyDownEvent(INPUTMGR_LEFT) || inputMgr.isKeyDownEvent(INPUTMGR_RIGHT))) {
int index = getSelectedControl();
if (index >= 0) {
GUIObject *obj = childControls[index];
auto sllb = dynamic_cast<GUISingleLineListBox*>(obj);
if (sllb) {
//It's a single line list box.
int newValue = sllb->value + (inputMgr.isKeyDownEvent(INPUTMGR_RIGHT) ? 1 : -1);
if (newValue >= (int)sllb->item.size()) {
newValue -= sllb->item.size();
} else if (newValue < 0) {
newValue += sllb->item.size();
}
if (sllb->value != newValue) {
sllb->value = newValue;
if (obj->eventCallback) {
obj->eventCallback->GUIEventCallback_OnEvent(imageManager, renderer, obj->name, obj, GUIEventClick);
}
}
return true;
}
auto slider = dynamic_cast<GUISlider*>(obj);
if (slider) {
//It's a slider.
int newValue = slider->value + (inputMgr.isKeyDownEvent(INPUTMGR_RIGHT) ? slider->largeChange : -slider->largeChange);
newValue = clamp(newValue, slider->minValue, slider->maxValue);
if (slider->value != newValue) {
slider->value = newValue;
if (obj->eventCallback) {
obj->eventCallback->GUIEventCallback_OnEvent(imageManager, renderer, obj->name, obj, GUIEventChange);
}
}
return true;
}
}
}
}
//Check focus movement
int m = SDL_GetModState();
if (((keyboardNavigationMode & 1) != 0 && inputMgr.isKeyDownEvent(INPUTMGR_RIGHT))
|| ((keyboardNavigationMode & 2) != 0 && inputMgr.isKeyDownEvent(INPUTMGR_DOWN))
|| ((keyboardNavigationMode & 4) != 0 && inputMgr.isKeyDownEvent(INPUTMGR_TAB) && (m & KMOD_SHIFT) == 0)
)
{
isKeyboardOnly = true;
selectNextControl(1);
return true;
} else if (((keyboardNavigationMode & 1) != 0 && inputMgr.isKeyDownEvent(INPUTMGR_LEFT))
|| ((keyboardNavigationMode & 2) != 0 && inputMgr.isKeyDownEvent(INPUTMGR_UP))
|| ((keyboardNavigationMode & 4) != 0 && inputMgr.isKeyDownEvent(INPUTMGR_TAB) && (m & KMOD_SHIFT) != 0)
)
{
isKeyboardOnly = true;
selectNextControl(-1);
return true;
}
return false;
}
//////////////GUIButton///////////////////////////////////////////////////////////////////
bool GUIButton::handleEvents(SDL_Renderer& renderer,int x,int y,bool enabled,bool visible,bool processed){
//Boolean if the event is processed.
bool b=processed;
//The widget is only enabled when its parent are enabled.
enabled=enabled && this->enabled;
//The widget is only enabled when its parent are enabled.
visible=visible && this->visible;
//Get the absolute position.
x+=left-gravityX;
y+=top;
//We don't update button state under keyboard only mode.
if (!isKeyboardOnly) {
//Set state to 0.
state = 0;
//Only check for events when the object is both enabled and visible.
if (enabled && visible) {
//The mouse location (x=i, y=j) and the mouse button (k).
int i, j, k;
k = SDL_GetMouseState(&i, &j);
//Check if the mouse is inside the widget.
if (i >= x && i < x + width && j >= y && j < y + height) {
//We have hover so set state to one.
state = 1;
//Check for a mouse button press.
if (k&SDL_BUTTON(1))
state = 2;
//Check if there's a mouse press and the event hasn't been already processed.
if (event.type == SDL_MOUSEBUTTONUP && event.button.button == SDL_BUTTON_LEFT && !b) {
//If event callback is configured then add an event to the queue.
if (eventCallback) {
GUIEvent e = { eventCallback, name, this, GUIEventClick };
GUIEventQueue.push_back(e);
}
//Event has been processed.
b = true;
}
}
}
}
//Also let the children handle their events.
for(unsigned int i=0;i<childControls.size();i++){
bool b1=childControls[i]->handleEvents(renderer,x,y,enabled,visible,b);
//The event is processed when either our or the childs is true (or both).
b=b||b1;
}
return b;
}
void GUIButton::render(SDL_Renderer& renderer, int x,int y,bool draw){
//There's no need drawing the widget when it's invisible.
if(!visible)
return;
//Get the absolute x and y location.
x+=left;
y+=top;
refreshCache(enabled);
//Get the text and make sure it isn't empty.
const char* lp=caption.c_str();
if(lp!=NULL && lp[0]){
//Update cache if needed.
if(!cacheTex){
SDL_Color color = objThemes.getTextColor(inDialog);
if(!smallFont) {
cacheTex = textureFromText(renderer, *fontGUI, lp, color);
} else {
cacheTex = textureFromText(renderer, *fontGUISmall, lp, color);
}
//Make the widget transparent if it's disabled.
if(!enabled) {
SDL_SetTextureAlphaMod(cacheTex.get(), 128);
}
//Calculate proper size for the widget.
if(width<=0){
width=textureWidth(*cacheTex)+50;
if(gravity==GUIGravityCenter){
gravityX=int(width/2);
}else if(gravity==GUIGravityRight){
gravityX=width;
}else{
gravityX=0;
}
}
}
if(draw){
//Center the text both vertically as horizontally.
const SDL_Rect size = rectFromTexture(*cacheTex);
const int drawX=x-gravityX+(width-size.w)/2;
const int drawY=y+(height-size.h)/2-GUI_FONT_RAISE;
//Check if the arrows don't fall of.
if(size.w+32<=width){
if(state==1){
if(inDialog){
applyTexture(x-gravityX+(width-size.w)/2+4+size.w+5,y+2,*arrowLeft2,renderer);
applyTexture(x-gravityX+(width-size.w)/2-25,y+2,*arrowRight2,renderer);
}else{
applyTexture(x-gravityX+(width-size.w)/2+4+size.w+5,y+2,*arrowLeft1,renderer);
applyTexture(x-gravityX+(width-size.w)/2-25,y+2,*arrowRight1,renderer);
}
}else if(state==2){
if(inDialog){
applyTexture(x-gravityX+(width-size.w)/2+4+size.w,y+2,*arrowLeft2,renderer);
applyTexture(x-gravityX+(width-size.w)/2-20,y+2,*arrowRight2,renderer);
}else{
applyTexture(x-gravityX+(width-size.w)/2+4+size.w,y+2,*arrowLeft1,renderer);
applyTexture(x-gravityX+(width-size.w)/2-20,y+2,arrowRight1,renderer);
}
}
}
//Draw the text.
applyTexture(drawX, drawY, *cacheTex, renderer);
}
}
}
//////////////GUICheckBox///////////////////////////////////////////////////////////////////
bool GUICheckBox::handleEvents(SDL_Renderer&,int x,int y,bool enabled,bool visible,bool processed){
//Boolean if the event is processed.
bool b=processed;
//The widget is only enabled when its parent are enabled.
enabled=enabled && this->enabled;
//The widget is only enabled when its parent are enabled.
visible=visible && this->visible;
//Get the absolute position.
x+=left-gravityX;
y+=top;
//We don't update state under keyboard only mode.
if (!isKeyboardOnly) {
//Set state to 0.
state = 0;
//Only check for events when the object is both enabled and visible.
if (enabled&&visible){
//The mouse location (x=i, y=j) and the mouse button (k).
int i, j, k;
k = SDL_GetMouseState(&i, &j);
//Check if the mouse is inside the widget.
if (i >= x && i < x + width && j >= y && j < y + height){
//We have hover so set state to one.
state = 1;
//Check for a mouse button press.
if (k&SDL_BUTTON(1))
state = 2;
//Check if there's a mouse press and the event hasn't been already processed.
if (event.type == SDL_MOUSEBUTTONUP && event.button.button == SDL_BUTTON_LEFT && !b){
//It's a checkbox so toggle the value.
value = value ? 0 : 1;
//If event callback is configured then add an event to the queue.
if (eventCallback){
GUIEvent e = { eventCallback, name, this, GUIEventClick };
GUIEventQueue.push_back(e);
}
//Event has been processed.
b = true;
}
}
}
}
return b;
}
void GUICheckBox::render(SDL_Renderer& renderer, int x,int y,bool draw){
//There's no need drawing the widget when it's invisible.
if(!visible)
return;
//Get the absolute x and y location.
x+=left;
y+=top;
refreshCache(enabled);
//Draw the highlight in keyboard only mode.
if (isKeyboardOnly && state && draw) {
drawGUIBox(x, y, width, height, renderer, 0xFFFFFF40);
}
//Get the text.
const char* lp=caption.c_str();
//Make sure it isn't empty.
if(lp!=NULL && lp[0]){
//Update the cache if needed.
if(!cacheTex){
SDL_Color color = objThemes.getTextColor(inDialog);
cacheTex=textureFromText(renderer,*fontText,lp,color);
}
if(draw){
//Calculate the location, center it vertically.
const int drawX=x;
const int drawY=y+(height - textureHeight(*cacheTex))/2;
//Draw the text
applyTexture(drawX, drawY, *cacheTex, renderer);
}
}
if(draw){
//Draw the check (or not).
//value*16 determines where in the gui textures we draw from.
//if(value==1||value==2)
// r1.x=value*16;
const SDL_Rect srcRect={value*16,0,16,16};
const SDL_Rect dstRect={x+width-20, y+(height-16)/2, 16, 16};
//Get the right image depending on the state of the object.
SDL_RenderCopy(&renderer, bmGuiTex.get(), &srcRect, &dstRect);
}
}
//////////////GUILabel///////////////////////////////////////////////////////////////////
bool GUILabel::handleEvents(SDL_Renderer&,int ,int ,bool ,bool ,bool processed){
return processed;
}
void GUILabel::render(SDL_Renderer& renderer, int x,int y,bool draw){
//There's no need drawing the widget when it's invisible.
if(!visible)
return;
//Check if the enabled state changed or the caption, if so we need to clear the (old) cache.
refreshCache(enabled);
//Get the absolute x and y location.
x+=left;
y+=top;
//Rectangle the size of the widget.
SDL_Rect r;
r.x=x;
r.y=y;
r.w=width;
r.h=height;
//Get the caption and make sure it isn't empty.
const char* lp=caption.c_str();
if(lp!=NULL && lp[0]){
//Update cache if needed.
if(!cacheTex){
SDL_Color color = objThemes.getTextColor(inDialog);
cacheTex=textureFromText(renderer, *fontText, lp, color);
if(width<=0)
width=textureWidth(*cacheTex);
}
//Align the text properly and draw it.
if(draw){
const SDL_Rect size = rectFromTexture(*cacheTex);
if(gravity==GUIGravityCenter)
gravityX=(width-size.w)/2;
else if(gravity==GUIGravityRight)
gravityX=width-size.w;
else
gravityX=0;
r.y=y+(height - size.h)/2;
r.x+=gravityX;
applyTexture(r.x, r.y, cacheTex, renderer);
}
}
}
//////////////GUITextBox///////////////////////////////////////////////////////////////////
void GUITextBox::backspaceChar(){
//We need to remove a character so first make sure that there is text.
if(caption.length()>0){
if(highlightStart==highlightEnd&&highlightStart>0){
int advance = 0;
// this is proper UTF-8 support
int ch = utf8ReadBackward(caption.c_str(), highlightStart); // we obtain new highlightStart from this
if (ch > 0) TTF_GlyphMetrics(fontText, ch, NULL, NULL, NULL, NULL, &advance);
highlightEndX = highlightStartX = highlightEndX - advance;
caption.erase(highlightStart, highlightEnd - highlightStart);
highlightEnd = highlightStart;
} else if (highlightStart<highlightEnd){
caption.erase(highlightStart,highlightEnd-highlightStart);
highlightEnd=highlightStart;
highlightEndX=highlightStartX;
}else{
caption.erase(highlightEnd,highlightStart-highlightEnd);
highlightStart=highlightEnd;
highlightStartX=highlightEndX;
}
//If there is an event callback then call it.
if(eventCallback){
GUIEvent e={eventCallback,name,this,GUIEventChange};
GUIEventQueue.push_back(e);
}
}
}
void GUITextBox::deleteChar(){
//We need to remove a character so first make sure that there is text.
if(caption.length()>0){
if(highlightStart==highlightEnd){
// this is proper utf8 support
int i = highlightEnd;
utf8ReadForward(caption.c_str(), i);
if (i > highlightEnd) caption.erase(highlightEnd, i - highlightEnd);
highlightStart=highlightEnd;
highlightStartX=highlightEndX;
}else if(highlightStart<highlightEnd){
caption.erase(highlightStart,highlightEnd-highlightStart);
highlightEnd=highlightStart;
highlightEndX=highlightStartX;
}else{
caption.erase(highlightEnd,highlightStart-highlightEnd);
highlightStart=highlightEnd;
highlightStartX=highlightEndX;
}
//If there is an event callback then call it.
if(eventCallback){
GUIEvent e={eventCallback,name,this,GUIEventChange};
GUIEventQueue.push_back(e);
}
}
}
void GUITextBox::moveCarrotLeft(){
if(highlightEnd>0){
int advance = 0;
// this is proper UTF-8 support
int ch = utf8ReadBackward(caption.c_str(), highlightEnd); // we obtain new highlightEnd from this
if (ch > 0) TTF_GlyphMetrics(fontText, ch, NULL, NULL, NULL, NULL, &advance);
if(SDL_GetModState() & KMOD_SHIFT){
highlightEndX-=advance;
}else{
highlightStart=highlightEnd;
highlightStartX=highlightEndX=highlightEndX-advance;
}
}else{
if((SDL_GetModState() & KMOD_SHIFT)==0){
highlightStart=highlightEnd;
highlightStartX=highlightEndX;
}
}
tick=15;
}
void GUITextBox::moveCarrotRight(){
if(highlightEnd<caption.length()){
int advance = 0;
// this is proper UTF-8 support
int ch = utf8ReadForward(caption.c_str(), highlightEnd); // we obtain new highlightEnd from this
if (ch > 0) TTF_GlyphMetrics(fontText, ch, NULL, NULL, NULL, NULL, &advance);
if(SDL_GetModState() & KMOD_SHIFT){
highlightEndX+=advance;
}else{
highlightStartX=highlightEndX=highlightEndX+advance;
highlightStart=highlightEnd;
}
}else{
if((SDL_GetModState() & KMOD_SHIFT)==0){
highlightStart=highlightEnd;
highlightStartX=highlightEndX;
}
}
tick=15;
}
void GUITextBox::updateText(const std::string& text) {
caption = text;
updateSelection(0, 0);
}
void GUITextBox::updateSelection(int start, int end) {
start = clamp(start, 0, caption.size());
end = clamp(end, 0, caption.size());
highlightStart = start;
highlightStartX = 0;
highlightEnd = end;
highlightEndX = 0;
if (start > 0) {
TTF_SizeUTF8(fontText, caption.substr(0, start).c_str(), &highlightStartX, NULL);
}
if (end > 0) {
TTF_SizeUTF8(fontText, caption.substr(0, end).c_str(), &highlightEndX, NULL);
}
}
void GUITextBox::inputText(const char* s) {
int m = strlen(s);
if (m > 0){
if (highlightStart == highlightEnd) {
caption.insert((size_t)highlightStart, s);
highlightStart += m;
highlightEnd = highlightStart;
} else if (highlightStart < highlightEnd) {
caption.erase(highlightStart, highlightEnd - highlightStart);
caption.insert((size_t)highlightStart, s);
highlightStart += m;
highlightEnd = highlightStart;
highlightEndX = highlightStartX;
} else {
caption.erase(highlightEnd, highlightStart - highlightEnd);
caption.insert((size_t)highlightEnd, s);
highlightEnd += m;
highlightStart = highlightEnd;
highlightStartX = highlightEndX;
}
int advance = 0;
for (int i = 0;;) {
int a = 0;
int ch = utf8ReadForward(s, i);
if (ch <= 0) break;
TTF_GlyphMetrics(fontText, ch, NULL, NULL, NULL, NULL, &a);
advance += a;
}
highlightStartX = highlightEndX = highlightStartX + advance;
//If there is an event callback then call it.
if (eventCallback){
GUIEvent e = { eventCallback, name, this, GUIEventChange };
GUIEventQueue.push_back(e);
}
}
}
void GUITextBox::blur(){
state = 0;
highlightStart=highlightStartX=0;
highlightEnd=highlightEndX=0;
}
bool GUITextBox::handleEvents(SDL_Renderer&,int x,int y,bool enabled,bool visible,bool processed){
//Boolean if the event is processed.
bool b=processed;
//The widget is only enabled when its parent are enabled.
enabled=enabled && this->enabled;
//The widget is only enabled when its parent are enabled.
visible=visible && this->visible;
//Get the absolute position.
x+=left-gravityX;
y+=top;
//NOTE: We don't reset the state to have a "focus" effect.
//Only check for events when the object is both enabled and visible.
if(enabled&&visible){
//Check if there's a key press and the event hasn't been already processed.
if(state==2 && event.type==SDL_KEYDOWN && !b){
//Get the keycode.
SDL_Keycode key=event.key.keysym.sym;
if ((event.key.keysym.mod & KMOD_CTRL) == 0) {
//Check if the key is supported.
if (event.key.keysym.sym == SDLK_BACKSPACE){
backspaceChar();
} else if (event.key.keysym.sym == SDLK_DELETE){
deleteChar();
} else if (event.key.keysym.sym == SDLK_RIGHT){
moveCarrotRight();
} else if (event.key.keysym.sym == SDLK_LEFT){
moveCarrotLeft();
}
} else {
//Check hotkey.
if (event.key.keysym.sym == SDLK_a) {
//Select all.
highlightStart = 0;
highlightStartX = 0;
highlightEnd = caption.size();
highlightEndX = 0;
if (highlightEnd > 0) {
TTF_SizeUTF8(fontText, caption.c_str(), &highlightEndX, NULL);
}
} else if (event.key.keysym.sym == SDLK_x || event.key.keysym.sym == SDLK_c) {
//Cut or copy.
int start = highlightStart, end = highlightEnd;
if (start > end) std::swap(start, end);
if (start < end) {
SDL_SetClipboardText(caption.substr(start, end - start).c_str());
if (event.key.keysym.sym == SDLK_x) {
//Cut.
backspaceChar();
}
}
} else if (event.key.keysym.sym == SDLK_v) {
//Paste.
if (SDL_HasClipboardText()) {
char *s = SDL_GetClipboardText();
inputText(s);
SDL_free(s);
}
}
}
//The event has been processed.
b = true;
} else if (state == 2 && event.type == SDL_TEXTINPUT && !b){
inputText(event.text.text);
//The event has been processed.
b = true;
} else if (state == 2 && event.type == SDL_TEXTEDITING && !b){
// TODO: process SDL_TEXTEDITING event
}
//Only process mouse event when not in keyboard only mode
if (!isKeyboardOnly) {
//The mouse location (x=i, y=j) and the mouse button (k).
int i, j, k;
k = SDL_GetMouseState(&i, &j);
//Check if the mouse is inside the widget.
if (i >= x && i < x + width && j >= y && j < y + height){
//We can only increase our state. (nothing->hover->focus).
if (state != 2){
state = 1;
}
//Also update the cursor type.
currentCursor = CURSOR_CARROT;
//Move carrot and highlightning according to mouse input.
int clickX = i - x - 2;
int finalPos = 0;
int finalX = 0;
if (cacheTex&&!caption.empty()){
finalPos = caption.length();
for (int i = 0;;){
int advance = 0;
// this is proper UTF-8 support
int i0 = i;
int ch = utf8ReadForward(caption.c_str(), i);
if (ch <= 0) break;
TTF_GlyphMetrics(fontText, ch, NULL, NULL, NULL, NULL, &advance);
finalX += advance;
if (clickX < finalX - advance / 2){
finalPos = i0;
finalX -= advance;
break;
}
}
}
if (event.type == SDL_MOUSEBUTTONUP && state == 2){
state = 2;
highlightEnd = finalPos;
highlightEndX = finalX;
} else if (event.type == SDL_MOUSEBUTTONDOWN){
state = 2;
highlightStart = highlightEnd = finalPos;
highlightStartX = highlightEndX = finalX;
} else if (event.type == SDL_MOUSEMOTION && (k&SDL_BUTTON(1)) && state == 2){
state = 2;
highlightEnd = finalPos;
highlightEndX = finalX;
}
} else{
//The mouse is outside the TextBox.
//If we don't have focus but only hover we lose it.
if (state == 1){
state = 0;
}
//If it's a click event outside the textbox then we blur.
if (event.type == SDL_MOUSEBUTTONDOWN && event.button.button == SDL_BUTTON_LEFT){
blur();
}
}
}
}
return b;
}
void GUITextBox::render(SDL_Renderer& renderer, int x,int y,bool draw){
//There's no need drawing the widget when it's invisible.
if(!visible)
return;
//Get the absolute x and y location.
x+=left;
y+=top;
//Check if the enabled state changed or the caption, if so we need to clear the (old) cache.
refreshCache(enabled);
if(draw){
//Default background opacity
int clr=50;
//If hovering or focused make background more visible.
if(state==1)
clr=128;
else if (state==2)
clr=100;
//Draw the box.
Uint32 color=0xFFFFFF00|clr;
drawGUIBox(x,y,width,height,renderer,color);
}
//Rectangle used for drawing.
SDL_Rect r{0,0,0,0};
//Get the text and make sure it isn't empty.
const char* lp=caption.c_str();
if(lp!=NULL && lp[0]){
if(!cacheTex) {
//Draw the text.
cacheTex=textureFromText(renderer,*fontText,lp,objThemes.getTextColor(true));
}
if(draw){
//Only draw the carrot and highlight when focus.
if(state==2){
//Place the highlighted area.
r.x=x+4;
r.y=y+3;
r.h=height-6;
if(highlightStart<highlightEnd){
r.x+=highlightStartX;
r.w=highlightEndX-highlightStartX;
}else{
r.x+=highlightEndX;
r.w=highlightStartX-highlightEndX;
}
//Draw the area.
//SDL_FillRect(screen,&r,SDL_MapRGB(screen->format,128,128,128));
SDL_SetRenderDrawColor(&renderer, 128,128,128,255);
SDL_RenderFillRect(&renderer, &r);
//Ticking carrot.
if(tick<16){
//Show carrot: 15->0.
r.x=x+highlightEndX+2;
r.y=y+3;
r.h=height-6;
r.w=2;
//SDL_FillRect(screen,&r,SDL_MapRGB(screen->format,0,0,0));
SDL_SetRenderDrawColor(&renderer,0,0,0,255);
SDL_RenderFillRect(&renderer, &r);
//Reset: 32 or count down.
if(tick<=0)
tick=32;
else
tick--;
}else{
//Hide carrot: 32->16.
tick--;
}
}
//Calculate the location, center it vertically.
SDL_Rect dstRect=rectFromTexture(*cacheTex);
dstRect.x=x+4;
dstRect.y=y+(height-dstRect.h)/2;
dstRect.w=std::min(width-2, dstRect.w);
//Draw the text.
const SDL_Rect srcRect={0,0,width-2,25};
SDL_RenderCopy(&renderer, cacheTex.get(), &srcRect, &dstRect);
}
}else{
//Only draw the carrot when focus.
if(state==2&&draw){
//Ticking carrot.
if (tick<16){
//Show carrot: 15->0.
r.x = x + 4;
r.y = y + 4;
r.w = 2;
r.h = height - 8;
//SDL_FillRect(screen,&r,SDL_MapRGB(screen->format,0,0,0));
SDL_SetRenderDrawColor(&renderer, 0, 0, 0, 255);
SDL_RenderFillRect(&renderer, &r);
//Reset: 32 or count down.
if (tick <= 0)
tick = 32;
else
tick--;
} else{
//Hide carrot: 32->16.
tick--;
}
}
}
}
//////////////GUIFrame///////////////////////////////////////////////////////////////////
bool GUIFrame::handleEvents(SDL_Renderer& renderer,int x,int y,bool enabled,bool visible,bool processed){
//Boolean if the event is processed.
bool b=processed;
//The widget is only enabled when its parent are enabled.
enabled=enabled && this->enabled;
//The widget is only enabled when its parent are enabled.
visible=visible && this->visible;
//Get the absolute position.
x+=left;
y+=top;
//Also let the children handle their events.
for(unsigned int i=0;i<childControls.size();i++){
bool b1=childControls[i]->handleEvents(renderer,x,y,enabled,visible,b);
//The event is processed when either our or the childs is true (or both).
b=b||b1;
}
return b;
}
void GUIFrame::render(SDL_Renderer& renderer, int x,int y,bool draw){
//There's no need drawing this widget when it's invisible.
if(!visible)
return;
//Get the absolute x and y location.
x+=left;
y+=top;
//Check if the enabled state changed or the caption, if so we need to clear the (old) cache.
if(enabled!=cachedEnabled || caption.compare(cachedCaption)!=0 || width<=0){
//Free the cache.
cacheTex.reset(nullptr);
//And cache the new values.
cachedEnabled=enabled;
cachedCaption=caption;
//Finally resize the widget.
if(autoWidth)
width=-1;
}
//Draw fill and borders.
if(draw){
Uint32 color=0xDDDDDDFF;
drawGUIBox(x,y,width,height,renderer,color);
}
//Get the title text and make sure it isn't empty.
const char* lp=caption.c_str();
if(lp!=NULL && lp[0]){
//Update cache if needed.
if(!cacheTex) {
cacheTex = textureFromText(renderer, *fontGUI, lp, objThemes.getTextColor(true));
}
//Draw the text.
if(draw) {
applyTexture(x+(width-textureWidth(*cacheTex))/2, y+6-GUI_FONT_RAISE, *cacheTex, renderer);
}
}
//We now need to draw all the children.
for(unsigned int i=0;i<childControls.size();i++){
childControls[i]->render(renderer,x,y,draw);
}
}
//////////////GUIImage///////////////////////////////////////////////////////////////////
GUIImage::~GUIImage(){
}
bool GUIImage::handleEvents(SDL_Renderer&,int ,int ,bool ,bool ,bool processed){
return processed;
}
void GUIImage::fitToImage(){
const SDL_Rect imageSize = rectFromTexture(*image);
//Increase or decrease the width and height to fully show the image.
if(clip.w!=0) {
width=clip.w;
} else {
width=imageSize.w;
}
if(clip.h!=0) {
height=clip.h;
} else {
height=imageSize.h;
}
}
void GUIImage::render(SDL_Renderer& renderer, int x,int y,bool draw){
//There's no need drawing the widget when it's invisible.
//Also make sure the image isn't null.
if(!visible || !image)
return;
//Get the absolute x and y location.
x+=left;
y+=top;
//Create a clip rectangle.
SDL_Rect r=clip;
//The width and height are capped by the GUIImage itself.
if(r.w>width || r.w==0) {
r.w=width;
}
if(r.h>height || r.h==0) {
r.h=height;
}
const SDL_Rect dstRect={x,y,r.w,r.h};
SDL_RenderCopy(&renderer, image.get(), &r, &dstRect);
}

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