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FormSpec : Add an auto vertical scrollbar to the textarea

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adelcoding1 2017-02-18 11:40:37 -08:00 • committed by Loic Blot
parent c830347a57
commit 9b8fa99fe3
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GPG key ID: EFAA458E8C153987
8 changed files with 1856 additions and 34 deletions
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110
src/intlGUIEditBox.cpp
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@ -61,10 +61,10 @@ namespace gui
//! constructor
intlGUIEditBox::intlGUIEditBox(const wchar_t* text, bool border,
IGUIEnvironment* environment, IGUIElement* parent, s32 id,
const core::rect<s32>& rectangle)
const core::rect<s32>& rectangle, bool writable, bool has_vscrollbar)
: IGUIEditBox(environment, parent, id, rectangle),
Border(border),
FrameRect(rectangle)
Border(border), FrameRect(rectangle),
m_scrollbar_width(0), m_vscrollbar(NULL), m_writable(writable)
{
#ifdef _DEBUG
setDebugName("intlintlGUIEditBox");
@ -93,9 +93,18 @@ intlGUIEditBox::intlGUIEditBox(const wchar_t* text, bool border,
FrameRect.LowerRightCorner.Y -= skin->getSize(EGDS_TEXT_DISTANCE_Y)+1;
}
if (skin && has_vscrollbar) {
m_scrollbar_width = skin->getSize(gui::EGDS_SCROLLBAR_SIZE);
if (m_scrollbar_width > 0) {
createVScrollBar();
}
}
breakText();
calculateScrollPos();
setWritable(writable);
}
@ -251,7 +260,7 @@ void intlGUIEditBox::setTextAlignment(EGUI_ALIGNMENT horizontal, EGUI_ALIGNMENT
//! called if an event happened.
bool intlGUIEditBox::OnEvent(const SEvent& event)
{
if (IsEnabled)
if (IsEnabled && m_writable)
{
switch(event.EventType)
@ -771,14 +780,18 @@ void intlGUIEditBox::draw()
if (Border)
{
skin->draw3DSunkenPane(this, skin->getColor(EGDC_WINDOW),
false, true, FrameRect, &AbsoluteClippingRect);
if (m_writable) {
skin->draw3DSunkenPane(this, skin->getColor(EGDC_WINDOW),
false, true, FrameRect, &AbsoluteClippingRect);
}
FrameRect.UpperLeftCorner.X += skin->getSize(EGDS_TEXT_DISTANCE_X)+1;
FrameRect.UpperLeftCorner.Y += skin->getSize(EGDS_TEXT_DISTANCE_Y)+1;
FrameRect.LowerRightCorner.X -= skin->getSize(EGDS_TEXT_DISTANCE_X)+1;
FrameRect.LowerRightCorner.Y -= skin->getSize(EGDS_TEXT_DISTANCE_Y)+1;
}
updateVScrollBar();
core::rect<s32> localClipRect = FrameRect;
localClipRect.clipAgainst(AbsoluteClippingRect);
@ -930,14 +943,16 @@ void intlGUIEditBox::draw()
charcursorpos = font->getDimension(s.c_str()).Width +
font->getKerningWidth(L"_", CursorPos-startPos > 0 ? &((*txtLine)[CursorPos-startPos-1]) : 0);
if (focus && (porting::getTimeMs() - BlinkStartTime) % 700 < 350)
{
setTextRect(cursorLine);
CurrentTextRect.UpperLeftCorner.X += charcursorpos;
if (m_writable) {
if (focus && (porting::getTimeMs() - BlinkStartTime) % 700 < 350)
{
setTextRect(cursorLine);
CurrentTextRect.UpperLeftCorner.X += charcursorpos;
font->draw(L"_", CurrentTextRect,
OverrideColorEnabled ? OverrideColor : skin->getColor(EGDC_BUTTON_TEXT),
false, true, &localClipRect);
font->draw(L"_", CurrentTextRect,
OverrideColorEnabled ? OverrideColor : skin->getColor(EGDC_BUTTON_TEXT),
false, true, &localClipRect);
}
}
}
@ -1418,6 +1433,9 @@ void intlGUIEditBox::calculateScrollPos()
VScrollPos = 0;
// todo: adjust scrollbar
if (m_vscrollbar) {
m_vscrollbar->setPos(VScrollPos);
}
}
//! set text markers
@ -1446,6 +1464,70 @@ void intlGUIEditBox::sendGuiEvent(EGUI_EVENT_TYPE type)
}
}
//! Create a vertical scrollbar
void intlGUIEditBox::createVScrollBar()
{
irr::core::rect<s32> scrollbarrect = FrameRect;
scrollbarrect.UpperLeftCorner.X += FrameRect.getWidth() - m_scrollbar_width;
m_vscrollbar = Environment->addScrollBar(false, scrollbarrect, getParent(), getID());
m_vscrollbar->setVisible(false);
m_vscrollbar->setSmallStep(1);
m_vscrollbar->setLargeStep(1);
}
//! Update the vertical scrollbar (visibilty & scroll position)
void intlGUIEditBox::updateVScrollBar()
{
if (!m_vscrollbar) {
return;
}
// OnScrollBarChanged(...)
if (m_vscrollbar->getPos() != VScrollPos) {
s32 deltaScrollY = m_vscrollbar->getPos() - VScrollPos;
CurrentTextRect.UpperLeftCorner.Y -= deltaScrollY;
CurrentTextRect.LowerRightCorner.Y -= deltaScrollY;
s32 scrollymax = getTextDimension().Height - FrameRect.getHeight();
if (scrollymax != m_vscrollbar->getMax()) {
// manage a newline or a deleted line
m_vscrollbar->setMax(scrollymax);
calculateScrollPos();
} else {
// manage a newline or a deleted line
VScrollPos = m_vscrollbar->getPos();
}
}
// check if a vertical scrollbar is needed ?
if (getTextDimension().Height > FrameRect.getHeight()) {
s32 scrollymax = getTextDimension().Height - FrameRect.getHeight();
if (scrollymax != m_vscrollbar->getMax()) {
m_vscrollbar->setMax(scrollymax);
}
if (!m_vscrollbar->isVisible() && MultiLine) {
AbsoluteRect.LowerRightCorner.X -= m_scrollbar_width;
m_vscrollbar->setVisible(true);
}
} else {
if (m_vscrollbar->isVisible()) {
AbsoluteRect.LowerRightCorner.X += m_scrollbar_width;
VScrollPos = 0;
m_vscrollbar->setPos(0);
m_vscrollbar->setMax(1);
m_vscrollbar->setVisible(false);
}
}
}
void intlGUIEditBox::setWritable(bool can_write_text)
{
m_writable = can_write_text;
}
//! Writes attributes of the element.
void intlGUIEditBox::serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options=0) const
{
@ -1464,6 +1546,7 @@ void intlGUIEditBox::serializeAttributes(io::IAttributes* out, io::SAttributeRea
out->addString("PasswordChar", ch.c_str());
out->addEnum ("HTextAlign", HAlign, GUIAlignmentNames);
out->addEnum ("VTextAlign", VAlign, GUIAlignmentNames);
out->addBool ("Writable", m_writable);
IGUIEditBox::serializeAttributes(out,options);
}
@ -1490,6 +1573,7 @@ void intlGUIEditBox::deserializeAttributes(io::IAttributes* in, io::SAttributeRe
setTextAlignment( (EGUI_ALIGNMENT) in->getAttributeAsEnumeration("HTextAlign", GUIAlignmentNames),
(EGUI_ALIGNMENT) in->getAttributeAsEnumeration("VTextAlign", GUIAlignmentNames));
setWritable(in->getAttributeAsBool("Writable"));
// setOverrideFont(in->getAttributeAsFont("OverrideFont"));
}