MAINT-8331 EEP UI control: XYVector

1 files changed, 306 insertions, 0 deletions

diff --git a/indra/llui/llxyvector.cpp b/indra/llui/llxyvector.cpp
new file mode 100644
index 0000000000..48f38b8a92
--- /dev/null
+++ b/indra/llui/llxyvector.cpp
@@ -0,0 +1,306 @@
+/**
+* @file llxyvector.cpp
+* @author Andrey Lihatskiy
+* @brief Implementation for LLXYVector
+*
+* $LicenseInfo:firstyear=2001&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2018, Linden Research, Inc.
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+*
+* This library 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
+* Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+
+// A control that allows to set two related vector magnitudes by manipulating a single vector on a plane. 
+
+#include "linden_common.h"
+
+#include "llxyvector.h"
+
+#include "llstring.h"
+#include "llrect.h"
+
+#include "lluictrlfactory.h"
+#include "llrender.h"
+
+// Globals
+static LLDefaultChildRegistry::Register<LLXYVector> register_xy_vector("xy_vector");
+
+
+const F32 CENTER_CIRCLE_RADIUS = 2;
+const S32 ARROW_ANGLE = 30;
+const S32 ARROW_LENGTH_LONG = 10;
+const S32 ARROW_LENGTH_SHORT = 6;
+
+LLXYVector::Params::Params()
+  : x_entry("x_entry"),
+    y_entry("y_entry"),
+    touch_area("touch_area"),
+    border("border"),
+    edit_bar_height("edit_bar_height", 18),
+    padding("padding", 4),
+    min_val_x("min_val_x", -1.0f),
+    max_val_x("max_val_x", 1.0f),
+    increment_x("increment_x", 0.05f),
+    min_val_y("min_val_y", -1.0f),
+    max_val_y("max_val_y", 1.0f),
+    increment_y("increment_y", 0.05f),
+    label_width("label_width", 16),
+    arrow_color("arrow_color", LLColor4::white),
+    ghost_color("ghost_color"),
+    area_color("area_color", LLColor4::grey4),
+    grid_color("grid_color", LLColor4::grey % 0.25f)
+{
+}
+
+LLXYVector::LLXYVector(const LLXYVector::Params& p)
+  : LLUICtrl(p),
+    mArrowColor(p.arrow_color()),
+    mAreaColor(p.area_color),
+    mGridColor(p.grid_color),
+    mMinValueX(p.min_val_x),
+    mMaxValueX(p.max_val_x),
+    mIncrementX(p.increment_x),
+    mMinValueY(p.min_val_y),
+    mMaxValueY(p.max_val_y),
+    mIncrementY(p.increment_y)
+{
+    mGhostColor = p.ghost_color.isProvided() ? p.ghost_color() % 0.3f : p.arrow_color() % 0.3f;
+
+    LLRect border_rect = getLocalRect();
+    LLViewBorder::Params params = p.border;
+    params.rect(border_rect);
+    mBorder = LLUICtrlFactory::create<LLViewBorder>(params);
+    addChild(mBorder);
+
+    LLTextBox::Params x_label_params;
+    x_label_params.initial_value(p.x_entry.label());
+    x_label_params.rect = LLRect(p.padding,
+                                 border_rect.mTop - p.padding,
+                                 p.label_width,
+                                 border_rect.getHeight() - p.edit_bar_height);
+    mXLabel = LLUICtrlFactory::create<LLTextBox>(x_label_params);
+    addChild(mXLabel);
+    LLLineEditor::Params x_params = p.x_entry;
+    x_params.rect = LLRect(p.padding + p.label_width,
+                           border_rect.mTop - p.padding,
+                           border_rect.getCenterX(),
+                           border_rect.getHeight() - p.edit_bar_height);
+    x_params.commit_callback.function(boost::bind(&LLXYVector::onEditChange, this));
+    mXEntry = LLUICtrlFactory::create<LLLineEditor>(x_params);
+    mXEntry->setPrevalidateInput(LLTextValidate::validateFloat);
+    addChild(mXEntry);
+
+    LLTextBox::Params y_label_params;
+    y_label_params.initial_value(p.y_entry.label());
+    y_label_params.rect = LLRect(border_rect.getCenterX() + p.padding,
+                                 border_rect.mTop - p.padding,
+                                 border_rect.getCenterX() + p.label_width,
+                                 border_rect.getHeight() - p.edit_bar_height);
+    mYLabel = LLUICtrlFactory::create<LLTextBox>(y_label_params);
+    addChild(mYLabel);
+    LLLineEditor::Params y_params = p.y_entry;
+    y_params.rect = LLRect(border_rect.getCenterX() + p.padding + p.label_width,
+                           border_rect.getHeight() - p.padding,
+                           border_rect.getWidth() - p.padding,
+                           border_rect.getHeight() - p.edit_bar_height);
+    y_params.commit_callback.function(boost::bind(&LLXYVector::onEditChange, this));
+    mYEntry = LLUICtrlFactory::create<LLLineEditor>(y_params);
+    mYEntry->setPrevalidateInput(LLTextValidate::validateFloat);
+    addChild(mYEntry);
+
+    LLPanel::Params touch_area = p.touch_area;
+    touch_area.rect = LLRect(p.padding,
+                             border_rect.mTop - p.edit_bar_height - p.padding,
+                             border_rect.getWidth() - p.padding,
+                             p.padding);
+    mTouchArea = LLUICtrlFactory::create<LLPanel>(touch_area);
+    addChild(mTouchArea);
+}
+
+LLXYVector::~LLXYVector()
+{
+}
+
+BOOL LLXYVector::postBuild()
+{
+    return TRUE;
+}
+
+void drawArrow(S32 tailX, S32 tailY, S32 tipX, S32 tipY, LLColor4 color)
+{
+    gl_line_2d(tailX, tailY, tipX, tipY, color);
+
+    S32 dx = tipX - tailX;
+    S32 dy = tipY - tailY;
+
+    S32 arrowLength = (abs(dx) < ARROW_LENGTH_LONG && abs(dy) < ARROW_LENGTH_LONG) ? ARROW_LENGTH_SHORT : ARROW_LENGTH_LONG;
+   
+    F32 theta = std::atan2(dy, dx);
+
+    F32 rad = ARROW_ANGLE * std::atan(1) * 4 / 180;
+    F32 x = tipX - arrowLength * cos(theta + rad);
+    F32 y = tipY - arrowLength * sin(theta + rad);
+    F32 rad2 = -1 * ARROW_ANGLE * std::atan(1) * 4 / 180;
+    F32 x2 = tipX - arrowLength * cos(theta + rad2);
+    F32 y2 = tipY - arrowLength * sin(theta + rad2);
+    gl_triangle_2d(tipX, tipY, x, y, x2, y2, color, true);
+}
+
+void LLXYVector::draw()
+{
+    S32 centerX = mTouchArea->getRect().getCenterX();
+    S32 centerY = mTouchArea->getRect().getCenterY();
+
+    S32 pointX = centerX + (mValueX * mTouchArea->getRect().getWidth() / (2 * mMaxValueX));
+    S32 pointY = centerY + (mValueY * mTouchArea->getRect().getHeight() / (2 * mMaxValueY));
+
+    // fill
+    gl_rect_2d(mTouchArea->getRect(), mAreaColor, true);
+
+    // draw grid
+    gl_line_2d(centerX, mTouchArea->getRect().mTop, centerX, mTouchArea->getRect().mBottom, mGridColor);
+    gl_line_2d(mTouchArea->getRect().mLeft, centerY, mTouchArea->getRect().mRight, centerY, mGridColor);
+
+    // draw ghost
+    if (hasMouseCapture())
+    {
+        drawArrow(centerX, centerY, mGhostX, mGhostY, mGhostColor);
+    }
+    else
+    {
+        mGhostX = pointX;
+        mGhostY = pointY;
+    }
+
+    if (abs(mValueX) >= mIncrementX || abs(mValueY) >= mIncrementY)
+    {
+        // draw the vector arrow
+        drawArrow(centerX, centerY, pointX, pointY, mArrowColor);
+    }
+    else
+    {
+        // skip the arrow, set color for center circle
+        gGL.color4fv(mArrowColor.get().mV);
+    }
+
+    // draw center circle
+    gl_circle_2d(centerX, centerY, CENTER_CIRCLE_RADIUS, 12, true);
+
+    LLView::draw();
+}
+
+void LLXYVector::onEditChange()
+{
+    if (getEnabled())
+    {
+        setValueAndCommit(mXEntry->getValue().asReal(), mYEntry->getValue().asReal());
+    }
+}
+
+void LLXYVector::setValue(const LLSD& value)
+{
+    if (value.isArray())
+    {
+        setValue(value[0].asReal(), value[1].asReal());
+    }
+}
+
+void LLXYVector::setValue(F32 x, F32 y)
+{
+    x = llclamp(x, mMinValueX, mMaxValueX);
+    y = llclamp(y, mMinValueY, mMaxValueY);
+
+    // Round the values to nearest increments
+    x -= mMinValueX;
+    x += mIncrementX / 2.0001f;
+    x -= fmod(x, mIncrementX);
+    x += mMinValueX;
+
+    y -= mMinValueY;
+    y += mIncrementY / 2.0001f;
+    y -= fmod(y, mIncrementY);
+    y += mMinValueY;
+
+    mValueX = x;
+    mValueY = y;
+
+    update();
+}
+
+void LLXYVector::setValueAndCommit(F32 x, F32 y)
+{
+    if (mValueX != x || mValueY != y)
+    {
+        setValue(x, y);
+        onCommit();
+    }
+}
+
+LLSD LLXYVector::getValue() const
+{
+    LLSD value;
+    value.append(mValueX);
+    value.append(mValueY);
+    return value;
+}
+
+void LLXYVector::update()
+{
+    mXEntry->setValue(mValueX);
+    mYEntry->setValue(mValueY);
+}
+
+BOOL LLXYVector::handleHover(S32 x, S32 y, MASK mask)
+{
+    if (hasMouseCapture())
+    {
+        F32 valueX = F32(x - mTouchArea->getRect().getCenterX()) / mTouchArea->getRect().getWidth();
+        F32 valueY = F32(y - mTouchArea->getRect().getCenterY()) / mTouchArea->getRect().getHeight();
+
+        valueX *= 2 * mMaxValueX;
+        valueY *= 2 * mMaxValueY;
+
+        setValueAndCommit(valueX, valueY);
+    }
+
+    return TRUE;
+}
+
+BOOL LLXYVector::handleMouseUp(S32 x, S32 y, MASK mask)
+{
+    if (hasMouseCapture())
+    {
+        gFocusMgr.setMouseCapture(NULL);
+        make_ui_sound("UISndClickRelease");
+    }
+
+    return TRUE;
+}
+
+BOOL LLXYVector::handleMouseDown(S32 x, S32 y, MASK mask)
+{
+
+    if (mTouchArea->getRect().pointInRect(x, y))
+    {
+        gFocusMgr.setMouseCapture(this);
+        make_ui_sound("UISndClick");
+    }
+
+    return TRUE;
+}
+