status_t
ActivityView::SaveState(BMessage& state) const
{
status_t status = state.AddBool("show legend", fShowLegend);
if (status != B_OK)
return status;
status = state.AddInt64("refresh interval", fRefreshInterval);
if (status != B_OK)
return status;
status = state.AddData("history background color", B_RGB_COLOR_TYPE,
&fHistoryBackgroundColor, sizeof(rgb_color));
if (status != B_OK)
return status;
for (int32 i = 0; i < fSources.CountItems(); i++) {
DataSource* source = fSources.ItemAt(i);
if (!source->PerCPU() || source->CPU() == 0)
status = state.AddString("source", source->InternalName());
if (status != B_OK)
return status;
BString name = source->Name();
name << " color";
rgb_color color = source->Color();
state.AddData(name.String(), B_RGB_COLOR_TYPE, &color,
sizeof(rgb_color));
}
return B_OK;
}
void
ActivityView::Draw(BRect updateRect)
{
bool drawBackground = true;
if (Parent() && (Parent()->Flags() & B_DRAW_ON_CHILDREN) != 0)
drawBackground = false;
_DrawHistory(drawBackground);
if (!fShowLegend)
return;
// draw legend
BRect legendFrame = _LegendFrame();
if (LowUIColor() == B_NO_COLOR)
SetLowColor(fLegendBackgroundColor);
if (drawBackground) {
BRect backgroundFrame(legendFrame);
backgroundFrame.bottom += kDraggerSize;
FillRect(backgroundFrame, B_SOLID_LOW);
}
BAutolock _(fSourcesLock);
font_height fontHeight;
GetFontHeight(&fontHeight);
for (int32 i = 0; i < fSources.CountItems(); i++) {
DataSource* source = fSources.ItemAt(i);
DataHistory* values = fValues.ItemAt(i);
BRect frame = _LegendFrameAt(legendFrame, i);
// draw color box
BRect colorBox = _LegendColorFrameAt(legendFrame, i);
BRect rect = colorBox;
uint32 flags = BControlLook::B_BLEND_FRAME;
be_control_look->DrawTextControlBorder(this, rect,
rect, fLegendBackgroundColor, flags);
SetHighColor(source->Color());
FillRect(rect);
// show current value and label
float y = frame.top + ceilf(fontHeight.ascent);
int64 value = values->ValueAt(values->End());
BString text;
source->Print(text, value);
float width = StringWidth(text.String());
BString label = source->Label();
float possibleLabelWidth = frame.right - colorBox.right - 12 - width;
// TODO: TruncateString() is broken... remove + 5 when fixed!
if (ceilf(StringWidth(label.String()) + 5) > possibleLabelWidth)
label = source->ShortLabel();
TruncateString(&label, B_TRUNCATE_MIDDLE, possibleLabelWidth);
if (drawBackground)
SetHighColor(ui_color(B_PANEL_TEXT_COLOR));
if (be_control_look == NULL) {
DrawString(label.String(), BPoint(6 + colorBox.right, y));
DrawString(text.String(), BPoint(frame.right - width, y));
} else {
be_control_look->DrawLabel(this, label.String(),
Parent()->ViewColor(), 0, BPoint(6 + colorBox.right, y));
be_control_look->DrawLabel(this, text.String(),
Parent()->ViewColor(), 0, BPoint(frame.right - width, y));
}
}
}
void
ActivityView::_DrawHistory(bool drawBackground)
{
_UpdateOffscreenBitmap();
BView* view = this;
if (fOffscreen != NULL) {
fOffscreen->Lock();
view = _OffscreenView();
}
BRect frame = _HistoryFrame();
BRect outerFrame = frame.InsetByCopy(-2, -2);
// draw the outer frame
uint32 flags = 0;
if (!drawBackground)
flags |= BControlLook::B_BLEND_FRAME;
be_control_look->DrawTextControlBorder(this, outerFrame,
outerFrame, fLegendBackgroundColor, flags);
// convert to offscreen view if necessary
if (view != this)
frame.OffsetTo(B_ORIGIN);
view->SetLowColor(fHistoryBackgroundColor);
view->FillRect(frame, B_SOLID_LOW);
uint32 step = 2;
uint32 resolution = fDrawResolution;
if (fDrawResolution > 1) {
step = 1;
resolution--;
}
uint32 width = frame.IntegerWidth() - 10;
uint32 steps = width / step;
bigtime_t timeStep = RefreshInterval() * resolution;
bigtime_t now = system_time();
// Draw scale
// TODO: add second markers?
view->SetPenSize(1);
rgb_color scaleColor = view->LowColor();
uint32 average = (scaleColor.red + scaleColor.green + scaleColor.blue) / 3;
if (average < 96)
scaleColor = tint_color(scaleColor, B_LIGHTEN_2_TINT);
else
scaleColor = tint_color(scaleColor, B_DARKEN_2_TINT);
view->SetHighColor(scaleColor);
view->StrokeLine(BPoint(frame.left, frame.top + frame.Height() / 2),
BPoint(frame.right, frame.top + frame.Height() / 2));
// Draw values
view->SetPenSize(1.5);
BAutolock _(fSourcesLock);
for (uint32 i = fSources.CountItems(); i-- > 0;) {
ViewHistory* viewValues = fViewValues.ItemAt(i);
DataSource* source = fSources.ItemAt(i);
DataHistory* values = fValues.ItemAt(i);
viewValues->Update(values, steps, fDrawResolution, now, timeStep,
RefreshInterval());
uint32 x = viewValues->Start() * step;
BShape shape;
bool first = true;
for (uint32 i = viewValues->Start(); i < steps; x += step, i++) {
float y = _PositionForValue(source, values,
viewValues->ValueAt(i));
if (first) {
shape.MoveTo(BPoint(x, y));
first = false;
} else
shape.LineTo(BPoint(x, y));
}
view->SetHighColor(source->Color());
view->SetLineMode(B_BUTT_CAP, B_ROUND_JOIN);
view->MovePenTo(B_ORIGIN);
view->StrokeShape(&shape);
}
// TODO: add marks when an app started or quit
view->Sync();
if (fOffscreen != NULL) {
fOffscreen->Unlock();
DrawBitmap(fOffscreen, outerFrame.LeftTop());
}
}
void
ActivityView::_DrawHistory(bool drawBackground)
{
_UpdateOffscreenBitmap();
BView* view = this;
if (fOffscreen != NULL) {
fOffscreen->Lock();
view = _OffscreenView();
}
BRect frame = _HistoryFrame();
BRect outerFrame = frame.InsetByCopy(-2, -2);
// draw the outer frame
uint32 flags = 0;
if (!drawBackground)
flags |= BControlLook::B_BLEND_FRAME;
be_control_look->DrawTextControlBorder(this, outerFrame,
outerFrame, fLegendBackgroundColor, flags);
// convert to offscreen view if necessary
if (view != this)
frame.OffsetTo(B_ORIGIN);
view->SetLowColor(fHistoryBackgroundColor);
view->FillRect(frame, B_SOLID_LOW);
uint32 step = 2;
uint32 resolution = fDrawResolution;
if (fDrawResolution > 1) {
step = 1;
resolution--;
}
// We would get a negative number of steps which isn't a good idea.
if (frame.IntegerWidth() <= 10)
return;
uint32 width = frame.IntegerWidth() - 10;
uint32 steps = width / step;
bigtime_t timeStep = RefreshInterval() * resolution;
bigtime_t now = system_time();
// Draw scale
// TODO: add second markers?
view->SetPenSize(1);
rgb_color scaleColor = view->LowColor();
uint32 average = (scaleColor.red + scaleColor.green + scaleColor.blue) / 3;
if (average < 96)
scaleColor = tint_color(scaleColor, B_LIGHTEN_2_TINT);
else
scaleColor = tint_color(scaleColor, B_DARKEN_2_TINT);
view->SetHighColor(scaleColor);
view->StrokeLine(BPoint(frame.left, frame.top + frame.Height() / 2),
BPoint(frame.right, frame.top + frame.Height() / 2));
// Draw values
view->SetPenSize(1.5);
BAutolock _(fSourcesLock);
for (uint32 i = fSources.CountItems(); i-- > 0;) {
ViewHistory* viewValues = fViewValues.ItemAt(i);
DataSource* source = fSources.ItemAt(i);
DataHistory* values = fValues.ItemAt(i);
viewValues->Update(values, steps, fDrawResolution, now, timeStep,
RefreshInterval());
if (viewValues->Start() >= (int32)steps - 1)
continue;
uint32 x = viewValues->Start() * step;
bool first = true;
view->SetHighColor(source->Color());
view->SetLineMode(B_BUTT_CAP, B_ROUND_JOIN);
view->MovePenTo(B_ORIGIN);
try {
view->BeginLineArray(steps - viewValues->Start() - 1);
BPoint prev;
for (uint32 j = viewValues->Start(); j < steps; x += step, j++) {
float y = _PositionForValue(source, values,
viewValues->ValueAt(j));
if (first) {
first = false;
} else
view->AddLine(prev, BPoint(x, y), source->Color());
prev.Set(x, y);
}
} catch (std::bad_alloc) {
// Not enough memory to allocate the line array.
// TODO we could try to draw using the slower but less memory
// consuming solution using StrokeLine.
}
view->EndLineArray();
}
// TODO: add marks when an app started or quit
view->Sync();
if (fOffscreen != NULL) {
fOffscreen->Unlock();
DrawBitmap(fOffscreen, outerFrame.LeftTop());
}
}
void
ActivityView::Draw(BRect updateRect)
{
bool drawBackground = true;
if (Parent() && (Parent()->Flags() & B_DRAW_ON_CHILDREN) != 0)
drawBackground = false;
_DrawHistory(drawBackground);
if (!fShowLegend)
return;
// draw legend
BRect legendFrame = _LegendFrame();
SetLowColor(fLegendBackgroundColor);
if (drawBackground) {
BRect backgroundFrame(legendFrame);
backgroundFrame.bottom += kDraggerSize;
FillRect(backgroundFrame, B_SOLID_LOW);
}
BAutolock _(fSourcesLock);
font_height fontHeight;
GetFontHeight(&fontHeight);
for (int32 i = 0; i < fSources.CountItems(); i++) {
DataSource* source = fSources.ItemAt(i);
DataHistory* values = fValues.ItemAt(i);
BRect frame = _LegendFrameAt(legendFrame, i);
// draw color box
BRect colorBox = _LegendColorFrameAt(legendFrame, i);
BRect rect = colorBox;
uint32 flags = BControlLook::B_BLEND_FRAME;
be_control_look->DrawTextControlBorder(this, rect,
rect, fLegendBackgroundColor, flags);
SetHighColor(source->Color());
FillRect(rect);
// show current value and label
float y = frame.top + ceilf(fontHeight.ascent);
int64 value = values->ValueAt(values->End());
BString text;
source->Print(text, value);
float width = StringWidth(text.String());
BString label = source->Label();
float possibleLabelWidth = frame.right - colorBox.right - 12 - width;
// TODO: TruncateString() is broken... remove + 5 when fixed!
if (ceilf(StringWidth(label.String()) + 5) > possibleLabelWidth)
label = source->ShortLabel();
TruncateString(&label, B_TRUNCATE_MIDDLE, possibleLabelWidth);
if (drawBackground)
SetHighColor(ui_color(B_CONTROL_TEXT_COLOR));
else {
rgb_color c = Parent()->ViewColor();
rgb_color textColor = c.red + c.green * 1.5f + c.blue * 0.50f
>= 300 ? kBlack : kWhite;
int32 mask;
bool tmpOutline = false;
bool outline = fCachedOutline;
int8 indice = 0;
if (fCachedWorkspace != current_workspace()) {
while (fBackgroundInfo.FindInt32("be:bgndimginfoworkspaces",
indice, &mask) == B_OK
&& fBackgroundInfo.FindBool("be:bgndimginfoerasetext",
indice, &tmpOutline) == B_OK) {
if (((1 << current_workspace()) & mask) != 0) {
outline = tmpOutline;
fCachedWorkspace = current_workspace();
fCachedOutline = outline;
break;
}
indice++;
}
}
if (outline) {
SetDrawingMode(B_OP_ALPHA);
SetBlendingMode(B_CONSTANT_ALPHA, B_ALPHA_OVERLAY);
BFont font;
GetFont(&font);
if (textColor == kBlack) {
// Black text with white halo/glow
rgb_color glowColor = kWhite;
font.SetFalseBoldWidth(2.0);
SetFont(&font, B_FONT_FALSE_BOLD_WIDTH);
glowColor.alpha = 30;
SetHighColor(glowColor);
DrawString(label.String(), BPoint(6 + colorBox.right, y));
DrawString(text.String(), BPoint(frame.right - width, y));
font.SetFalseBoldWidth(1.0);
SetFont(&font, B_FONT_FALSE_BOLD_WIDTH);
glowColor.alpha = 65;
SetHighColor(glowColor);
DrawString(label.String(), BPoint(6 + colorBox.right, y));
DrawString(text.String(), BPoint(frame.right - width, y));
font.SetFalseBoldWidth(0.0);
SetFont(&font, B_FONT_FALSE_BOLD_WIDTH);
} else {
// white text with black outline
rgb_color outlineColor = kBlack;
font.SetFalseBoldWidth(1.0);
SetFont(&font, B_FONT_FALSE_BOLD_WIDTH);
outlineColor.alpha = 30;
SetHighColor(outlineColor);
DrawString(label.String(), BPoint(6 + colorBox.right, y));
DrawString(text.String(), BPoint(frame.right - width, y));
font.SetFalseBoldWidth(0.0);
SetFont(&font, B_FONT_FALSE_BOLD_WIDTH);
outlineColor.alpha = 200;
SetHighColor(outlineColor);
DrawString(label.String(), BPoint(6 + colorBox.right + 1,
y + 1));
DrawString(text.String(), BPoint(frame.right - width + 1,
y + 1));
}
}
SetDrawingMode(B_OP_OVER);
SetHighColor(textColor);
}
DrawString(label.String(), BPoint(6 + colorBox.right, y));
DrawString(text.String(), BPoint(frame.right - width, y));
}
}
