Rewrote parts related to drawing the labels. The order of drawing happens as

this (seems to be what R5 BStatusBar does):
* combine the "trailing text" with the "trailing label" and truncate the
  resulting string on the left side according to the width of the entire
  control
* combine the "label" with the "text" and truncate that on the right side
  according to the space left by the right hand text.

-> No more overlaps (theoretically, in practise there are still overlaps
  because our BFont::TruncateString() does not respect the width in some
  situations.)

* Changed _SetTextData() accordingly, it is not used anymore for the
  label and trailing label, and could therefor be simplified a little.
* fixed _BarFrame() to not return fractional coords, which could sometimes
  leave a dirty line of pixels.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25244 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stephan Aßmus 2008-04-29 12:42:10 +00:00
parent 63cf342664
commit f466d35d9c
2 changed files with 111 additions and 96 deletions
headers/os/interface
src/kits/interface

@ -1,5 +1,5 @@
/*
* Copyright 2006, Haiku, Inc. All Rights Reserved.
* Copyright 2006-2008, Haiku, Inc. All Rights Reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef _STATUS_BAR_H
@ -84,8 +84,8 @@ class BStatusBar : public BView {
BStatusBar &operator=(const BStatusBar& other);
void _InitObject();
void _SetTextData(BString& text, float& width, const char* string, float pos,
bool rightAligned);
void _SetTextData(BString& text, const char* string,
const BString& combineWith, bool rightAligned);
BRect _BarFrame(const font_height* fontHeight = NULL) const;
float _BarPosition(const BRect& barFrame) const;
@ -96,14 +96,11 @@ class BStatusBar : public BView {
float fMax;
float fCurrent;
float fBarHeight;
float fLabelWidth;
float fTrailingLabelWidth;
float fTextWidth;
float fTrailingTextWidth;
float fTextDivider;
rgb_color fBarColor;
bool fCustomBarHeight;
uint32 _reserved[2];
uint32 _reserved[5];
};
#endif // _STATUS_BAR_H

@ -1,24 +1,26 @@
/*
* Copyright 2001-2006, Haiku.
* Copyright 2001-2008, Haiku. All Rights Reserved.
* Distributed under the terms of the MIT License.
*
* Authors:
* Marc Flerackers (mflerackers@androme.be)
* Axel Dörfler, axeld@pinc-software.de
* Stephan Aßmus <superstippi@gmx.de>
*/
/*! BStatusBar displays a "percentage-of-completion" gauge. */
#include <StatusBar.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <Message.h>
#include <Region.h>
#include <StatusBar.h>
#include <Layout.h>
#include <LayoutUtils.h>
#include <stdlib.h>
#include <string.h>
static const rgb_color kDefaultBarColor = {50, 150, 255, 255};
@ -80,14 +82,11 @@ BStatusBar::~BStatusBar()
void
BStatusBar::_InitObject()
{
fMax = 100.0f;
fCurrent = 0.0f;
fMax = 100.0;
fCurrent = 0.0;
fBarHeight = -1.0f;
fTextWidth = 0.0f;
fLabelWidth = 0.0f;
fTrailingTextWidth = 0.0f;
fTrailingLabelWidth = 0.0f;
fBarHeight = -1.0;
fTextDivider = Bounds().Width();
fBarColor = kDefaultBarColor;
fCustomBarHeight = false;
@ -119,9 +118,9 @@ BStatusBar::Archive(BMessage *archive, bool deep) const
if (err == B_OK && fBarColor != kDefaultBarColor)
err = archive->AddInt32("_bcolor", (const uint32 &)fBarColor);
if (err == B_OK && fCurrent != 0.0f)
if (err == B_OK && fCurrent != 0)
err = archive->AddFloat("_val", fCurrent);
if (err == B_OK && fMax != 100.0f )
if (err == B_OK && fMax != 100 )
err = archive->AddFloat("_max", fMax);
if (err == B_OK && fText.Length())
@ -151,10 +150,7 @@ BStatusBar::AttachedToWindow()
if (Parent())
SetLowColor(Parent()->ViewColor());
fLabelWidth = ceilf(StringWidth(fLabel.String()));
fTrailingLabelWidth = ceilf(StringWidth(fTrailingLabel.String()));
fTextWidth = ceilf(StringWidth(fText.String()));
fTrailingTextWidth = ceilf(StringWidth(fTrailingText.String()));
fTextDivider = Bounds().Width();
}
@ -207,7 +203,7 @@ BStatusBar::Draw(BRect updateRect)
font_height fontHeight;
GetFontHeight(&fontHeight);
BRect barFrame = _BarFrame(&fontHeight);
BRect outerFrame = barFrame.InsetByCopy(-2.0f, -2.0f);
BRect outerFrame = barFrame.InsetByCopy(-2, -2);
BRegion background(updateRect);
background.Exclude(outerFrame);
@ -216,29 +212,41 @@ BStatusBar::Draw(BRect updateRect)
// Draw labels/texts
BRect rect = outerFrame;
rect.top = 0.0f;
rect.bottom = outerFrame.top - 1.0f;
rect.top = 0;
rect.bottom = outerFrame.top - 1;
if (updateRect.Intersects(rect)) {
// update labels
SetHighColor(ui_color(B_CONTROL_TEXT_COLOR));
MovePenTo(0.0f, ceilf(fontHeight.ascent) + 1.0f);
BString leftText;
leftText << fLabel << fText;
if (fLabel.Length())
DrawString(fLabel.String());
if (fText.Length())
DrawString(fText.String());
BString rightText;
rightText << fTrailingText << fTrailingLabel;
if (fTrailingText.Length() || fTrailingLabel.Length()) {
MovePenTo(rect.right - fTrailingTextWidth - fTrailingLabelWidth,
ceilf(fontHeight.ascent) + 1.0f);
float baseLine = ceilf(fontHeight.ascent) + 1;
fTextDivider = rect.right;
if (fTrailingText.Length())
DrawString(fTrailingText.String());
BFont font;
GetFont(&font);
if (fTrailingLabel.Length())
DrawString(fTrailingLabel.String());
if (rightText.Length()) {
font.TruncateString(&rightText, B_TRUNCATE_BEGINNING, rect.Width());
fTextDivider -= StringWidth(rightText.String());
}
if (leftText.Length()) {
float width = max_c(0.0, fTextDivider - rect.left);
font.TruncateString(&leftText, B_TRUNCATE_END, width);
}
SetHighColor(ui_color(B_CONTROL_TEXT_COLOR));
if (leftText.Length())
DrawString(leftText.String(), BPoint(rect.left, baseLine));
if (rightText.Length())
DrawString(rightText.String(), BPoint(fTextDivider, baseLine));
}
// Draw bar
@ -254,10 +262,10 @@ BStatusBar::Draw(BRect updateRect)
StrokeLine(rect.RightTop());
SetHighColor(tint_color(ui_color(B_PANEL_BACKGROUND_COLOR), B_LIGHTEN_2_TINT));
StrokeLine(BPoint(rect.left + 1.0f, rect.bottom), rect.RightBottom());
StrokeLine(BPoint(rect.right, rect.top + 1.0f));
StrokeLine(BPoint(rect.left + 1, rect.bottom), rect.RightBottom());
StrokeLine(BPoint(rect.right, rect.top + 1));
rect.InsetBy(1.0f, 1.0f);
rect.InsetBy(1, 1);
// Second bevel
SetHighColor(tint_color(ui_color ( B_PANEL_BACKGROUND_COLOR ), B_DARKEN_4_TINT));
@ -265,8 +273,8 @@ BStatusBar::Draw(BRect updateRect)
StrokeLine(rect.RightTop());
SetHighColor(ui_color(B_PANEL_BACKGROUND_COLOR));
StrokeLine(BPoint(rect.left + 1.0f, rect.bottom), rect.RightBottom());
StrokeLine(BPoint(rect.right, rect.top + 1.0f));
StrokeLine(BPoint(rect.left + 1, rect.bottom), rect.RightBottom());
StrokeLine(BPoint(rect.right, rect.top + 1));
rect = barFrame;
rect.right = _BarPosition(barFrame);
@ -280,17 +288,17 @@ BStatusBar::Draw(BRect updateRect)
StrokeLine(rect.RightTop());
SetHighColor(tint_color(fBarColor, B_DARKEN_2_TINT));
StrokeLine(BPoint(rect.left + 1.0f, rect.bottom), rect.RightBottom());
StrokeLine(BPoint(rect.right, rect.top + 1.0f));
StrokeLine(BPoint(rect.left + 1, rect.bottom), rect.RightBottom());
StrokeLine(BPoint(rect.right, rect.top + 1));
// filling
SetHighColor(fBarColor);
FillRect(rect.InsetByCopy(1.0f, 1.0f));
FillRect(rect.InsetByCopy(1, 1));
}
if (rect.right < barFrame.right) {
// empty space
rect.left = rect.right + 1.0f;
rect.left = rect.right + 1;
rect.right = barFrame.right;
SetHighColor(tint_color(ui_color(B_PANEL_BACKGROUND_COLOR), B_LIGHTEN_MAX_TINT));
FillRect(rect);
@ -328,15 +336,14 @@ BStatusBar::SetBarHeight(float barHeight)
void
BStatusBar::SetText(const char* string)
{
_SetTextData(fText, fTextWidth, string, fLabelWidth, false);
_SetTextData(fText, string, fLabel, false);
}
void
BStatusBar::SetTrailingText(const char* string)
{
_SetTextData(fTrailingText, fTrailingTextWidth, string,
fTrailingLabelWidth, true);
_SetTextData(fTrailingText, string, fTrailingLabel, true);
}
@ -366,8 +373,8 @@ BStatusBar::SetTo(float value, const char* text, const char* trailingText)
if (value > fMax)
value = fMax;
else if (value < 0.0f)
value = 0.0f;
else if (value < 0)
value = 0;
if (value == fCurrent)
return;
@ -375,23 +382,19 @@ BStatusBar::SetTo(float value, const char* text, const char* trailingText)
float oldPosition = _BarPosition(barFrame);
fCurrent = value;
float newPosition = _BarPosition(barFrame);
// update only the part of the status bar with actual changes
if (oldPosition == newPosition)
return;
// update only the part of the status bar with actual changes
BRect update = barFrame;
update.InsetBy(-1, -1);
// TODO: this shouldn't be necessary, investigate - app_server bug?!
if (oldPosition < newPosition) {
update.left = max_c(oldPosition - 1, update.left);
update.right = newPosition;
update.left = floorf(max_c(oldPosition - 1, update.left));
update.right = ceilf(newPosition);
} else {
update.left = max_c(newPosition - 1, update.left);
update.right = oldPosition;
update.left = floorf(max_c(newPosition - 1, update.left));
update.right = ceilf(oldPosition);
}
Invalidate(update);
@ -404,15 +407,15 @@ BStatusBar::Reset(const char *label, const char *trailingLabel)
// Reset replaces the label and trailing label with copies of the
// strings passed as arguments. If either argument is NULL, the
// label or trailing label will be deleted and erased.
_SetTextData(fLabel, fLabelWidth, label, 0.0f, false);
_SetTextData(fTrailingLabel, fTrailingLabelWidth, trailingLabel, 0.0f, true);
fLabel = label ? label : "";
fTrailingLabel = trailingLabel ? trailingLabel : "";
// Reset deletes and erases any text or trailing text
_SetTextData(fText, fTextWidth, NULL, fLabelWidth, false);
_SetTextData(fTrailingText, fTrailingTextWidth, NULL, fTrailingLabelWidth, true);
fText = "";
fTrailingText = "";
fCurrent = 0.0f;
fMax = 100.0f;
fCurrent = 0;
fMax = 100;
Invalidate();
}
@ -442,15 +445,15 @@ BStatusBar::BarColor() const
float
BStatusBar::BarHeight() const
{
if (!fCustomBarHeight && fBarHeight == -1.0f) {
if (!fCustomBarHeight && fBarHeight == -1) {
// the default bar height is as height as the label
font_height fontHeight;
GetFontHeight(&fontHeight);
const_cast<BStatusBar *>(this)->fBarHeight = fontHeight.ascent
+ fontHeight.descent + 5.0f;
+ fontHeight.descent + 5;
}
return fBarHeight;
return ceilf(fBarHeight);
}
@ -556,14 +559,15 @@ BStatusBar::GetPreferredSize(float* _width, float* _height)
+ ceilf(StringWidth(fTrailingLabel.String()))
+ ceilf(StringWidth(fText.String()))
+ ceilf(StringWidth(fTrailingText.String()))
+ 5.0f;
+ 5;
}
if (_height) {
font_height fontHeight;
GetFontHeight(&fontHeight);
*_height = ceilf(fontHeight.ascent + fontHeight.descent) + 6.0f + BarHeight();
*_height = ceilf(fontHeight.ascent + fontHeight.descent) + 6
+ BarHeight();
}
}
@ -655,8 +659,8 @@ BStatusBar::operator=(const BStatusBar& other)
void
BStatusBar::_SetTextData(BString& text, float& width, const char* source,
float position, bool rightAligned)
BStatusBar::_SetTextData(BString& text, const char* source,
const BString& combineWith, bool rightAligned)
{
if (source == NULL)
source = "";
@ -665,27 +669,41 @@ BStatusBar::_SetTextData(BString& text, float& width, const char* source,
if (text == source)
return;
float oldWidth = width;
float oldWidth;
if (rightAligned)
oldWidth = Bounds().right - fTextDivider;
else
oldWidth = fTextDivider;
text = source;
width = ceilf(StringWidth(text.String()));
BString newString;
if (rightAligned)
newString << text << combineWith;
else
newString << combineWith << text;
float newWidth = ceilf(StringWidth(newString.String()));
// might still be smaller in Draw(), but we use it
// only for the invalidation rect here
// determine which part of the view needs an update
float invalidateWidth = max_c(newWidth, oldWidth);
// if a label changed, we also need to update the texts
float invalidateWidth = max_c(width, oldWidth);
if (&text == &fLabel)
invalidateWidth += fTextWidth;
if (&text == &fTrailingLabel)
invalidateWidth += fTrailingTextWidth;
float position = 0.0;
if (rightAligned)
position = Bounds().Width() - position - invalidateWidth;
position = Bounds().right - invalidateWidth;
font_height fontHeight;
GetFontHeight(&fontHeight);
Invalidate(BRect(position, 1.0f, position + invalidateWidth,
ceilf(fontHeight.ascent + fontHeight.descent)));
// Invalidate(BRect(position, 0, position + invalidateWidth,
// ceilf(fontHeight.ascent) + ceilf(fontHeight.descent)));
// TODO: redrawing the entire area takes care of the edge case
// where the left side string changes because of truncation and
// part of it needs to be redrawn as well.
Invalidate(BRect(0, 0, Bounds().right,
ceilf(fontHeight.ascent) + ceilf(fontHeight.descent)));
}
@ -699,19 +717,19 @@ BStatusBar::_BarFrame(const font_height* fontHeight) const
if (fontHeight == NULL) {
font_height height;
GetFontHeight(&height);
top = ceilf(height.ascent + height.descent) + 6.0f;
top = ceilf(height.ascent + height.descent) + 6;
} else
top = ceilf(fontHeight->ascent + fontHeight->descent) + 6.0f;
top = ceilf(fontHeight->ascent + fontHeight->descent) + 6;
return BRect(2.0f, top, Bounds().right - 2.0f, top + BarHeight() - 4.0f);
return BRect(2, top, Bounds().right - 2, top + BarHeight() - 4);
}
float
BStatusBar::_BarPosition(const BRect& barFrame) const
{
if (fCurrent == 0.0f)
return barFrame.left - 1.0f;
if (fCurrent == 0)
return barFrame.left - 1;
return roundf(barFrame.left + ceilf(fCurrent * barFrame.Width() / fMax));
}