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stand the expansion button on the ground it buys

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The button leaves the header bar for the world, centered on the columns
the next purchase unlocks and panning with them until it leaves the view.
Those columns now take a lighter tint than the locked ground behind them,
so the boundary between the two says how far one purchase reaches.

Nothing in the code reported a scroll: the camera knew it had moved and
told only the hover. A ViewScrolledEvent says it now, which is what a
widget keeping a place in the world rather than on the screen needs. The
panels want none of it -- they are placed against the screen and stay put
as the world moves under them -- so the button is placed after their pass
and never joins the rectangles they step around.

Its face is two lines, "Expand" over the cost. That makes the cost a
display of its own, so it carries the building-block tooltip the way every
other item value does, on hover alone since the click buys the expansion.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Ne3mejABZoLWKLh8fgpM3x
This commit is contained in:
Malte Langkabel
2026-08-18 22:55:06 +02:00
parent 8292bc6134
commit abe8c8f448
16 changed files with 271 additions and 80 deletions
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16
src/ui/HeaderBar.h
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@@ -11,7 +11,6 @@
#include "BossWaveUpdatedEvent.h"
#include "BuildingBlocksChangedEvent.h"
#include "EventHandler.h"
#include "ExpansionCostChangedEvent.h"
#include "GameConfig.h"
#include "GameSpeedChangedEvent.h"
#include "ItemTooltipContext.h"
@@ -26,7 +25,6 @@ class Simulation;
class HeaderBar : public QWidget,
public CombinedEventHandler<TickAdvancedEvent,
BuildingBlocksChangedEvent,
ExpansionCostChangedEvent,
GameSpeedChangedEvent,
BossWaveUpdatedEvent,
ArtifactCountChangedEvent>
@@ -35,10 +33,10 @@ class HeaderBar : public QWidget,
public:
// The context carries the simulation the bar reads, the config, and the icon caches
// -- the item cache draws the building_block icon in the stock display and the expand
// button (REQ-UI-BLOCKS-ICON, REQ-UI-EXPAND-BUTTON), and the stock display explains
// that item with the cache's help (REQ-UI-ITEM-VALUE-TOOLTIP). Nothing in it is
// owned; all of it must outlive this widget.
// -- the item cache draws the building_block icon in the stock display
// (REQ-UI-BLOCKS-ICON), and the stock display explains that item with the cache's
// help (REQ-UI-ITEM-VALUE-TOOLTIP). Nothing in it is owned; all of it must outlive
// this widget.
explicit HeaderBar(const ItemTooltipContext& context, QWidget* parent = nullptr);
~HeaderBar() override;
@@ -48,15 +46,10 @@ private slots:
private:
void handleEvent(std::shared_ptr<const TickAdvancedEvent> event) override;
void handleEvent(std::shared_ptr<const BuildingBlocksChangedEvent> event) override;
void handleEvent(std::shared_ptr<const ExpansionCostChangedEvent> event) override;
void handleEvent(std::shared_ptr<const GameSpeedChangedEvent> event) override;
void handleEvent(std::shared_ptr<const BossWaveUpdatedEvent> event) override;
void handleEvent(std::shared_ptr<const ArtifactCountChangedEvent> event) override;
// Refreshes the Expand button caption and enabled state from the current
// expansion cost and building block stock (REQ-UI-EXPAND-BUTTON).
void updateExpandButton();
// Refreshes the building blocks stock display from the simulation:
// `Stock: <n>` with the building_block icon after it, or the
// `Stock: <n> Blocks` text fallback when no icon file exists
@@ -68,7 +61,6 @@ private:
QLabel* m_artifactsLabel;
QLabel* m_bossWaveLabel;
QLabel* m_nextBossLabel;
QPushButton* m_expandButton;
std::vector<QPushButton*> m_speedButtons;
// Not owned; all of it lives in MainWindow. The simulation it names is the single