Visualizador de livros digitais¶
O Calibre inclui um visualizador de ebook incorporado que pode exibir os principais formatos de ebook. O visualizador de livros eletrónicos é altamente personalizável e possui vários recursos avançados.
Iniciar o visualizador de livros¶
You can view any of the books in your calibre library by selecting the book and pressing the View button. This will open up the book in the E-book viewer. You can also launch the E-book viewer by itself from the Start menu in Windows. On macOS, you can pin it to the dock and launch it from there. On Linux you can use its launcher in the desktop menus or run the command ebook-viewer.
Realce de texto¶
When you select text in the viewer, a little popup bar appears next to the selection. You can click the highlight button in that bar to create a highlight. You can add notes and change the color of the highlight. On a touch screen, long tap a word to select it and show the popup bar. Once in highlight mode you can change what text is selected, using touch screen friendly selection handles. Drag the handles to the top or bottom margins to scroll while selecting. You can also Shift+click or right click to extend the selection, particularly useful for multi-page selections.
You can use the Highlights button in the viewer controls to show a separate panel with a list of all highlights in the book, sorted by chapter.
You can browse all highlights in your entire calibre library by right clicking the View button and choosing Browse annotations.
Finally, if you use the calibre Content server’s in browser viewer, you can
have the viewer sync its annotations with the browser viewer by going to
Preferences → Miscellaneous in the viewer preferences and entering
the username of the Content server viewer to sync with. Use the special value
*
to sync with anonymous users.
Ler em voz alta¶
The viewer can read book text aloud. To use it you can simply click the Read aloud button in the viewer controls to start reading book text aloud. The word being currently read is highlighted. Speech is synthesized from the text using your operating system services for text-to-speech. You can change the voice being used by clicking the gear icon in the bar that is displayed while Read aloud is active.
Poderá também ler em voz alta passagens destacadas adicionando o botão Ler em voz alta à barra de seleção nas preferências de visualização em Comportamento de seleção.
Nota
O suporte texto-para-voz em navegadores é muito incompleto e contém muitos erros. A qualidade de funcionamento do Ler em voz alta no visualizador embebido no navegador depende da qualidade da implementação subjacente do texto-para-voz nesse navegador. Especificamente, realçar a palavra atual não funciona, e alterar a velocidade ou a voz implica que a leitura será reiniciada a partir do início.
Nota
No Linux, Ler em voz alta requer que o Speech Dispatcher esteja instalado e a funcionar.
Nota
No Windows, as vozes instaladas podem não estar todas visíveis no subsistema SAPI que é usado no texto-para-voz. Nesta ligação encontra instruções para tornar todas as vozes visíveis.
Searching the text¶
The viewer has very powerful search capabilities. Press the Ctrl+F key or access the viewer controls and click search. The simplest form of searching is to just search for whatever text you enter in the text box. The different forms of searching are chosen by the search mode box below the search input. Available modes are:
Contains - The simplest default mode. The text entered in the search box is searched for anywhere. All punctuation, accents and spaces are ignored. For example, the search:
Pena
will match all of the following:penal, pen a, pen.a and Peña
. If you select the Case sensitive box then accents, spaces and punctuation are no longer ignored.Whole words - Searches for whole words. So for example, the search
pena
will match the wordPeña
but not the wordPenal
. As with Contains searches above, accents and punctuation are ignored unless the Case sensitive box is checked.Nearby words - Searches for whole words that are near each other. So for example, the search
calibre cool
will match places where the wordscalibre
andcool
occur within sixty characters of each other. To change the number of characters add the new number to the end of the list of words. For instance,calibre cool awesome 120
will match places where the three words occur within 120 characters of each other. Note that punctuation and accents are not ignored for these searches.Regex - Interprets the search text as a regular expression. To learn more about using regular expressions, see the tutorial.
Following links using only the keyboard¶
The E-book viewer has a Hints mode that allows you to click links in the text without using the mouse. Press the Alt+F key and all links in the current screen will be highlighted with a number or letter over them. Press the letter on your keyboard to click the link. Pressing the Esc key will abort the Hints mode without selecting any link.
If more than thirty five links are on-screen then some of them will have multiple letters, in which case type the first and second, or the first and press Enter to activate. You can also use the Backspace key to undo a mistake in typing.
Personalizando a aparência e a sensação de sua experiência de leitura¶
You can change font sizes on the fly by using Font size in the viewer controls or Ctrl++ or Ctrl+- or holding the Ctrl key and using the mouse wheel.
Colors can be changed in the Colors section of the viewer preferences.
You can change the number of pages displayed on the screen as well as page margins in Page layout in the viewer preferences.
You can display custom headers and footers such as time left to read, current chapter title, book position, etc. via the Headers and footers section of the viewer preferences.
More advanced customization can be achieved by the Styles settings. Here you can specify a background image to display under the text and also a stylesheet you can set that will be applied to every book. Using it you can do things like change paragraph styles, text justification, etc. For examples of custom stylesheets used by calibre’s users, see the forums.
Pesquisa no dicionário¶
You can look up the meaning of words in the current book by double clicking or long tapping the word you want to lookup and then clicking the lookup button that looks like a library.
Copiando texto e imagens¶
You can select text and images by dragging the content with your mouse and then right clicking and selecting Copy to copy to the clipboard. The copied material can be pasted into another application as plain text and images.
Ampliar em imagens¶
You can zoom in to show an image at full size in a separate window by either double clicking or long tapping on it. You can also right click on it and choose View image.
Syncing with a paper edition of the current book¶
Some e-books, that have corresponding print editions, include metadata that marks the start of each paper page. For such e-books, the viewer allows you to jump to a particular paper edition page via the Go to button in the viewer controls. You can also optionally display the paper page corresponding to the current location in the book’s headers or footers via the viewer settings, by adding Pages from paper edition to either the header or the footer.
Atalhos do teclado¶
The viewer has extensive keyboard shortcuts, like the rest of calibre. They can be customised in the viewer Preferences. The default shortcuts are listed below:
Atalho de teclado |
Ação |
---|---|
Home, Ctrl+ArrowUp, Ctrl+ArrowLeft |
Scroll to the start of the current file in a multi file book |
Ctrl+Home |
Rolar até o início do livro |
Ctrl+End |
Rolar até o fim do livro |
End, Ctrl+ArrowDown, Ctrl+ArrowRight |
Scroll to the end of the current file in a multi file book |
ArrowUp |
Rolar para trás, suavemente no modo fluxo e por tela inteira no modo paginado |
ArrowDown |
Rolar para frente, suavemente no modo fluxo e por tela inteira no modo paginado |
ArrowLeft |
Rolar para a esquerda um pouco no modo fluxo e uma página no modo paginado |
ArrowRight |
Rolar para a direita um pouco no modo fluxo e uma página no modo paginado |
PageUp, Shift+Spacebar |
Rolar para trás por tela inteira |
PageDown, Spacebar |
Rolar para frente por tela inteira |
Ctrl+PageUp |
Rolar para a seção anterior |
Ctrl+PageDown |
Rolar para a seção seguinte |
Alt+ArrowLeft |
Voltar |
Alt+ArrowRight |
Avançar |
Ctrl+T |
Toggle Table of Contents |
Ctrl+S |
Ler em voz alta |
Alt+P |
Change settings quickly by creating and switching to profiles |
Alt+f |
Seguir links com o teclado |
Ctrl+C |
Copiar para a área de transferência |
Alt+C |
Copiar a localização atual para a área de transferência |
Ctrl+Shift+C |
Copiar a localização atual como um URL calibre:// para a área de transferência |
/, Ctrl+f, Cmd+f |
Iniciar busca |
F3, Enter |
Buscar seguinte |
Shift+F3, Shift+Enter |
Localizar anterior |
Ctrl+Plus, Meta+Plus |
Aumentar tamanho da fonte |
Ctrl+Minus, Meta+Minus |
Diminuir tamanho da fonte |
Ctrl+0 |
Restaurar o tamanho padrão de fonte |
Ctrl+] |
Aumentar o número de páginas por tela |
Ctrl+[ |
Diminuir o número de páginas por tela |
Ctrl+Alt+C |
Tornar o número de páginas por tela automático |
F11, Ctrl+Shift+F |
Alternar em tela cheia |
:kbd:Ctrl+M’ |
Alternar entre Modo Paginado e Modo Fluxo para o layout do texto |
Ctrl+W |
Ativar a barra de rolagem |
Ctrl+X |
Ativar o Modo de Referência |
Ctrl+B |
Mostrar/ocultar marcadores |
Ctrl+Alt+B |
Novo marcador |
Ctrl+N, Ctrl+E |
Exibir metadados do livro |
Ctrl+Alt+F5, Ctrl+Alt+R |
Recarregar livro |
Ctrl+Shift+ArrowRight |
Alterar a seleção atual em uma palavra para frente |
Ctrl+Shift+ArrowLeft |
Alterar a seleção atual em uma palavra para trás |
Shift+ArrowRight |
Alterar a seleção atual em um caractere para frente |
Shift+ArrowLeft |
Alterar a seleção atual em um caractere para trás |
Shift+ArrowDown |
Alterar a seleção atual em uma linha para frente |
Shift+Home |
Extender a seleção atual para o início da linha |
Shift+End |
Extender a seleção atual para o final da linha |
Ctrl+A |
Selecionar tudo |
Shift+ArrowUp |
Alterar a seleção atual em uma linha para trás |
Ctrl+Shift+ArrowDown |
Alterar a seleção atual em um parágrafo para frente |
Ctrl+Shift+ArrowUp |
Alterar a seleção atual em um parágrafo para trás |
Esc, MenuKey |
Mostrar os controles do Visualizador de e-books |
Ctrl+Comma, Ctrl+Esc, Meta+Esc, Meta+Comma |
Mostrar as preferências do Visualizador de e-books |
Ctrl+G, ;, : |
Ir para um local ou posição específica do livro |
Ctrl+Spacebar |
Ativar auto rolagem |
Alt+ArrowUp |
Auto rolar mais rápido |
Alt+ArrowDown |
Auto rolar mais devagar |
Ctrl+I |
Mostrar/ocultar o Inspetor |
Ctrl+L |
Mostrar/ocultar o painel de pesquisa de palavras |
Ctrl+Q (Cmd+Q on macOS) |
Encerrar |
Ctrl+P |
Imprimir livro para PDF |
Ctrl+F11 |
Ativar a barra de ferramentas |
Ctrl+H |
Ativar o painel de destaques |
Ctrl+D |
Editar este livro |
Non re-flowable content¶
Some books have very wide content that cannot be broken up at page boundaries.
For example tables or <pre>
tags. In such cases, you should switch the
viewer to flow mode by pressing Ctrl+M to read this content.
Alternately, you can also add the following CSS to the Styles section of the
viewer preferences to force the viewer to break up lines of text in
<pre>
tags:
code, pre { white-space: pre-wrap }
Designing your book to work well with the calibre E-book viewer¶
The calibre E-book viewer will set the is-calibre-viewer
class on the root
element. So you can write CSS rules that apply only for it. Additionally,
the viewer will set the following classes on the body
element:
body.calibre-viewer-dark-colors
Set when using a dark color scheme
body.calibre-viewer-light-colors
Set when using a light color scheme
body.calibre-viewer-paginated
Set when in paged mode
body.calibre-viewer-scrolling
Set when in flow (non-paginated) mode
body.calibre-footnote-container
Set when displaying a popup footnote
Finally, you can use the calibre color scheme colors via CSS variables.
The calibre E-book viewer defines the following variables:
--calibre-viewer-background-color
, --calibre-viewer-foreground-color
and optionally --calibre-viewer-link-color
in color themes that define
a link color.